The 2SD1893 is a NPN silicon darlington transistors mainly used for audio amplification and switch purpose. This transistor provides exponential current gain and low saturation voltage because of the triple diffusion planar structure. In this article you can get the Pinout, features, characteristics and application details.
Pinout

Transistor Overview
- This transistor is a type Silicon NPN triple diffusion planar Darlington
- The Complementary Pair of 2SD1893 is 2SB1253 (PNP Darlington transistor)
- Designed in the package of TO-220 style. This design can easy heat-sink mounting with a single screw
Charecteristics
| Parameter | Symbol | Rating | Unit |
| Collector Base Voltage | VCBO | 130 | V |
| Collector Emitter Voltage | VCEO | 110 | V |
| Emitter Base Voltage | VEBO | 5 | V |
| Continuous Collector Current | IC | 6 | A |
| Peak Collector Current | ICP | 10 | A |
| Collector Power Dissipation | PC | 50 | W |
| Junction Temperature | Tj | โ55 to +150 | ยฐC |
| Storage Temperature | Tstg | โ55 to +150 | ยฐC |
Applications
- The high gain and low saturation voltage is the main feature of this transistor, so it can able to amplify the audio signals efficiently.
- Due to Fast switching property, it can use in switching circuits needs high speed switching. This transistor can able to handle up to 6 A current so this transistors are the perfect choice for relay driver and motor driver transistors.




