Af117 cross reference electronic circuits, tv schematics, audio. Use the easy search guide below to go through categories like computer systems, electromechanical components, and optoelectronics, and fine tune your search by selecting from various end markets like consumer appliances, lighting. It did indeed show shortcircuit between collector and case. Bf450 datasheet, equivalent, cross reference search. The 2n32 is an rca pointcontact transistor in a singleended package that has all leads emerging from the same end. La733p amplifier transistors pnp silicon maximum ratings rating symbol value unit collectoremitter voltage vceo 48 vdc collectorbase voltage vcbo 60 vdc emitterbase voltage vebo 5. Articles transistors in vintage radios marks pages home. Af118 transistors 7 in stock to buy, photo, pdf datasheet. I replace these with equivalent af12 transistors which dont suffer with this problem, the af127 is the identical spec to the af117 and an af125.
Draf115e silicon pnp epitaxial planar type for digital circuits complementary to drcf115e dra3115e in ml3 type package features package low collectoremitter saturation voltage vcesat code contributes to miniaturization of sets, mount area reduction ml3n4b eco. Tin whiskers growing on internal walls of transistor can vintage radios this anecdote describes how collectors of vintage radios have combated the electrical shorting malfunction of certain transistors utilized in a variety of collectable radio sets. Free device maximum ratings rating symbol value unit collector. Ac127 datasheet germanium small signal transistors.
Its importance in todays society rests on its ability to be massproduced using a highly automated process semiconductor device fabrication that achieves astonishingly low per transistor costs. Af117 datasheet, equivalent, cross reference search. Af117 transistor components datasheet pdf data sheet free from datasheet4u. It is composed of a semiconductor material with at least three terminals for connection to an external circuit. There is an af118, but this is not found in transistor radios its a high voltage transistor intended for use in video circuits, but it is occasionally found elsewhere for example, the leak stereo 30 hifi amplifier.
A voltage or current applied to one pair of the transistor s terminals changes the current through another pair of terminals. By far the most unreliable transistors are the af117series used in the rf and if stages of many. The column marked case is the outline of the transistor case. Germanium transistors the following table lists the parameters for germanium transistors. Ic cross reference cross reference ci stk cross reference ci tda cross reference ci sharp cross reference hitachi audio ic cross reference and circuit applications smd cross reference and equivalent we make every effort to ensure that the material on this site is accurate, however we do not warrant or represent that the information is free. Features complementary to 2sc3263 lapt linear amplifier power transistor high transition frequency bare lead frame. This part is a kind of semiconductor called af117 function of this product has transistor. Mps4126 amplifier transistor pnp silicon features this is a pb. Discrete semiconductors data sheet book, halfpage m3d186 bf450 pnp medium frequency transistor 1997 jul 11 product specification supersedes data of september 1994 file under discrete semiconductors, sc04 philips semiconductors product specification pnp medium frequency transistor bf450 features pinning low current. Ad161 datasheet, ad161 pdf, ad161 data sheet, ad161 manual, ad161 pdf, ad161, datenblatt, electronics ad161, alldatasheet, free, datasheet, datasheets, data sheet. Typical sourcedrain diode forward voltage 0 20 40 60 80 100 120 140 0 4 8 12 16 20 q, total gate charge nc v, gatetosource voltage v g gs for test circuit see. Af117 datasheet, af117 pdf, af117 pinout, equivalent, replacement transistor etc, schematic, circuit, manual. The leads were anchored in a small glass block, allowing the transistor to be constructed above it, and then the whole upper part was sealed in a white epoxy block.
Uk vintage radio repair and restoration transistor. Data sheets contain information regarding a product macom technology solutions is considering for development. Pnp resistorequipped transistor see simplified outline, symbol and pinning for package details. Datasheet archive here youll find detailed product descriptions and quickclick access to product datasheets. The alloydiffused af114, af115, af116 and af117 transistors were. Replacement modules did thankfully have af12 transistors. These were made by etching depressions into an ntype germanium base from both sides with jets of indiumiii sulfate until it was a few tenthousandths of an inch thick. Transistors with internal shorts antique radio forums. Making a transistor radio parts list of course, if you had a time machine, you could visit the peter vis hardware mercantile store, and i will pack all of these items for you in a nice brown paper bag.
