View 2sa1778 datasheet:

Ordering number:EN3481 PNP Epitaxial Planar Silicon Transistor 2SA1778 VHF Converter, Local Oscillator Applications Features Package Dimensions · High power gain (PG=13dB typ ; f=0.4GHz). unit:mm · High cutoff frequency (fT=1.2GHz typ). 2018A · Low Cob (Cob=1.0pF typ). [2SA1778] · Complementary pair with the 2SC4269. 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 –15 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 Characteristics at Ta = 25?C Ratings Parameter Symbol Co