Electronic Spices Transistors Combo BC557 BC547 NPN PNP, 25 Pieces Each, 50 Pieces Electronic Components Electronic Hobby Kit

The transistors are silicone planar epitaxial NPN and PNP type transistors. 2.The transistors are specially designed for high-speed switching applications and feature useful current gain over a wide range of collector current low leakage currents and low saturation voltages.