{"title":"Diodes","description":"","products":[{"product_id":"1n270","title":"1N270 Germanuim Diode","description":"\u003cp\u003ePrice per 1 each diode.\u003cbr\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N270-datasheet.pdf\"\u003e1N270 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1N270 Diode is another diode used in Crystal Radio sets ( Xtal Radio Sets ). It is made of a material called germanium a material used for transistors and diodes as one of the first semiconductors materials used commercially. These diodes are becoming hard to find I try to keep in stock around 1000 at all times.\u003c\/p\u003e\n\u003cp\u003eSome places are selling silicon diodes as a substitute or equivalent replacement with the 1N270 number as germanium. Some of there data sheets even say germanium in the header but state silicon in the data area. Mine are germanium point contact diodes and not Schottky Silicon Diode.\u003c\/p\u003e\n\u003cp\u003eThe 1N270 Diode and a ceramic earphone and a tuning coil are all that is needed to make a simple crystal radio set ( Xtal Radio Set ).\u003c\/p\u003e\n\u003cp\u003eThe 1N270 Germanium diode can carry 100 volts 40 ma and the 1N34A can handle 65 volts and 50 ma and the 1N60 can handle 45 volts 50 ma if my data is correct.\u003c\/p\u003e\n\u003cp\u003eThe 1N270 Germanium Diode is used in many Ham Radio and Amateur Radio circuits as detectors and up converters, down converters ( Mixers ). Input shunts to protect equipment from overload.\u003c\/p\u003e\n\u003cp\u003eThe 1N270 Diode is also very popular in sound effect circuits like Guitar pedals.\u003c\/p\u003e\n","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983944049010,"sku":"1N270","price":0.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N270-1.jpg?v=1782564620"},{"product_id":"1n270-with-numbers","title":"1N270 Diode With Numbers","description":"\u003cp\u003ePrice per 1 each diode.\u003cbr\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N270-datasheet.pdf\"\u003e1N270 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eNew old stock 1N270 germanium diodes with the numbers on them. Some numbering may be faint due to age but they marked 1N270. Due to limited supply of these there is no quantity discounts for them.\u003c\/p\u003e\n\u003cp\u003eManufactured by ST.\u003c\/p\u003e\n","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983944081778,"sku":"1N270-Num","price":1.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N270-num-1.jpg?v=1782564617"},{"product_id":"1n277","title":"1N277 Germanium Diode","description":"\u003cp\u003ePrice per 1 each diode.\u003cbr\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N277-datasheet.pdf\"\u003e1N277 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1N277 Germanium diode is similar to the 1N270 except it is rated at 110 volts at 75ma. This diode can be used in crystal ( Xtal ) radio sets also.\u003c\/p\u003e\n\u003cp\u003eThe 1N277 not used as much as the other germanium diodes in Ham Radio and Amateur Radio circuits but has high voltage rating making them very good for shunting the input to a radio receiver.\u003c\/p\u003e\n\u003cp\u003eSome places are selling silicon diodes as a substitute or equivalent replacement with the 1N277 number as germanium. Some of there data sheets even say germanium in the header but state silicon in the data area. Mine are germanium point contact diodes and not Schottky Silicon Diode.\u003c\/p\u003e\n","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983944114546,"sku":"1N277","price":1.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N277-1.jpg?v=1782564623"},{"product_id":"jan-1n3190","title":"JAN-1N3190 Diode","description":"\u003cp\u003ePrice per 1 each diode.\u003c\/p\u003e\n\u003cp\u003eThese JAN-1N3190 diodes were made for the military around 1968-1969 they were used in many military devices. These meet the military requirement of MIL-S-19500. Metal case hermetically sealed. These parts have been in storage since 1969 when they were last made.\u003c\/p\u003e\n\u003cp\u003eThese are not good for Crystal Radio use. They are just old style silicon 1 Amp diodes in a metal case.\u003c\/p\u003e\n","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983944147314,"sku":"1N3190","price":0.