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. Mps2222a npn transistor complementary pnp, replacement. World transistor equivalents data az by eca author 4. Switching time equivalent test circuits scope rise time triac etc. It was originally made in the to18 metal can as shown in the picture the 2n2222 is considered a very common transistor, and is used as an exemplar. The mps2222a is manufactured in a plastic to92 case.
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. The external resistors set an operating bias on the base to the transistor and limit current from the ac signal. The 2n2222 is a common npn bipolar junction transistor bjt used for general purpose lowpower amplifying or switching applications. Semiconductor transistor, diode, ic cross reference. Mps2222, pn2222, kn2222, ktn2222 replacement and equivalent transistor for the 2n2222 you can replace the 2n2222 with the 2n2221a, 2n2222a or nte123a. Understanding transistor cross reference, equivalent.
Transistor equivalents for the substitution of modern. Texas instruments transistor and diode databook 1st ed 1973 datasheets for diodes from 1n251 on and transistors from 2n117 on acrobat 7 pdf 34. Crossreferences to 2n2222nte123 npn transistors for the norcal 2n2222 building contest, you are allowed to use only 2n2222s or the nte ecg equivalents. Original transistor type original alternative type modern substitute alternative substitute. All about 2n2222 transistor and its circuit diagrams. Tt2222 transistor datasheet color tv horizontal deflection, tt2222 datasheet, tt2222 pdf, pinout, tt2222 replacement, tt2222 equivalent, tt2206 manual. Here is an image showing the pin diagram of the this transistor. This is a schematic diagram for a circuit that uses an npn transistor as a switch that turns an led on or off.
One bag had 97 and the other bag had 92 transistors. It is shown as a diode for the be pn junction and a current source for the ce junction. In this tutorial well introduce you to the basics of the most common transistor around. The switch is on when the base is saturated so that collector current can flow without restriction. P2n2222 which has alike specifications excluding lower max collector current ic. Free transistor circuits books download ebooks online. 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.
Transistor cross reference, equivalent and specification is very important for every electronic repairer the importance of transistor cross reference, datasheet, equivalent and specification. Symbol parameter conditions value unit rthja thermal resistance from junction to ambient note 1 500 kw. I have use bc547 for a project water level indicator. Cross reference electronic circuits, tv schematics, audio. I have seen many circuits using the 2n2222 transistor correct me if it isnt one. Theyre critical as a control source in just about every modern circuit. This is a pdf format of the well known hardware pinout book, which covers various computer, electrical and electronic item pinouts.
It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds. Electrically similar transistors in a to92 package. Characteristics tj 25 c unless otherwise specified. Alternatives for the 2n2222 are now commonly available in to92 packaging e. 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. Transistor uses, transistor rules, common emitter circuit, small signal amplification, fieldeffect transistors, jfet operating regions. 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. 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.
Tt2222 transistor datasheet color tv horizontal deflection. 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. Npn switching transistor mmbt2222a thermal characteristics note 1. The transistor is off when theres no bias voltage or when the bias voltage is less than 0. What is the difference between bc547 and 2n2222a transistor. 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. Simple transistor switching example should show led off. All electronic repairers should know how to read the transistor cross reference equivalent book if they want to succeed in electronic repairs.
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