{"id":17990,"date":"2022-05-10T11:37:16","date_gmt":"2022-05-10T18:37:16","guid":{"rendered":"http:\/\/www.autodesk.com\/products\/eagle\/blog\/?p=1763"},"modified":"2022-06-07T10:38:34","modified_gmt":"2022-06-07T17:38:34","slug":"history-of-pcbs","status":"publish","type":"post","link":"https:\/\/www.autodesk.com\/products\/fusion-360\/blog\/history-of-pcbs\/","title":{"rendered":"The History of PCBs from 1870 to Today"},"content":{"rendered":"\n<p><em>Learn about the history of PCBs (printed circuit boards) with the introduction of the transistor, integrated circuit, BGA, and SMT.<\/em><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Like many other great inventions in history, the <a href=\"https:\/\/www.autodesk.com\/products\/fusion-360\/electronics-engineer\" target=\"_blank\" rel=\"noreferrer noopener\">printed circuit board (PCB)<\/a> that we know today was built on a foundation of advancements throughout history. In our little corner of the world, we can trace the history of PCBs back over 130 years, when the great industrial machine of the world was just kicking into motion. What we cover in this article is not a complete history but rather the sweeping moments that transformed PCBs into what they are today. <\/span><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"why-pcbs\">Why PCBs?<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">Over time, PCBs have evolved as a tool for optimizing electronics manufacturing<\/span>. What was once assembled easily by hand soon gave way to microscopic components that required the precision and efficiency of machinery. Take,<span style=\"font-weight: 400;\"> for example, the two circuit boards shown below. One is a<\/span> <span style=\"font-weight: 400;\">board for a calculator <\/span>from<span style=\"font-weight: 400;\"> the 1960s. The other is a typical high-density motherboard that you\u2019ll see in computers today.<\/span><\/p>\n\n\n<?xml encoding=\"utf-8\" ?><figure class=\"wp-block-table MuiTableContainer-root\"><table class=\" MuiTable-root DhigTable--verticalAlignment--top\"><tbody><tr class=\" MuiTableRow-root\"><td class=\" MuiTableCell-root\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1765\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/w362core.jpg\" alt=\"1968-calculator-pcb\" width=\"380\" height=\"221\"><\/td><td class=\" MuiTableCell-root\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1766\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/motherboard-1080x675.jpg\" alt=\"modern-motherboard\" width=\"381\" height=\"238\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><i><span style=\"font-weight: 400;\">PCB comparison between a 1968 calculator and today\u2019s modern motherboards. (<\/span><\/i><a href=\"http:\/\/www.oldcalculatormuseum.com\/wang362e.html\"><i><span style=\"font-weight: 400;\">image source<\/span><\/i><\/a><i><span style=\"font-weight: 400;\">)<\/span><\/i><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">We<\/span> probably have 30+ transistors in the calculator, but on a single chip on the motherboard, you\u2019ll find over a million transistors. The point is that the rate at which technology and PCB design are advancing is impressive. Everything on that calculator PCB can now fit into a single chip in<span style=\"font-weight: 400;\"> today\u2019s designs. This brings to focus several noticeable trends in the manufacturing of PCBs:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><span style=\"font-weight: 400;\">We&#8217;re packing more functionality into advanced devices like integrated circuits (ICs) and microprocessors. <\/span><\/li><li><span style=\"font-weight: 400;\">We&#8217;re shrinking passive components like resistors, capacitors, etc., to microscopic levels.<\/span><\/li><li><span style=\"font-weight: 400;\">All of this leads to an increased density of components and complexity on our boards.<\/span><\/li><\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">These advances are driven by the increasing speed and functionality of our products. We expect our devices to respond instantly, and even a few seconds&#8217; delay can send us into a frenzy. For functionality, think about video games. Back in the 80s, you were likely playing Pac-Man at the arcade. Now we\u2019re seeing photorealistic representations of reality. The progress is just insane. <\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1767\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/1459008617_igra1.jpg\" alt=\"photorealistic-video-game\" class=\"wp-image-1767\"\/><figcaption><em>Video game visuals are nearly photorealistic these days. (<a href=\"https:\/\/answers.unrealengine.com\/questions\/391152\/unreal-engine-4-vs-cryengine-5-or-cryengine-3.html\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">It\u2019s pretty clear to see that the evolution of PCBs is in direct response to our expectations from our devices. We demand faster, cheaper, more powerful products, and the only way to meet those needs is to miniaturize and make the manufacturing process more efficient. When did this whole craze for electronics and PCBs first begin? At the dawn of the Gilded Age.