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1n3190-1.jpg?v=1782564637"},{"product_id":"1n34a","title":"1N34A Germanium Diode","description":"\u003cp\u003ePrice per 1 each diode.\u003c\/p\u003e\n\u003cp\u003eThe 1N34A Germanium Diode the diode most used in Crystal Radio sets ( Xtal Radio Sets ).  1N34A diodes are made of a material called germanium a material used for transistors and diodes as one of the first semiconductor materials used commercially.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N34A-datasheet.pdf\"\u003e1N34A Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eCrystal Radio Receivers depend on the 1N34A Germanium Diode's rated Forward Voltage Drop ( The amount of voltage before is starts to conduct ) of .3 volts. Silicon diodes are rated around .7 volts.  However, the voltage for the 1N34A Diode is measured with a current around 1ma.  As the current increases so does the Voltage Drop and vise versa.  The 1N34A Germanium Diode actually starts to conduct at very low voltages.  The 1N34A will start to conduct around .1 volt.  So in a Crystal Radio Receiver you need only to produce around .1 volt from your Crystal Radio Set to begin to hear a station.  That is the reason the 1N34A Diode is so popular with Crystal Radio Set Builders.\u003c\/p\u003e\n\u003cp\u003eThe 1N34A Germanium Diode, a ceramic earphone and a tuning coil are all that is needed to make a simple crystal radio set.\u003c\/p\u003e\n\u003cp\u003eBecause Crystal Radio Sets use only the power coming from the antenna, a good antenna is required to drive the earphone of a Crystal Radio Set.  If you live in the city close to a transmitter antenna then you should be able to pick up that station on your Crystal Radio Set ( Xtal Radio Set ) with only a short antenna wire.\u003c\/p\u003e\n\u003cp\u003e1N34A Germanium Diodes are some times called Crystal Diodes. And sometimes referred to as IN34A Diodes or Germanium Detector Diodes. And thus the name Crystal Diode Radio Sets is used by some instead of Crystal Radio sets.\u003c\/p\u003e\n\u003cp\u003eThe 1N34A Germanium Diode is an improved version of the 1N34 diode. So any circuit that specifies a 1N34 Germanium Diode can be replaced with the 1N34A Germanium Diode.\u003c\/p\u003e\n\u003cp\u003e1N34A Diodes are used in may other circuits besides Crystal Radio Sets. Because of their low forward voltage drop, they have found uses in Sound Effect Circuits and Voltage Dropping Circuits. However the use of the 1N34A in Crystal Radio Sets are of the most common uses I know of. The 1N34A Germanium Diode is the one supplied in my Simple Crystal Radio Kits.\u003c\/p\u003e\n\u003cp\u003eTo my knowledge, genuine germanium 1N34A diodes are no longer manufactured. The 1N34A Diodes I sell are of highest quality. They are starting to show their age. There may be some light corrosion on the leads.\u003c\/p\u003e\n\u003cp\u003eThe 1N34A also is very popular in Ham Radio and Amateur Radio circuits. They are used as detectors and in up converter and down converter circuits ( Mixers ). The 1N34A is also a good RF input bypass or shunt to protect equipment from voltage spikes.\u003c\/p\u003e\n\u003cp\u003eThe 1N34A is also very popular in sound effect circuits acting as a clipper to produce Fuzzy sounds and various distortions. Guitar sound effect circuits and Pedal circuits often specify these.\u003c\/p\u003e\n\u003cp\u003eSome places are selling silicon diodes as a substitute or equivalent replacement with the 1N34A number as germanium. Some of there data sheets even say germanium in the header but state silicon in the data area. Mine are germanium point contact diodes and not Schottky Silicon Diode.\u003c\/p\u003e","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983944180082,"sku":"1N34A","price":2.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N34A-1.jpg?v=1782564615"},{"product_id":"1n450","title":"1N450 Germanium Diode","description":"\u003cp\u003ePrice per 1 each diode.\u003cbr\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N450-datasheet.pdf\"\u003e1N450 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThese are antique diodes. I do not know the year of manufacturer but most likely in the 50's.