This post explains for the transistor.
The Part Number is D1691, 2SD1691.
The package is TO-126F Type.
The function of this semiconductor is 60V, 5A, NPN Transistor.
Manufacturer: NEC
Images
Description
The D1691 is Low Vce(sat) transistor which has a large current capability and wide SOA. It is suitable for DC-DC converter, or driver of solenoid or motor.
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Features
1. Low Collector Saturation voltage
2. Large Current
3. High Total Power Dissipation : Pt = 1.3 W
4. Complementary to 2SB1151
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Absolute maximum ratings ( Ta=25°C )
1. Collector to Base Voltage: Vcbo = 60 V
2. Collector to Emitter Voltage: Vceo = 60 V
3. Emitter to Base Voltage: Vebo = 7.0 V
4. Collector Current: Ic = 5.0 A
5. Total Dissipation : Pc = 1.3W
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C
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D1691 PDF Datasheet
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