This post explains for the transistor.
The Part Number is 13005A, 3DD13005A.
The function of this semiconductor is NPN Silicon Transistor.
The package is TO-220 Type
Manufacturer: ETC
Preview images :
Description
13005A is 400V, 4A, NPN Silicon Transistor. A 400V, 4A NPN silicon transistor refers to a specific type of bipolar junction transistor (BJT) that operates as an NPN (Negative-Positive-Negative) device, with a maximum voltage rating of 400 volts and a maximum current handling capacity of 4 amperes.
NPN silicon transistors are commonly used in a wide range of electronic circuits, such as power supplies, audio amplifiers, motor control circuits, and general-purpose switching applications. They provide amplification, switching, and control functions within electronic devices and circuits.
Pinouts:
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 700 V
2. Collector to Emitter Voltage: Vceo = 400 V
3. Emitter to Base Voltage: Vebo = 9 V
4. Collector Current: Ic = 4A
5. Total Dissipation : Pc = 70 W
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C
13005A PDF Datasheet