<\/span><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-gilded-age-1879-1900\">The Gilded Age (1879 &#8211; 1900)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">We\u2019re out of the American Civil War in the 60s, and now manufacturing is booming in the United States. We\u2019re making everything we can during this period, from food to clothing, furniture, and railroad tracks. The transportation industry was hammering away, and our greatest engineers were figuring out how to get someone from the east coast of the United States to the west coast in 5-7 days instead of 5-7 months.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1768\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/6_PromontorySummit.jpg\" alt=\"railroad-team\" class=\"wp-image-1768\"\/><figcaption><em>The railroad made it possible to travel from the east to the west coast in days, not months. (<a href=\"http:\/\/railroad.lindahall.org\/essays\/brief-history.html\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n\n<p>We were also bringing electricity into households during this time<span style=\"font-weight: 400;\">, first starting in cities, then moving into the suburbs and rural areas. Electricity was now an alternative to coal, wood, and oil. Think about living in New York in the dead of winter, trying to cook a meal or heat your home with dirty coal or stacks of firewood. Electricity changed all of this.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">One interesting note is that Standard Oil, which had a monopoly on the oil market, wasn\u2019t supplying oil for gasoline. Their market was oil burned for cooking, frying, and lighting. With electricity entering the picture, Standard Oil would need to define a new purpose for oil, which would arrive with the introduction of the automobile.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1769\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/Standard_Oil_Company_1878.jpg\" alt=\"standard-oil-company-shares\" class=\"wp-image-1769\"\/><figcaption><em>Shares of Standard Oil Company issues in May 1878, the beginning of the oil monopoly. (<a href=\"https:\/\/en.wikipedia.org\/wiki\/Standard_Oil\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n<h3 class=\"wp-block-heading\" id=\"major-discoveries-made\">Major Discoveries Made<\/h3>\n\n\n<p><span style=\"font-weight: 400;\">During the Gilded Age, we saw some significant discoveries in electromagnetics. We have the invention of the motor, which converts electrical energy into mechanical energy. We also see generators, which do the opposite by converting mechanical energy into electrical energy. <\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">This was also a period of genius inventors who still have an impact on our world of electronics today, including:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li style=\"font-weight: 400;\"><b>Thomas Edison<\/b><span style=\"font-weight: 400;\">&nbsp;invented the lightbulb in 1879, movies in 1889, and many other innovations. <\/span><\/li><li style=\"font-weight: 400;\"><b>Nikola Tesla<\/b><span style=\"font-weight: 400;\">&nbsp;invented the motor in 1888 and AC power in 1895.<\/span><\/li><li style=\"font-weight: 400;\"><b>Alexander Graham Bell<\/b><span style=\"font-weight: 400;\">&nbsp;invented the telephone in 1876. <\/span><\/li><li style=\"font-weight: 400;\"><b>George Eastman\u2019s Kodak<\/b><span style=\"font-weight: 400;\">&nbsp;invented the first consumer camera in 1884. <\/span><\/li><li style=\"font-weight: 400;\"><b>Herman Hollerith<\/b><span style=\"font-weight: 400;\">&nbsp;invented the tabulator in 1890 and would go on to found IBM. <\/span><\/li><\/ul>\n\n\n\n<p><span style=\"font-weight: 400;\">One of the most significant debates during this intense period of innovation was between AC and DC. Tesla\u2019s AC ended up winning out as an ideal method of transporting electricity over long distances. However, what\u2019s interesting to note is how we\u2019re still dealing with AC-DC conversion issues today.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1771\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/cd4d3f97e50a2fc23581fb60578b4701-tesla-s-nikola-tesla-1.jpg\" alt=\"tesla-vs-edison\" class=\"wp-image-1771\"\/><figcaption><em>AC might have won the fight, but DC still dominates electronics.<\/em><\/figcaption><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Look at any electronic device that you plug into the wall, and you\u2019ll need to convert the AC to DC. Or, if you look at the infrastructure require<\/span>ments <span style=\"font-weight: 400;\">for solar panels, they produce electricity in DC<\/span>. This <span style=\"font-weight: 400;\">has to be turned back into AC for mains and then back into DC to be used by our devices. You could almost say that the AC-DC debate never ended. A balance was just settled between two opposing ideas.