This is one of the transistor types.
Part Number : B817, 2SB817
Function : 140V/12A/ AF 60W Output Applications
Package : TO-3PB Type
Manufactures : Sanyo Semicon Device
The descriptions in parentheses are for the B817 only : other descriptions than those in parentheses are common to the 2SB817 and 2SD1047.
1.Capable of being mounted easily because of onepoint fixing type plastic molded package (Interchangeable with TO-3).
2. Wide ASO because of on-chip ballast resistance.
3. Good depenedence of fT on current and excellent high frequency responce.
Absolute Maximum Ratings at Ta = 25°C
1. Collector-to-Base Voltage : VCBO = 160 V
2. Collector-to-Emitter Voltage : VCEO = 140 V
3. Emitter-to-Base Voltage : VEBO = 6 V
4. Collector Current : IC = 12 A
5. Collector Current (Pulse) : ICP = 15 A
6. Collector Dissipation : PC = 100 W