View mmbta42 datasheet:

MMBTA42 ® SMALL SIGNAL NPN TRANSISTOR PRELIMINARY DATA Type Marking MMBTA42 A42 SILICON EPITAXIAL PLANAR NPN HIGH VOLTAGE TRANSISTOR MINIATURE SOT-23 PLASTIC PACKAGE FOR SURFACE MOUNTING CIRCUITS TAPE AND REEL PACKING THE PNP COMPLEMENTARY TYPE IS MMBTA92 APPLICATIONS SOT-23 VIDEO AMPLIFIER CIRCUITS (RGB CATHODE CURRENT CONTROL) TELEPHONE WIRELINE INTERFACE (HOOK SWITCHES, DIALER CIRCUITS) INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCBO Collector-Base Voltage (IE = 0) 300 V VCEO Collector-Emitter Voltage (IB = 0) 300 V V Emitter-Base Voltage (I = 0) 6 V EBO C I Collector Current 0.5 A C ICM Collector Peak Current 0.6 A Ptot Total Dissipation at TC = 25 oC 350 mW o Tstg Storage Temperature -65 to 150 C o Tj Max. Op