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1772\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/gridtie.png\" alt=\"solar-panel-conversions\" class=\"wp-image-1772\"\/><figcaption><em>There\u2019s a lot of back and forth between AC and DC in solar panels.<\/em><\/figcaption><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Note that the beginning ideas for the PCB were not invented during the Gilded Age. However, without the manufacturing prowess of this time and the spreading influence of electricity, the PCB would never be what it is today.<\/span><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-progressive-era-1890-1920\">The Progressive Era (1890 &#8211; 1920)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">The Progressive Era was <\/span>a<span style=\"font-weight: 400;\"> time of social reform, with legislation like the Sherman Antitrust Act,<\/span> which broke up the monopoly of Standard Oil. This is also when we see the first patent for a PCB. In 1903, German Inventor Albert Hanson filed<span style=\"font-weight: 400;\"> a British patent for a device described as a flat, foil conductor on an insulating board with multiple layers. Sound familiar?<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1773\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/2017-10-11_18-08-27.png\" alt=\"albert-hanson-pcb-patent-drawing\" class=\"wp-image-1773\"\/><figcaption><em>A drawing depicting the first PCB patent secured by Albert Hanson<\/em>.<\/figcaption><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Hanson also described the concept of a through-hole application in his patent. Here he showed that you could punch a hole through two layers that had perpendicular wires to establish electrical connectivity.<\/span><\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"push-for-electronic-devices\">Push for electronic devices<\/h3>\n\n\n<p><span style=\"font-weight: 400;\">During this time, we started to see a major push for electric-powered devices in everyday households by Edison and other business leaders. The problem with this push was the complete lack of standardization. If you lived in New York or New Jersey and used Edison\u2019s electric inventions for lighting, heating, or cooking, what would happen if you used them in another city? They were unusable because each town had its own socket configurations.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">This problem was also worse because<\/span> Edison didn\u2019t just want to sell people a light bulb. He wanted to sell a service. You\u2019d get your electric service hooked up by Edison for a monthly fee; then,<span style=\"font-weight: 400;\"> you\u2019d buy the light bulbs, appliances, etc. Of course, none of these services were compatible with other competing methods.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">We have <a href=\"https:\/\/connecticuthistory.org\/first-us-detachable-electric-plug-today-in-history-november-8\/\" target=\"_blank\" rel=\"noreferrer noopener\">Harvey Hubbel<\/a> to thank for finally ending this mess. In 1915 he filed a patent for the standard wall outlet plug that is still in use today. However, now we don\u2019t have toasters or heating plates plugged into light bulb sockets. It\u2019s a massive win for standardization in the industry.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1774\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/BridgeportHubbellPlug-610x441.png\" alt=\"harvey-hubbell-patent-drawing\" class=\"wp-image-1774\"\/><figcaption><em>Thanks to Harvey Hubbel, we now have a standardized wall outlet for all electronics. (<a href=\"https:\/\/connecticuthistory.org\/first-us-detachable-electric-plug-today-in-history-november-8\/\" target=\"_blank\" rel=\"noreferrer noopener\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">One last thing to note is that the Progressive Era marked the first World War. This conflict was purely focused on mechanical devices and trench warfare. The PCB concept, and even basic electronics, still hadn&#8217;t come into use for military applications, but they soon would.<\/span><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-roaring-twenties-1920s\">The Roaring Twenties (1920s)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">With World War I coming to a close,<\/span> we\u2019re now in the Roaring Twenties and seeing a giant economic boom in the United States. This was the first time that more people lived in cities than farms. We also started to see chain stores and brands introduced <span style=\"font-weight: 400;\">throughout the United States. You might have had one or two family-owned shops in two different towns, but now major brands and stores have gone national.