This post explains for the semiconductor D401A, 2SD401A.
The Part Number is D401A. The package is TO-220 type.
The function of this semiconductor is NPN Transistor.
Manufacturers : Mospec Semiconductor
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Description :
It designed for use in general purpose power amplifier, vertical output apllication.
Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage : Vcbo = 200 V
2. Collector to Emitter Voltage : Vceo = 150 V
3. Emitter to Base Voltage : Vebo = 5.0 V
4. Collector Current : Ic = 2.0 A
5. Total Dissipation : Pd = 25 W
6. Junction Temperature : Tj = 150°C
7. Storage Temperatue : Tsg = -55 ~ +150°C
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Features
1. Collector-Emitter Voltage : Vceo = 150V(Min)
2. DC Current Gain : hFE = 40 ~ 200 @Ic = 400mA
3. Complementary to PNP 2SB546A
D401A Datasheet
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