View tip31-32 datasheet:

TIP31A/31C TIP32A/32B/32C COMPLEMENTARY SILICON POWER TRANSISTORS SGS-THOMSON PREFERRED SALESTYPES APPLICATION LINEAR AND SWITCHING INDUSTRIAL EQUIPMENT 3 2 1 DESCRIPTION The TIP31A and TIP31C are silicon epitaxial-base NPN transistors in Jedec TO-220 TO-220 plastic package, intented for use in medium power linear and switching applications. TIP32B is PNP power transistor.The complementary PNP types for TIP31A and TIP31C are TIP32A and TIP32C. INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit NPN TIP31A TIP31C PNP* TIP32A TIP32B TIP32C V Collector-Base Voltage (I = 0) 60 80 100 V CBO E V Collector-Emitter Voltage (I = 0) 60 80 100 V CEO B VEBO Emitter-Base Voltage (IC = 0) 5 V IC Collector Current 3 A I Collector Peak Current 5