View 2sc4547 datasheet:

Ordering number:EN3712 NPN Planar Silicon Darlington Transistor 2SC4547 85V/3A Driver Applications Applications Package Dimensions · Suitable for use in switching of L load (motor unit:mm drivers, printer hammer drivers, relay drivers). 2010C [2SC4169] 10.2 4.5 Features 3.6 5.1 1.3 · High DC current gain. · Large current capacity and Wide ASO. · Contains Zener diode of 95± 10V between collector and base. · Uniformity in collector-to-base voltage due to 1.2 adoption of accurate impurity diffusion process. · High inductive load handling capability. 1 : Base 0.8 0.4 2 : Collector 1 2 3 3 : Emitter JEDEC : TO-220AB 2.55 2.55 EIAJ : SC-46 Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Volt