View 2sa1815 datasheet:

Ordering number:EN4625 PNP Epitaxial Planar Silicon Transistor 2SA1815 FM, RF, MIX, IF Amplifier, High-Frequency General-Purpose Amplifier Applications Features Package Dimensions · High power gain : PG=25dB (f=100MHz). unit:mm · High cutoff frequency ; fT=750MHz typ. 2018A · Low collector-to-emitter saturation voltage. [2SA1815] · Complementary pair with the 2SC4432. C : Collector B : Base E : Emitter SANYO : CP Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO –15 V Collector-to-Emitter Voltage VCEO –12 V Emitter-to-Base Voltage VEBO –3 V Collector Current IC –50 mA Collector Dissipation PC 250 mW Junction Temperature Tj 150 ?C Storage Temperature Tstg –55 to +150 ?C Electrical Chara