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">The greatest invention during this period was the automobile by <a href=\"http:\/\/www.history.com\/topics\/henry-ford\" target=\"_blank\" rel=\"noreferrer noopener\">Henry Ford<\/a> and its required infrastructure. This situation is similar to the 1990s, when<\/span> we had to build a significant infrastructure to handle the internet and our information age by making<span style=\"font-weight: 400;\"> switches, routers, and fiber optic cables. The automobile was no different.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1775\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/74364-004-9FB1CC39.jpg\" alt=\"henry-fords-quadricycle\" class=\"wp-image-1775\"\/><figcaption><em>Henry Ford\u2019s first car &#8211; the Quadricycle. (<a href=\"https:\/\/www.britannica.com\/technology\/automobile\/History-of-the-automobile\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n<h3 class=\"wp-block-heading\" id=\"the-invention-of-the-automobile\">The invention of the automobile<\/h3>\n\n\n<p><span style=\"font-weight: 400;\">Here we see roads that were once mud being paved. People needed gasoline to power their vehicles, so gas stations arose. You\u2019ve also got repair shops, accessories, etc. An entire way of life for many people was born out of the invention of the automobile, as it still is today.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">During this time, we saw the introduction of the modern appliances we still rely on today,<\/span> like washing machines, vacuums, and refrigerators. This was the first time that people could<span style=\"font-weight: 400;\"> shop at the store for perishable goods and store them for prolonged freshness.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">But where are our PCBs? We\u2019re still not seeing them used in any of the appliances or automobiles introduced during this time. However, in 1925 <a href=\"http:\/\/www.specialtymetals.com\/blog\/2014\/3\/3\/a-brief-history-of-printed-circuit-boards-and-the-gold-they-contain\" target=\"_blank\" rel=\"noreferrer noopener\">Charles Ducas<\/a> submitted a patent that<\/span> describes the process for adding conductive inks to an insulating material. This would later give birth to the printed wiring board (PWB). This patent was the first application to resemble a PCB but was only used as a flat heating coil. We still haven\u2019t gotten to any actual electrical connectivity between the <span style=\"font-weight: 400;\">board and components, but we\u2019re getting close.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1776\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/US1563731-2.png\" alt=\"charles-ducas-patent-drawing\" class=\"wp-image-1776\"\/><figcaption><em>The PCB evolved, this time being used as a heating coil by Charles Duca<\/em>s.<\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-great-depression-the-1930s\">The Great Depression (the 1930s)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">In 1929 the stock market plummeted,<\/span> and all of the great inventions and innovations of our time came tumbling down. Here we see a period of 25%+ unemployment, with 25,000 banks failing and a ton of hardship that ripples throughout the world. This was a miserable time for humanity <span style=\"font-weight: 400;\">and paved the way for the rise of Hitler, Mussolini, Stalin, and our future world conflict. PCBs might have laid quiet until now, but that was all about to change. <\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1777\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/2950340_orig.jpg\" alt=\"the-great-depression\" class=\"wp-image-1777\"\/><figcaption><em>The great depression affected everyone, from banks to the average worker.<\/em><\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"world-war-2-1939-1945\">World War 2 (1939 &#8211; 1945)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">The second World War was<\/span> underway, and the United States entered<span style=\"font-weight: 400;\"> the fray in 1942 after the bombing of Pearl Harbor. What\u2019s interesting to note about Pearl Harbor is the entire failure in communication leading up to the attack. The United States had good evidence of an impending crisis. Still, all<\/span> methods of communicating with their military base in Honolulu were unsuccessful, <span style=\"font-weight: 400;\">so the island was caught by surprise.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Because of this failure, the U.S. Department of Defense realized they needed a more reliable method of communication. This brought electronics to the forefront as a primary means of communication to replace morse code.