View 2sc4737 datasheet:

Ordering number:ENN3880A NPN Epitaxial Planar Silicon Transistor 2SC4737 50V/2A Driver Applications Applications Package Dimensions · Suitable for use in switching of L load (motor unit:mm drivers, printer hammer drivers, relay drivers). 2084B [2SC4737] 4.5 Features 1.9 2.6 10.5 1.2 1.4 · High DC current gain. · Wide ASO. · On-chip Zener diode of 60 ± 10V between collector and base. · Uniformity in collector-to-base breakdown voltage. 1.2 · High inductive load handling capability. 0.5 1.6 0.5 1 2 3 1 : Emitter 2 : Collector 3 : Base 2.5 2.5 SANYO : FLP Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO 50 V With a low-voltage diode (60± 10V) Collector-to-Emitter Voltage VCEO