Home t transistors bc series bc109 bc109b npn general purpose transistor. These are the names of the packages and not the transistor part numbers. I want to build this circuit, but i dont have the proper transistors. Semiconductor devices are coded as b stands for silicon transistor c for audio frequency range 107 simple home experiment use first character material a. A bc108 transistor is an npn negativepositivenegative bipolar transistor. Bc182 and bc212 equivalent transistor electronics forum. The bd type is a power transistor which need to be able to handle 2amp momentarily. Bc109c datasheet, equivalent, cross reference search. Initially in metal to18 packages, the range expanded over time to include other package. Pnp general purpose transistor bc177 limiting values in accordance with the absolute maximum rating system iec 4.
More time is spent figuring out which one to replace and, sometimes, what to replace it with. See all 2 formats and editions hide other formats and editions. Using the numbering scheme it can be seen that a transistor with the part number bc107 is a silicon low power audio transistor and a bby10 is silicon variable capacitance diode for industrial or commercial use. Bc109 cross reference electronic circuits, tv schematics.
The main reason being the carbon amplifier tends to current dump and demands small high pulses of power in line with the peak audio levels. Continental device india limited data sheet page 4 of 4. Without it, induced voltages from the coil when the transistor turns off will eventually destroy the transistor. Cross reference universal transistor reference page 1. One part that you should add to the circuit is a 1n400x series 1n40011n4007 rectifier across the relay coil. Is there a successor or equivalent transistor to the bc109c. The gain of the bc109b will be in the range from 200 to 450, bc109c ranges from 420 to 800. Continental device india limited c120 naraina industrial area, new delhi 110 028, india. Ive already made some research and came up with c1815npn bc182 whats the pnp for c1815 series. A bc109c for example is a silicon low power audio transistor with a high gain.
Should you find any info that can fill in any of the blanks in the matrix below. Is there a big difference between a bc108 and a bc109 fuzz. I require geophone sm 24 or any other equivalent geophone. Knowing how to substitute an alternate transistor type can speed up your. Bc107 bc108 bc109 low power bipolar transistors page 1 300505 v1. Initially in metal to18 packages, the range expanded. A selection of the most commonly used transistors and more. If you install the wrong polarity, the sandwich wont work. There are circuits where other parameters mean a lot, like in an audio preamp if it says bc109c it means a low noise transistor with a hfe above 500 or so. Problem is, i cant find a bc148 transistor and im looking for a substitute. At the maximum voltage, also called a breakdown voltage bv, electrons. The carbon amplifier is of a standard configuration, the output being fed through the secondary 8 ohm winding of an eagle lt700 transistor output transformer, the 2k primary being used to. I am kinda new to this circuit making stuff, and i took a introductory subject to electrical engineering. The first transistor ever constructed was a pointcontact fet, built at bell labs on december 20th, 1947.
A substitute transistor must have the same polarity, either pnp or npn, as the original. Transistors substitutionsequivalents all about circuits. Depending on the application, the answer could be any small signal npn transistor will work to theres a strange kink to how it works and theres no substitute. Replacement and equivalent transistor for the bc109c. Substitute to bc148 transistor electronics forum circuits. So called equivalent parts, or nte replacements, may not work at all in some cases, because they were worse in some spec, or the circuit was designed with the assumptions that the part had a fairly low bandwidth. Transistor equivalents for the substitution of modern transistors in elderly projects. Smd equivalent the smd versions of the bc109c are available as the mmbt5089 sot23 and mmbth10 sot23. Transistor equivalents for the substitution of modern. Unit vcbo collectorbase voltage open emitter 50 v vceo collectoremitter voltage open base 45 v.
Switching time equivalent test circuits scope rise time bc109c datasheet pdf 5. Crossreferences are not magic, understanding of the circuit and a parametric search of the important parameters is much more reliable. They were created by philips and mullard in 1963 and introduced in april 1966. The bc549c is an npn transistor belonging to a group of generalpurpose npn semiconductors consisting of bc547, bc548, and bc549. Bc109c npn transistor complementary pnp, replacement. Transistor transistors for beginners in electronics. 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. Buy international transistor equivalents guide bernard babani publishing radio and electronics books by michaels, adrian isbn. I recently had within a few weeks of each other both a dunlop hendrix fuzz face mini, with bc108cs and a foxrox hot silicon with bc109s. General purpose small signal npn bipolar transistor features silicon npn hermetically sealed to18 screening options available vcbo collector base continuous voltage bc017 bc108, bc109 vceo collector emitter continuous voltage with zero base current bc107 bc108, bc109. Everyday low prices and free delivery on eligible orders. The complementary pnp transistor to the bc109 is the bc179. I dont know if they were attempting to get in the same ballpark, i found the foxrox a bit more restrained and the hendrix a bit more aggressive. Multicomp bc109c bipolar transistor, npn, 25v, to18 1 piece.