<\/span><\/p>\n\n\n<h3 class=\"wp-block-heading\" id=\"first-use-of-a-pcb\">The first use of a PCB<\/h3>\n\n\n<p><span style=\"font-weight: 400;\">During<\/span> World War 2, we saw the first use of a PCB as we know it today in the proximity fuse. This device was used for high-velocity artillery shells, which needed to fire precisely over massive distances in either sky or land. The proximity fuse was initially developed by the British to combat the push of Hitler\u2019s Army. It was later shared with the United States, which<span style=\"font-weight: 400;\"> perfected the design and manufacturing.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1779\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/MK53_fuze.jpg\" alt=\"proximity-fuse\" class=\"wp-image-1779\"\/><figcaption><em>One of the first military applications to use a PCB &#8211; the proximity fuse. (<a href=\"https:\/\/en.wikipedia.org\/wiki\/Proximity_fuze\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">We also have <a href=\"https:\/\/www.thocp.net\/biographies\/eisler_paul.html\">Paul Eisler<\/a>, an Austrian living in the UK, file a patent for copper foil on a non-conductive base of glass. Sound familiar? We still use this concept today for manufacturing PCBs with an insulating layer and copper on the top\/bottom. Eisler took this idea one step further by making a radio with his PCB in 1943, which would pave the way for future military applications.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter wp-image-1780 size-full\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/Radio-with-first-Printed-Circuit-Board-by-Paul-Eisler-1942.jpg\" alt=\"Radio-with-first-Printed-Circuit-Board-by-Paul-Eisler-1942\" class=\"wp-image-1780\"\/><figcaption><em>A radio made by Paul Eisler with the first printed circuit board (PCB). (<a href=\"http:\/\/history-computer.com\/ModernComputer\/Basis\/printed_board.html\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-baby-boomers-the-1940s\">The Baby Boomers (the 1940s)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">As World War 2 comes to a close, we see our soldiers arriving home, starting families, and having many<\/span> children. Cue the Baby Boomer generation. During this Post War age, we see a ton of improvements to existing appliances like vacuum cleaners, washing machines, televisions, and radios. Now that the Great Depression has passed,<span style=\"font-weight: 400;\"> many consumers can finally afford these devices in their homes.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">What we\u2019re still not seeing, though, are consumer-level PCBs. Where is Paul Eisler&#8217;s work? Take a look at this old television below, and you\u2019ll see all of the components but no underlying PCB foundation. <\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1781\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/motvt7303.jpg\" alt=\"1948-tv\" class=\"wp-image-1781\"\/><figcaption><em>An old Motorola television from 1948 with no PCB. (<a href=\"https:\/\/www.antiqueradio.org\/motvt73.htm\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Despite the lack of PCBs, we saw the transistor&#8217;s arrival at Bell Labs in 1947. It took another six years in 1953 for this device to finally be used in products, but why so long? Back in those days, information was spread through journals, conferences, etc. The spread of information simply took time to travel before the Information Age.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter wp-image-931 size-full\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/05\/500004836-03-01.jpg\" alt=\"first-transistor\" class=\"wp-image-931\"\/><figcaption><em>The first transistor was born in Bell Labs in 1947<\/em>.<\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-cold-war-era-1947-1991\">The Cold War Era (1947 &#8211; 1991)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">The Cold War Era arrived<\/span>, marking a considerable period of tension between the United States and the Soviet Union. These two giants almost go to battle <span style=\"font-weight: 400;\">and keep the world suspended in a threat of nuclear annihilation over the differences between capitalism and communism.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Both sides had to beef up their communication abilities to understand what the enemy was doing. It\u2019s here where we see PCBs being used to their full potential. In 1956 the United States Army released their patent for the \u201cProcessing of Assembling Electrical Circuits.\u201d Now manufacturers had a method to hold electronics and establish connectivity between components with copper traces.