The MAT03S from Analog Devices is a RF Transistor with Voltage - Collector Base (Vcbo) 36 V, Voltage - Emitter Base 36 V, Collector Current (Ic) 20 mA, Power Dissipation (Pdiss) 0.5 W, Junction Temperature (Tj) 150 Degree C. More details for MAT03S can be seen below.