Hello friends, I hope you all are doing great. Today, I am going to share the new Small Transistors Library for Proteus . The small bipolar transistor is the workhorse of electronics: it switches relays, motors and LEDs from a microcontroller pin, amplifies weak signals, drives speakers and buffers outputs. Four parts cover most of what hobbyists and students ever need, and those are the four in this library. Updates Small Transistors Library for Proteus Latest version: V1.0 (November 2026, this tutorial) Other component libraries: C945 Transistor · PC817 Optocoupler · Relay Module · Resistor · 5 mm LED · Designer Colour LED · Push Button · Active Buzzer · Electrolytic Capacitor · Ceramic Capacitor · Tantalum Capacitor · Film Capacitor · 1N4007 Diode · Zener Diode · Schottky Diode · Superc ...