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">As PCBs start to kick off in the manufacturing realm, we find ourselves in the world\u2019s first Space Race. Russia had some accomplishments during this time, including:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li style=\"font-weight: 400;\"><a href=\"https:\/\/history.nasa.gov\/sputnik\/\"><span style=\"font-weight: 400;\">Launching the first satellite, Sputnik, in 1957<\/span><\/a><\/li><li style=\"font-weight: 400;\"><a href=\"https:\/\/nssdc.gsfc.nasa.gov\/nmc\/spacecraftDisplay.do?id=1959-014A\"><span style=\"font-weight: 400;\">Launching the first spacecraft, Luna 2, to the moon in 1959<\/span><\/a><\/li><li style=\"font-weight: 400;\"><a href=\"https:\/\/www.space.com\/16159-first-man-in-space.html\"><span style=\"font-weight: 400;\">Sending the first cosmonaut, Yuri Gagarin, around the earth in 1961<\/span><\/a><\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1782\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/sputnik-the-first-satellite-placed-mark-thiessen.jpg\" alt=\"sputnik-the-first-satellite\" class=\"wp-image-1782\"\/><figcaption><em>The first satellite, Sputnik, was launched by Russia in 1957. (Image source)<\/em><\/figcaption><\/figure>\n\n\n<h3 class=\"wp-block-heading\" id=\"first-man-on-the-moon\">First man on the moon<\/h3>\n\n\n<p><span style=\"font-weight: 400;\">Where was the United States in all of this? Mainly falling behind, often taking a year or two to develop the same technologies. In response to this gap, we see the U.S. space budget increasing 5x in 1960. We also have the famous <a href=\"https:\/\/www.jfklibrary.org\/JFK\/Historic-Speeches.aspx\" target=\"_blank\" rel=\"noreferrer noopener\">President Kennedy Speech in 1962<\/a>, part of which deserves to be quoted below:<\/span><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>\u201cWe choose to go to the Moon! We choose to go to the Moon in this decade and do the other things, not because they are easy, but because they are hard; because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one we intend to win.\u201d &#8211; U.S. President John F. Kennedy, September 12, 1962<\/p><\/blockquote>\n\n\n\n<p><span style=\"font-weight: 400;\">All of this leads to a landmark moment in history. On <\/span>July 20, 1969, the United States landed<span style=\"font-weight: 400;\"><a href=\"https:\/\/www.nasa.gov\/audience\/forstudents\/k-4\/stories\/first-person-on-moon.html\" target=\"_blank\" rel=\"noreferrer noopener\"> the first man on the moon<\/a>.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1783\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/as11-40-5949b_0.jpg\" alt=\"first-man-on-the-moon\" class=\"wp-image-1783\"\/><figcaption><em>The first man on the moon was a historic moment for humanity. (<a href=\"https:\/\/www.nasa.gov\/content\/former-astronauts-recall-historic-first-moon-landing\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">Back to PCBs, in 1963, <\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Hazeltine_Corporation\"><span style=\"font-weight: 400;\">Hazeltyne Corporation<\/span><\/a><span style=\"font-weight: 400;\"> filed a patent for the first plated through-hole technology. This would allow components to be closely spaced together on a PCB without worrying about crossover connections. We also see the introduction of <a href=\"https:\/\/nmramcrdiv10.yolasite.com\/resources\/Articles\/Surface%20Mount%20Technology%20(SMT)%20and%20devices%20(SMD).pdf\">surface mount technology (SMT) developed by IBM<\/a>. These densely packed components found their first practical use in the <a href=\"https:\/\/www.nasa.gov\/audience\/forstudents\/5-8\/features\/nasa-knows\/what-was-the-saturn-v-58.html\">Saturn rocket boosters<\/a>.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1784\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/US3323198-0.png\" alt=\"through-hole-patent-drawing\" class=\"wp-image-1784\"\/><figcaption><em>The first patent for through-hole PCB technology was in 1967. (<a href=\"http:\/\/www.google.com.gi\/patents\/US3323198\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-dawn-of-the-microprocessor-the-1970s\">The Dawn of the Microprocessor (the 1970s)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">The 70s brought us the first microprocessor in the form of an integrated circuit (IC). This was initially developed in 1958 by Jack Kilby at Texas Instruments. Kilby was a newbie at TI, so his innovative ideas for the IC were largely kept to himself. However, when senior TI engineers were sent out for a week-long conference, Kilby stayed behind to run with the ideas in his head. He developed the first IC in the TI labs, and the returning engineers loved it. <\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-605\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/03\/jack_kilby_microchip-e1358292339386.jpg\" alt=\"jack-kilby\" class=\"wp-image-605\"\/><figcaption><em>Jack Kilby is holding the first integrated circuit<\/em>.<\/figcaption><\/figure>\n\n\n\n<p>In the 1970s, we saw ICs first being used in the manufacturing of electronics. By this time, if you weren\u2019t using a PCB for connectivity,<span style=\"font-weight: 400;\"> you were in big trouble.