This post explains for the PNP Transistor.
The Part Number is AD149.
The package is TO-3 pin type.
The function of this semiconductor is 30V, 3.5A, PNP Transistor.
Manufacturer: VALVO
Image
Description
AD149 is 30V, 3.5A, PNP Transistor.
Pinouts:
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 50 V
2. Collector to Emitter Voltage: Vceo = 30 V
3. Collector Current: Ic = 3.5A
4. Total Dissipation : Ptot = 20 W
AD149 PDF Datasheet
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