Cross reference electronic circuits, tv schematics, audio. So i just wanted to know can the bc148 be used as a general substitute for 2n2222 or is it just the case in this. Electrically similar transistors in a to92 package. Transistor cross reference, equivalent and specification is very important for every electronic repairer the importance of transistor cross reference, datasheet, equivalent and specification. 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.
The switch is on when the base is saturated so that collector current can flow without restriction. Here is an image showing the pin diagram of the this transistor. It is shown as a diode for the be pn junction and a current source for the ce junction. I have seen many circuits using the 2n2222 transistor correct me if it isnt one. Simple transistor switching example should show led off. Mps2222, pn2222, kn2222, ktn2222 replacement and equivalent transistor for the 2n2222 you can replace the 2n2222 with the 2n2221a, 2n2222a or nte123a. Original transistor type original alternative type modern substitute alternative substitute. Turn it around 180 degrees and their circuit is as they intended. Crossreferences to 2n2222nte123 npn transistors for the norcal 2n2222 building contest, you are allowed to use only 2n2222s or the nte ecg equivalents. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. Characteristics tj 25 c unless otherwise specified. Index glossary transistor selection guides transistor interchangeability transistor data sheets transistor chip characterization transistor quality and reliability information diode, third printing the transistor and diode data book since 1954, when texas instruments introduced the first silicon transistor to the marketplace, and later w. Understanding transistor cross reference, equivalent.
Alternatives for the 2n2222 are now commonly available in to92 packaging e. This is a pdf format of the well known hardware pinout book, which covers various computer, electrical and electronic item pinouts. 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. Transistor equivalents for the substitution of modern. Tt2222 transistor datasheet color tv horizontal deflection.
Theyre critical as a control source in just about every modern circuit. What is the difference between bc547 and 2n2222a transistor. This is a schematic diagram for a circuit that uses an npn transistor as a switch that turns an led on or off. General purpose transistors npn silicon maximum ratings rating symbol value unit collectoremitter voltage pn2222 pn2222a vceo 30 40 vdc collectorbase voltage pn2222 pn2222a vcbo 60 75 vdc emitterbase voltage pn2222 pn2222a vebo 5. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, base, and collector leads. Diodes and transistors pdf 28p this note covers the following topics.
Semiconductor transistor, diode, ic cross reference. However the pins order for p2n2222 is different from 2n2222. The external resistors set an operating bias on the base to the transistor and limit current from the ac signal. All about 2n2222 transistor and its circuit diagrams. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds.
Free transistor circuits books download ebooks online. The transistor is off when theres no bias voltage or when the bias voltage is less than 0. All electronic repairers should know how to read the transistor cross reference equivalent book if they want to succeed in electronic repairs. It was originally made in the to18 metal can as shown in the picture the 2n2222 is considered a very common transistor, and is used as an exemplar. One bag had 97 and the other bag had 92 transistors. The 2n2222 is a common npn bipolar junction transistor bjt used for general purpose lowpower amplifying or switching applications. The mps2222a is manufactured in a plastic to92 case. P2n2222 which has alike specifications excluding lower max collector current ic. I have use bc547 for a project water level indicator. Symbol parameter conditions value unit rthja thermal resistance from junction to ambient note 1 500 kw.
Switching time equivalent test circuits scope rise time triac etc. Bipolar power transistor selection guide january 2003 table of contents product page general purpose transistors horizontal deflection output transistors product page dpak d2pak sot223 ipak to126 todarlington transistors dpak ipak to126 to220 to220f to3p to3pf switching transistors dpak d2pak to92 to126. Mps2222a npn transistor complementary pnp, replacement. World transistor equivalents data az by eca author 4. Basic semiconductor physics, diodes, the nonlinear diode model, load line analysis, large signal diode models, offset diode model, transistors, large signal bjt model, load line analysis, small signal model and transistor amplification. Npn switching transistor mmbt2222a thermal characteristics note 1.