The type numbers include af114, af115, af116, af117, oc170 and oc171. The collector accepts an input current from the circuit, but it cant send the current through the transistor until allowed to by the base. A voltage or current applied to one pair of the transistor s terminals changes the current flowing through another pair of terminals. The alloydiffused af114, af115, af116 and af117 transistors were introduced in the early 1960s. The product has constant h fe characteristics in a wide current range, providing highquality audio sounds. This product complies with the rohs directive eu 200295ec. Do not substitute it with a too high or too low ohms value as this will make the mosfet run warmer and eventually blow the mosfet itself. Base voltage 2n6515 2n6517, 2n6520 vcbo 250 350 vdc.
Af178 datasheet, cross reference, circuit and application notes in pdf format. Mullard data book, 19734, mister transistor and other websites see references. Af117 transistor datasheet, cross reference, circuit and application notes in pdf format. Af117 transistor components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors. Sn76477 2n4401 free transistor equivalent book semiconductor data handbook mj802 2n3866 s2p tis43 bc149c xr2206 application notes lm1 siemens transistor manual text. The first highfrequency transistor was the surfacebarrier germanium transistor developed by philco in 1953, capable of operating up to 60 mhz. Af117 series transistors by far the most unreliable transistors are the af117series used in the rf and if stages of many transistor radios produced in the 1960s. Tube af 117 or rohre af117 id33809, transistor, wires and rfifstage shown. High voltage 75v video amplifier for transistor tvs.
Cases gec mazda stc aei hivac newmarket texas transistors. The case drawings are shown at the bottom of the page. Power factor limits line distortion world wide line operation overvoltage protection accurate power limiting average current mode control improved noise immunity improved feedforward line regulation leading edge modulation 150a typical startup current lowpower bicmos operation to 17v operation d, dw, n, and pw packages. Performance is based on target specifications, simulated results, andor prototype measurements. Its good to know that there is a cheap ussr replacement for the af117, i shall acquire a few and see if they work ok. Uk vintage radio repair and restoration transistor faults. Af117 replacements uk vintage radio repair and restoration. Im going on the data in my venerable towers book which gives a min hfe of 10.
General purpose rfif amplifier in lwmwsw receivers. Af115 datasheet, equivalent, cross reference search. In practice, the af125 can be used to replace af114115116. Pnp limiting continuous power dissipation collector pc of the transistor. Any orders placed through this store will not be honored or fulfilled. The offending af117 was unsoldered and checked with a meter. Af117 transistor components datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other electronic components such as resistors, capacitors, transistors and diodes. Modern transistor circuits bernards 177 american radio history. Semiconductor transistor, diode, ic cross reference. The transistor is the key active component in practically all modern electronics. There is at least one silicon transistor that apparently will replace an af117 usually without modification, the bf450. A transistor is a semiconductor device used to amplify and switch electronic signals and power. Jul 29, 2019 a transistor is basically 2 diodes that share one end. A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power.
Andy emmersons electronic classics book suggests that the short circuit can be blown away by discharging a 50uf capacitor charged to 50v across it. Handbook tested transistor circuits american radio history. Free devices maximum ratings rating symbol value unit collector. Arrow is showing the mosfet ohms value in a transistor substituion book if the original fet part number is 1 ohm then a good replacement mosfet must have the ohm values between of 0. This is a pdf format of the well known hardware pinout book, which covers various computer, electrical and electronic item pinouts.
By far the most unreliable transistors are the af117 series used in the rf and if stages of many transistor radios produced in the 1960s. The shared end is called the base and the other 2 ends are called the emitter and collector. It is composed of semiconductor material with at least three terminals for connection to an external circuit. Tin whiskers growing inside 45 year old af114 transistors. Af117 af114 2g381 2n2398 gt346b oc170 2sa239 lowpower germanium pnp 2n406. Af117 datasheet, af117 pdf, af117 data sheet, af117 manual, af117 pdf, af117, datenblatt, electronics af117, alldatasheet, free, datasheet, datasheets, data sheet. Emitter voltage 2n6515 2n6517, 2n6520 vceo 250 350 vdc collector. Many consider it to be one of the greatest inventions of the 20th century. If not, it can usually be obtained from transistor data books. The book is intended as a selection guide to the design.
691 1288 1372 438 231 483 1489 155 514 126 1246 1096 435 1353 774 796 938 44 932 1542 1273 1442 72 1628 796 73 129 893 1470 143 273 108 1031 218