<\/span><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-dawn-of-the-digital-age-the-1980s\">The Dawn of the Digital Age (the 1980s)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">The Digital Age brings about massive changes in how we consume media by introducing<\/span> personal devices like <span style=\"font-weight: 400;\">compact discs, VHS, cameras, gaming consoles, walkmans, etc. <\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1785\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/O6LrT5N.png\" alt=\"atari-video-game\" class=\"wp-image-1785\"\/><figcaption><em>Making a kid\u2019s dream come true with the Atari video game console in 1980. (<a href=\"http:\/\/imgur.com\/gallery\/2EwON\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">It\u2019s important to note that PCBs were still being drawn by hand with a light board and stencils, but then computers and EDA arrived<\/span>. We see EDA software like Protel and EAGLE completely changing how we design and manufacture electronics. Instead of PCB photographs<span style=\"font-weight: 400;\">, we\u2019re now able to save our designs as Gerber text files whose coordinates can be fed into manufacturing machinery to produce a PCB.<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1786\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/engineeringdrawing500.jpg\" alt=\"old-pcb-design\" class=\"wp-image-1786\"\/><figcaption><em>Drawing a printed circuit board with tape and mylar before EDA arrived. (<a href=\"http:\/\/www.evilmadscientist.com\/2013\/how-printed-circuit-boards-are-designed-1960-edition\/\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-internet-age-1990s\">The Internet Age (1990s)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">In the 90s, we see the use of silicon come into full swing with the introduction of BGAs. Now we can fit more gates onto a single chip and start to embed memories and Systems on Chip (SoC) together. This is also a period of intense miniaturization in electronics. We don&#8217;t see any new features added to PCBs, but the entire design process is starting to change and evolve, shifting to the IC.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Now designers have to implement Design for Test (DFT) strategies into their layouts. It\u2019s not as easy to pop off a component and add a blue wire. Engineers have to design their layouts from the perspective of future rework. T<\/span>hinking ahead, can I easily remove these components?<span style=\"font-weight: 400;\"> Are all of those components in a way that they emoved? This is a huge concern.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">This is also when smaller component packages like 0402 make the hand soldering of boards nearly impossible. The designer now lives in his EDA software, and the manufacturer handles the physical production and assembly. <\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full wp-image-1787\"><img decoding=\"async\" src=\"https:\/\/www.autodesk.com\/products\/eagle\/blog\/wp-content\/uploads\/2017\/10\/smdsizes.jpg\" alt=\"smd-size-chart\" class=\"wp-image-1787\"\/><figcaption><em>Surface mount components from largest to smallest. (<a href=\"https:\/\/weatherhelge.wordpress.com\/smd\/\">Image source<\/a>)<\/em><\/figcaption><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"the-hybrid-age-2000s-and-beyond\">The Hybrid Age (2000s and Beyond)<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">Cut to the present age of electronics and PCB design; we call this the Hybrid Age. In the past, we had multiple devices for multiple needs. You needed a calculator; you bought a calculator. You wanted to play video games; you purchased a video game console. Now you buy a smartphone and get 30 different layers of functionality built in. This might seem incredibly obvious, but when you look at everything our smartphones can do, it\u2019s pretty astounding:<\/span><\/p>\n\n\n<?xml encoding=\"utf-8\" ?><figure class=\"wp-block-table MuiTableContainer-root\"><table class=\" MuiTable-root DhigTable--verticalAlignment--top\"><tbody><tr class=\" MuiTableRow-root\"><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Gaming Device<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Address Book<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Email<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Barcode Scanner<\/span><\/td><\/tr><tr class=\" MuiTableRow-root\"><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Flashlight<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Clock<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Camera<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Navigation<\/span><\/td><\/tr><tr class=\" MuiTableRow-root\"><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Music Player<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Schedule<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Video Recorder<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Map<\/span><\/td><\/tr><tr class=\" MuiTableRow-root\"><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Internet