View 2n4403 datasheet:

2N4403 MMBT4403 C E C TO-92 B SOT-23 B E Mark: 2T PNP General Purpose Amplifier This device is designed for use as a general purpose amplifier and switch requiring collector currents to 500 mA. Absolute Maximum Ratings* TA = 25°C unless otherwise noted Symbol Parameter Value Units VCEO Collector-Emitter Voltage 40 V VCBO Collector-Base Voltage40V VEBO Emitter-Base Voltage 5.0 V ICCollector Current - Continuous600mA Operating and Storage Junction Temperature Range -55 to +150 TJ, T °C stg *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 factory should be consulted on applications inv