This post explains for the transistor.
The Part Number is 2D717, D717.
The function of this semiconductor is 70V, 10A, NPN Transistor.
The package is TO-3P(I)D Type
Manufacturer: Wing Shing Electronic
Preview images :
Description
D717 is 70V, 10A, NPN Transistor. Silicon NPN high frequency, high power transistors in a plastic envelope, primarily for use in audio and general purpose.
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 70 V
2. Collector to Emitter Voltage: Vceo = 70 V
3. Collector Current: Ic = 10 A
4. Collector Dissipation : Ptot = 80 W
D717 PDF Datasheet
