{"id":450,"date":"2016-04-21T22:59:49","date_gmt":"2016-04-21T22:59:49","guid":{"rendered":"https:\/\/einhugur.com\/blog\/?page_id=450"},"modified":"2016-10-03T23:47:27","modified_gmt":"2016-10-03T23:47:27","slug":"understanding-transistor-specification-sheets","status":"publish","type":"page","link":"https:\/\/einhugur.net\/blog\/index.php\/basic-electronics\/understanding-transistor-specification-sheets\/","title":{"rendered":"Understanding transistor specification sheets"},"content":{"rendered":"<p><strong>It is good to know what to look for when reading transistor specification sheets.<\/strong><\/p>\n<p><strong>Some important things are:<\/strong><\/p>\n<ul>\n<li>NPN vs PNP transistor. &#8211;\u00a0<em>The NPN ones switch on the low side (-) while PNP transistors switch on the high side (+). This is important difference and for example this difference<\/em><\/li>\n<li>Material (usually Germanium or Silicon) &#8211;\u00a0<em>Forward bias for the base emitter junction is usually 0.2 &#8211; 0.3 V for germanium and about 0.6 V for silicon.<br \/>\n<\/em>First letter of the transistors name will specify material type where the letters mean:<\/p>\n<ul>\n<li>A &#8211; <em>Germanium<\/em><\/li>\n<li>B &#8211; <em>Silicon<\/em><\/li>\n<li>C &#8211; <em>Gallium Arsenide<\/em><\/li>\n<li>R &#8211;\u00a0<em>Compound materials<\/em><\/li>\n<\/ul>\n<\/li>\n<li>VCEO &#8211;\u00a0<em>Collector to Emitter breakdown voltage. This is the maximum voltage that can be placed from the collector to the emitter.<\/em><\/li>\n<li>VCBO &#8211;\u00a0<em>Collector to base breakdown voltage. This is the maximum collector base voltage.<\/em><\/li>\n<li>IC &#8211;\u00a0<em>Collector maximum current<\/em><\/li>\n<li>VCEsat &#8211;\u00a0<em>The collector emitter saturation voltage<\/em><\/li>\n<li>Hfe &#8211; <em>This is the current gain of the transistor. This is basically the\u00a0<\/em><span style=\"font-family: symbol;\"><em>b (beta value)<\/em>.<\/span><\/li>\n<li>FT &#8211;\u00a0Frequency Transition (this is basically how fast you can switch the transistors state)<\/li>\n<\/ul>\n<p>Transistor\u00a0naming:<\/p>\n<p>Note that more than one naming schemes\u00a0exist so if you get transistor with name like\u00a02N706, then it is not in the naming sceme described above for the materials. 2 here simply means\u00a0Bipolar transistor.<\/p>\n<hr \/>\n<p><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><br \/>\n<!-- Ad1 --><br \/>\n<ins class=\"adsbygoogle\" style=\"display: inline-block; width: 728px; height: 90px;\" data-ad-client=\"ca-pub-7239804524988398\" data-ad-slot=\"3151898264\"><\/ins><br \/>\n<script>\n(adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>It is good to know what to look for when reading transistor specification sheets. Some important things are: NPN vs PNP transistor. &#8211;\u00a0The NPN ones switch on the low side (-) while PNP transistors switch on the high side (+). This is important difference and for example this difference Material (usually Germanium or Silicon) &#8211;\u00a0Forward &hellip; <a href=\"https:\/\/einhugur.net\/blog\/index.php\/basic-electronics\/understanding-transistor-specification-sheets\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Understanding transistor specification sheets<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":473,"menu_order":20,"comment_status":"open","ping_status":"closed","template":"","meta":{"spay_email":""},"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/Pd75nk-7g","jetpack-related-posts":[{"id":311,"url":"https:\/\/einhugur.net\/blog\/index.php\/xojo-gpio\/putting-the-gpio-pin-behind-transistor-to-get-more-current\/","url_meta":{"origin":450,"position":0},"title":"Putting the GPIO pin behind transistor to get more current","date":"October 23, 2015","format":false,"excerpt":"In this example we are going to let the GPIO pin control a transistor so that we can draw more power when controlling a LED than what the GPIO pin can supply. We will be using a simple LED in this example where we aim to draw 16 mA power\u2026","rel":"","context":"Similar post","img":{"alt_text":"TransistorExperimentbb","src":"https:\/\/i0.wp.com\/einhugur.com\/blog\/wp-content\/uploads\/2015\/10\/TransistorExperimentbb.