NEC 2SD1780 Transistor Specifications
Technical specifications and cross-reference data for the NEC 2SD1780 NPN transistor used in Honda ECU hardware circuits.
The NEC 2SD1780 is a silicon NPN power transistor frequently utilized in Honda ECU hardware circuits.
Technical Specifications
The following table outlines the primary electrical characteristics and pin configuration for the 2SD1780.
| Parameter | Specification |
|---|---|
| Type | NPN |
| Collector Current (Ic) | 2 A |
| Collector-Emitter Voltage (Vceo) | 50 V |
| DC Current Gain (hFE) | 800 â 3200 |
| Pin Configuration | E-C-B (1-2-3) |
Note
Pin configuration is defined as Pin 1: Emitter, Pin 2: Collector, Pin 3: Base.
Cross-Reference
If the original NEC 2SD1780 is unavailable, the Panasonic 2SD2178 is a suitable functional replacement. This component is commonly available through major electronics distributors such as Digi-Key.
Important
Always verify the datasheet of any replacement component against the specific circuit requirements of the ECU board before installation to ensure compatibility with existing board traces and thermal dissipation needs.