2n4953.pdf datasheet:

2N4953NPN General Purpose Amplifier This device designed for use as general purpose amplifier and switches requiring collector currents to 500mA. Sourced from Process 10.TO-9211. Emitter 2. Collector 3. BaseNPN Epitaxial Silicon Transistor Absolute Maximum Ratings* Ta=25C unless otherwise noted Symbol Parameter Value UnitsVCEO Collector-Emitter Voltage 30 VVCBO Collector-Base Voltage 60 VVEBO Emitter-Base Voltage 5.0 VIC Collector Current - Continuous 1.0 ATJ, TST Operating and Storage Junction Temperature Range -55 ~ +150 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 factory should be consulted on applications involving pulsed or low duty cycle operati