Avitech BD-139 And BD-140 NPN Transistor  (Number of Transistors 10)

it is a pack of bd140 bd139 NPN PNP Transistors For High-speed Switching Features: 1.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.