Mosfets are, are a type of fet, and fets all operate via the field effect principal. Bc549c transistor the bc549c is an npn transistor belonging to a group of generalpurpose npn semiconductors consisting of bc547, bc548, and bc549. These transistors are utilised in audio frequency, and small signal directly coupled preamplifiers. Transistors can be packaged in many different packages, some examples are shown below. Oct 09, 2009 hey guys, i need a detailed datasheet for the bc109c transistor, and when i use beta should i choose btypical or work out betaaverage. The apidictor was designed in the early 1950s and contained three types of transistor, each of which could be of two specified types, but none of these are in general supply as of the early 2000s. Bc109 datasheet, equivalent, cross reference search. The generalpurpose range of transistors is a good substitute for basic noncritical audio applications, as these transistors are similar and equivalents to each other. How to choose a replacement for a bipolar transistor total. That is good practice when controlling a dc relay with any semiconductor. Semiconductor transistor, diode, ic cross reference. Bc109 series low power bipolar transistors page 2 080406 v1. The bigger the package is, the more power the transistor can handle.
Bc107 datasheet, equivalent, cross reference search. But you could look in a catalogue for a silicon npn transistor with a voltage rating greater than 25 volts and a current capacity greater than 100 milliamps and a gain greater than 100 and the pinout sequence ebc and perhaps ft greater than 100mhz. Mar 10, 2009 but you could look in a catalogue for a silicon npn transistor with a voltage rating greater than 25 volts and a current capacity greater than 100 milliamps and a gain greater than 100 and the pinout sequence ebc and perhaps ft greater than 100mhz. Bc109 npn general purpose transistors 1997 sep 03 product specification supersedes data of 1997 jun 03 file under discrete semiconductors, sc04 philips semiconductors product specification npn general purpose transistors bc107. Continental device india limited datasheet catalog.
Semiconductor cross reference book paperback july, 1996. Mar 29, 2005 the bd type is a power transistor which need to be able to handle 2amp momentarily. Alternatively equivalent s to these transistors would help. The original transistor might need special ordering, or be discontinued and unavailable. The bc107, bc108 and bc109 are generalpurpose low power silicon npn bipolar junction transistors found very often in equipment and electronics booksarticles from europe, australia and many other countries. The complementary pnp types are re spectively the bc177. They are suitable for use in driver stages, low noise input stages and signal processing circuits of television receivers. Hi guys, im new here and im a still a student p im trying to build a doorphone project but i couldnt find any bc182 and bc212 transistors, can you tell me the equivalent transistors. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. Bc109 npn transistor complementary pnp, replacement. Transistor substitution desoldering and replacing a transistor takes very little time.
Bc109 cross reference electronic circuits, tv schematics, audio. Hello electrical engineers of reddit, it looks like the bc109c is outdated and therefore its price is actually increasing. There is a conductive channel, and a capacitive plate near it known as the gate. Aug 27, 2010 post the link my guess is the description is from someone that isnt a native english speaker a remote control is distinguished from a local control the local controls are physically located on the tv and must be operated in close proximity of the tv, i. The smd version of the bc109 is available as the mmbth10 sot23. Suitable for applications requiring low noise and good hfe linearity, eg. Can general purpose transistors like 2n3904, 2n4401, bc547, 2n2222, etc.
The links at left may help you to research your own replacement transistors. International transistor equivalents guide bernard babani. Can you guys help me find out the transistors that can. This is a pdf format of the well known hardware pinout book, which covers various computer, electrical and electronic item pinouts. If more than a maximum voltage rating is applied to a transistor, it can be permanently damaged. Alternatively equivalents to these transistors would help. The bc107, bc108 and bc109 are generalpurpose low power silicon npn bipolar junction transistors found very often in equipment and electronics booksarticles from europe, australia and many other countries from the 1960s. But your circuit does not seem to need any special types. The bc109 transistor might have a current gain anywhere between 200 and 800. Original transistor type original alternative type modern substitute alternative substitute. Aug 25, 2011 crossreferences are not magic, understanding of the circuit and a parametric search of the important parameters is much more reliable.