\u003c\/p\u003e\n\u003cp\u003eBecause of age they are not in new or perfect condition the pictures above are of the actual parts. They are in pretty good condition for there age. All of the diodes will be tested with the diode test function on my volt meter before shipment.\u003c\/p\u003e\n\u003cp\u003eIf you are making a crystal radio you can jazz up its looks with an antique diode.\u003c\/p\u003e\n\u003cp\u003eThe 1N450 is not one of the more common diodes, so I do not know what was originally used for.\u003c\/p\u003e\n","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983944212850,"sku":"1N450","price":1.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N450-2.jpg?v=1782564649"},{"product_id":"1n60","title":"1N60 Germanium Diode","description":"\u003cp\u003ePrice per 1 each diode.\u003cbr\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N60-datasheet.pdf\"\u003e1N60 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1N60 Diode is another diode used in Crystal Radio sets ( Xtal Radio Sets ). It is made of a material called germanium a material used for transistors and diodes as one of the first semiconductors materials used commercially.\u003c\/p\u003e\n\u003cp\u003eHam Radio and Amateur Radio circuits incorporate these as detector diodes. These are also used in up converters and down converters ( Mixers ) and ring detectors.\u003c\/p\u003e\n\u003cp\u003eThe 1N60 is also used in sound effect circuits, used as clippers in Guitar pedals.\u003c\/p\u003e\n\u003cp\u003eSome places are selling silicon diodes as a substitute or equivalent replacement with the 1N60 number as germanium. Some of there data sheets even say germanium in the header but state silicon in the data area. Mine are germanium point contact diodes and not Schottky Silicon Diode.\u003c\/p\u003e\n","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983944245618,"sku":"1N60","price":1.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1n60-2.jpg?v=1782564615"},{"product_id":"1n914","title":"1N914 Silicon Diode","description":"\u003cp\u003ePrice per 1 each diode.\u003cbr\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N914-datasheet.pdf\"\u003e1N914 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e1N914 Silicon Diode\u003c\/p\u003e\n","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983944278386,"sku":"1N914","price":0.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/1N914-1.jpg?v=1782564647"},{"product_id":"bat46","title":"BAT46 Schottky Diode","description":"\u003cp\u003ePrice per 1 each diode.\u003cbr\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/bat46-datasheet.pdf\"\u003eBAT46 Datasheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eI did a lot of research to find this diode (Schottky Bat-46) actual has a lower forward break down voltage than a germanium diode at less than 10ma it has a forward voltage of .25 germanium has .35 volt.\u003c\/p\u003e\n\u003cp\u003eExperiment with the Schottky BAT46 diode in your next crystal radio set ( Xtal Radio Set ) project.\u003c\/p\u003e\n\u003cp\u003eThe Schotty Barrier Diodes like the BAT 46 are becoming ever more popular in Ham Radio and Amateur Radio community. The are being used as up converters and down converters ( Mixers ) and a host of other applications in radio and RF circuits. Generally replacing the germanium type diodes.\u003c\/p\u003e\n","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983953486194,"sku":"BAT46","price":0.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/bat46-1.jpg?v=1782564627"},{"product_id":"mvam109","title":"MVAM109 Varactor Tuning Diode","description":"\u003cp\u003ePrice per 1 each diode.\u003c\/p\u003e\n\u003cp\u003eThese MVAM109 Varactor Tuning Diodes can tune the AM broadcast Band . The MVAM109 Vatactor Tuning Diodes have a capacitance of around 20pf to 450pf. The MVAM109 Tuning Diodes are becoming rare and are being replaced with newer devices.\u003c\/p\u003e\n","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983958335858,"sku":"MVAM109","price":2.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/mvam109-1.jpg?v=1782564950"}],"url":"https:\/\/atomic-29.com\/collections\/diodes.oembed","provider":"Atomic 29","version":"1.0","type":"link"}