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":421,"url":"https:\/\/einhugur.net\/blog\/index.php\/xojo-gpio\/optocouplers\/","url_meta":{"origin":450,"position":1},"title":"Optocouplers","date":"April 18, 2016","format":false,"excerpt":"In this example we are going to take a look at Optocouplers. Disclaimer: We do not take any responsibility for possible errors in the guide or errors that you might do wiring it up. Incorrect wiring can result in damaged sensor or damaged Raspberry PI. Prerequisites: We hight recommend that\u2026","rel":"","context":"Similar post","img":{"alt_text":"Optocoupler","src":"https:\/\/i0.wp.com\/einhugur.com\/blog\/wp-content\/uploads\/2016\/04\/Optocoupler.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":473,"url":"https:\/\/einhugur.net\/blog\/index.php\/basic-electronics\/","url_meta":{"origin":450,"position":2},"title":"Basic electronics","date":"April 22, 2016","format":false,"excerpt":"LED orientation Resistor color codings Understanding transistor specification sheets Understanding your breadboard and placement of Raspberry cobbler Coding of small bodied capacitors Voltage dividers","rel":"","context":"Similar post","img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":445,"url":"https:\/\/einhugur.net\/blog\/index.php\/big-projects\/build-fan-controller-for-orange-pi-pc\/","url_meta":{"origin":450,"position":3},"title":"Build fan controller for Orange PI PC","date":"May 28, 2016","format":false,"excerpt":"In this example we are going build fan controller for Orange PI PC. By: Bj\u00f6rn Eir\u00edksson and H\u00f6r\u00f0ur Kristj\u00e1nsson. Disclaimer: We do not take any responsibility for possible errors in the guide or errors that you might do wiring it up. Incorrect wiring can result in damaged sensor or damaged\u2026","rel":"","context":"Similar post","img":{"alt_text":"FanControllerCircuitScheme","src":"https:\/\/i0.wp.com\/einhugur.com\/blog\/wp-content\/uploads\/2016\/04\/FanControllerCircuitScheme.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":224,"url":"https:\/\/einhugur.net\/blog\/index.php\/xojo-gpio\/working-with-leds-and-wiring-4-pin-rgb-led-to-raspberry-pi\/","url_meta":{"origin":450,"position":4},"title":"Working with LED's - And Wiring 4 pin RGB led to Raspberry PI","date":"October 12, 2015","format":false,"excerpt":"In this example we are going\u00a0learn some basics on how to calculate the resistor for LED, and we will take a look at how to wire up a 4 pin RGB LED. Disclaimer: We do not take any responsibility for possible errors in the guide or errors that you might\u2026","rel":"","context":"Similar post","img":{"alt_text":"RGBLedMutimeterTestNew","src":"https:\/\/i1.wp.com\/einhugur.com\/blog\/wp-content\/uploads\/2015\/10\/RGBLedMutimeterTestNew.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]},{"id":165,"url":"https:\/\/einhugur.net\/blog\/index.php\/xojo-gpio\/hc-sr04-ultrasonic-sensor\/","url_meta":{"origin":450,"position":5},"title":"HC-SR04 and US-015 - Ultrasonic sensors","date":"September 22, 2015","format":false,"excerpt":"In this example we are going to connect to HC-SR04 and or US-015\u00a0ultrasonic sensor. (Updated 18. Oct 2015, adding US-015 sensor and sensor specs) (Updated 18. Apr 2016, adding more info for accuracy for the HC-SR04 sensor) A ultrasonic sensor will send ultrasonic sound out which will echo on objects\u2026","rel":"","context":"Similar post","img":{"alt_text":"Ultrasonic wiring","src":"https:\/\/i1.wp.com\/einhugur.com\/blog\/wp-content\/uploads\/2015\/09\/Screen-Shot-2015-09-22-at-00.01.38.png?resize=350%2C200&ssl=1","width":350,"height":200},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/einhugur.net\/blog\/index.php\/wp-json\/wp\/v2\/pages\/450"}],"collection":[{"href":"https:\/\/einhugur.net\/blog\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/einhugur.net\/blog\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/einhugur.net\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/einhugur.net\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=450"}],"version-history":[{"count":5,"href":"https:\/\/einhugur.net\/blog\/index.php\/wp-json\/wp\/v2\/pages\/450\/revisions"}],"predecessor-version":[{"id":789,"href":"https:\/\/einhugur.net\/blog\/index.php\/wp-json\/wp\/v2\/pages\/450\/revisions\/789"}],"up":[{"embeddable":true,"href":"https:\/\/einhugur.net\/blog\/index.php\/wp-json\/wp\/v2\/pages\/473"}],"wp:attachment":[{"href":"https:\/\/einhugur.net\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}