This is a kind of NPN transistor.
Part Number: D400, 2SD400
25V, 1A, NPN Transistor
Manufacturer: Sanyo Semicon Device
See the preview image and the PDF file for more information.
This is NPN Epitaxial Planar Silicon Transistor.
Absolute Maximum Ratings at Ta = 25 °C
1. Collector to Base Voltage: Vcbo = 25V
2. Collector to Emitter Voltage: Vceo = 25V
3. Emitter to Base Voltage: Vebo = 5V
4. Collector Current: Ic = 1A
5. Collector Power Dissipation : Pc = 0.9 W
6. Junction Temperature: Tj = 150’C
D400 Pinout :
1. Low-Frequency Power Amp, Electronic Governor