View 2sd1666 datasheet:

Ordering number : ENN3031A 2SB1133 / 2SD1666 PNP / NPN Triple Diffused Planar Silicon Transistors 2SB1133 / 2SD1666 Low-Frequency General-Purpose Amplifier Applications Features Package Dimensions • Wide ASO(Adoption of MBIT process). unit : mm • Micaless package facilitating easy mounting. 2041A • High reliability. [2SB1133 / 2SD1666] 4.5 10.0 2.8 3.2 2.4 1.6 1.2 0.7 0.75 1 2 3 1 : Base 2.55 2.55 2 : Collector Specifications 3 : Emitter ( ) : 2SB1133 2.55 2.55 SANYO : TO-220ML Absolute Maximum Ratings at Ta=25°C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO (-)60 V Collector-to-Emitter Voltage VCEO (-)60 V Emitter-to-Base Voltage VEBO (-)6 V Collector Current IC (-)3 A Collector Current (Pulse) ICP (-)8 A 2 W Collector Diss