Tuesday, August 6, 2019

SMD TRANSISTORS INTRODUCTION


Transistor


Please refer in our earlier blogs


A voltage or current applied to one pair of the transistor's terminals changes the current flowing through another pair of terminals. Because the controlled (output) power can be much more than the controlling (input) power, the transistor provides amplification of a signal. Some transistors are packaged individually but many more are found embedded in integrated circuits.

The transistor is the fundamental building block of modern electronic devices, and its presence is ubiquitous in modern electronic systems.


 
Type of Transistors

 



Based upon the application any transistor can be used.


There are two types of standard transistors, NPN and 

PNP, with different circuit symbols. The letters refer to the layers of semiconductor material used to make the transistor. Most transistors used today are NPN because this is the easiest type to make from silicon. This page is mostly about NPN transistors and if you are new to electronics it is best to start by learning how to use these first. The leads are labeled base (B), collector (C) and emitter (E).



Soldering technique for transistor

 



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