View 2n4124 datasheet:

2N4124 MMBT4124 C E TO-92 C B B SOT-23 E Mark: ZC NPN General Purpose Amplifier This device is designed as a general purpose amplifier and switch. The useful dynamic range extends to 100 mA as a switch and to 100 MHz as an amplifier. Absolute Maximum Ratings* TA = 25°C unless otherwise noted Symbol Parameter Value Units VCEO Collector-Emitter Voltage 25 V VCBO Collector-Base Voltage 30 V VEBO Emitter-Base Voltage 5.0 V IC Collector Current - Continuous 200 mA Operating and Storage Junction Temperature Range -55 to +150 TJ, Tstg °C *These ratings are limiting values above which the serviceability of any semiconductor device may be impaired. NOTES: 1) These ratings are based on a maximum junction temperature of 150 degrees C. 2) These are steady state limits. The fact