This post explains for the transistor D1762.
The Part Number is 2SD1762.
The function of this semiconductor is 50V, 3A, NPN Transistor .
The package is TO-220FP Type
Manufacturer: Rohm
Preview images :
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Description
This is 50V, 3A, Silicon NPN Power Transistor.
Features
1. Low VCE(sat), VCE(sat) = 0.5V (Typ.) (IC / IB = 2A / 0.2A)
2. Complements the 2SB1184 / 2SB1243 / 2SB1185.
3. Low collector saturation voltage
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Applications:
1. For low frequency power amplifier applications