Written by Eli on Monday, August 06, 2018.
This post was originally written on April 4, 2013.
Building a Class B amplifier? Vetco has many options when it comes to complementary PNP – NPN transistors. Our NTE “MCP” series complementary transistor pairs are selected at the factory to have their gain (hfe) matched to within 10% of each other.
A pair of corresponding NPN and PNP transistors that have closely matched characteristics are ideal for Class B Amplifiers (used in the output stage) – Each NPN/PNP transistor evenly conducts half of the signal. Closely matched pairs of transistors are desireable here for waveform symmetry. Complementary transistors can also be used to create a reversible H-Bridge motor controller, and allow the current to flow to the motor evenly in both directions. For motor control applications, be sure select transistors with a collector current that is high enough to comfortably support your motor.
Our inventory of matched complementary pair transistors covers a wide range of applications and package styles, from inexpensive small signal transistors such as the NTE159MCP – a matched pair of 2N3904 (NPN) and 2N3906 (PNP) transistors, to large power transistors like NTE285MCP – a matched pair of NPN and PNP transistors with a current rating of 16A each !
Consider using Matched Complementary Pair Transistors from Vetco and NTE on your next project.