Browser<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Calendar<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Movie Player<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Calculator<\/span><\/td><\/tr><tr class=\" MuiTableRow-root\"><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Telephone<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Note Pad<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Tickets<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Voice Recorder<\/span><\/td><\/tr><tr class=\" MuiTableRow-root\"><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Answering Machine<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Text Message<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Banking<\/span><\/td><td class=\" MuiTableCell-root\"><span style=\"font-weight: 400;\">Books<\/span><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><span style=\"font-weight: 400;\">We\u2019re in an age of consolidation of devices, but what\u2019s coming next? PCBs are established, and <\/span>we have processes and procedures for nearly everything. High-speed applications are becoming the norm. We\u2019re also seeing only 25% of PCB designers under <span style=\"font-weight: 400;\">45 years old, and 75% are getting ready to retire. The industry seems to be in a period of crisis. <\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Could the future of PCB design be in robotics? Maybe in wearables with flexible circuitry? Or perhaps we might see protons replacing electrons with Photonics. As for the physical PCBs that we have come to know, even those might change in the future. Instead of needing a physical medium for connectivity between components, there is the potential for wave technology. This would allow parts to send signals wirelessly without needing copper.<\/span><\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"what-will-the-future-hold\">What Will the Future Hold?<\/h2>\n\n\n<p><span style=\"font-weight: 400;\">No one knows what PCB design or even the electronics industry as a whole will look like<span style=\"font-weight: 400;\"> in the future<\/span>. Nearly 130 years have passed since our manufacturing muscles have kicked into motion. Since then, the world has been forever changed with significant introductions like the automobile, electric appliances, computers, smartphones, and more. Gone are the days of our reliance on coal, wood, or oil for all of our basic sustenance and survival. Now we have electronics that can power our everyday needs.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">But what will the future hold? That\u2019s a big unknown. What is known is that every invention that came before us stood on the shoulders of its predecessor. Our forefathers got PCB design where it is today, and now it\u2019s up to us to innovate and revolutionize how we design and interact with technology. The future could be anything. The future is up to you.<\/span><\/p>\n\n\n\n<p><span style=\"font-weight: 400;\">Ready to design the future of technology? No matter what PCB you&#8217;re working on, Autodesk Fusion 360 can help streamline your PCB design and manufacturing process. Try Fusion 360 for free today!<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.autodesk.com\/products\/fusion-360\/free-trial?mktvar002=4333583001|ORG|&amp;utm_medium=social&amp;utm_source=other&amp;utm_campaign=4333583dmblogf360&amp;utm_id=4333583001 \"><img loading=\"lazy\" decoding=\"async\" width=\"766\" height=\"128\" src=\"https:\/\/www.autodesk.com\/products\/fusion-360\/blog\/wp-content\/uploads\/2022\/04\/Download-free-trial.jpg\" alt=\"\" class=\"wp-image-31486\" srcset=\"https:\/\/www.autodesk.com\/products\/fusion-360\/blog\/wp-content\/uploads\/2022\/04\/Download-free-trial.jpg 766w, https:\/\/www.autodesk.com\/products\/fusion-360\/blog\/wp-content\/uploads\/2022\/04\/Download-free-trial-300x50.jpg 300w\" sizes=\"auto, (max-width: 766px) 100vw, 766px\" \/><\/a><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Learn about the history of PCBs evolution with the introduction of the transistor, integrated circuit, BGA, and SMT.<\/p>\n","protected":false},"author":3911,"featured_media":31931,"menu_order":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[359],"tags":[207,360,206],"coauthors":[],"class_list":["post-17990","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-electronics-engineering","tag-electronics","tag-electronics-engineer","tag-pcb","dhig-theme--light"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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I joined the EAGLE team 25 years ago to satisfy my passion for being involved with circuit board designs. I\u2019m the Technical Marketing Engineer for Fusion 360 electronics and part of the Fusion 360 community team. I have published best practices articles, Blogs, hundreds of video tutorials, and hosted several electronic design bootcamps. 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