View 2n2905a 2n2907a datasheet:

2N2905A 2N2907A ® SMALL SIGNAL PNP TRANSISTORS DESCRIPTION The 2N2905A and 2N2907A are silicon Planar Epitaxial PNP transistors in Jedec TO-39 (for 2N2905A) and in Jedec TO-18 (for 2N2907A) metal case. They are designed for high speed saturated switching and general purpose applications. TO-18 TO-39 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCBO Collector-Base Voltage (IE = 0) -60 V VCEO Collector-Emitter Voltage (IB = 0) -60 V VEBO Emitter-Base Voltage (IC = 0) -5 V IC Collector Current -0.6 A ICM Collector Peak Current (tp < 5 ms) -0.8 A P tot Total Dissipation at Tamb ? 25 oC for 2N2905A 0.6 W for 2N2907A 0.4 W at TC ? 25 oC 3 W for 2N2905A 1.8 W for 2N2907A o Tstg Storage Temperature -65 to 175 C o T Max. Opera