NEC 3P4M Thyristor 3A 400V TO-202AA
NEC 3P4M Thyristor 3A 400V TO‑202AA is a silicon controlled rectifier (SCR) designed for controlled rectification and switching applications in power electronics. This three‑terminal semiconductor device utilizes a P‑gate fully diffused SCR structure to provide reliable turn‑on control of AC or DC power circuits with an average on‑state current of up to 3 A and a repetitive peak off‑state voltage of 400 V. It is housed in a compact TO‑202AA through‑hole package, suitable for traditional PCB assembly and rugged enough for various industrial environments.
Features
- P-gate fully diffused construction for high sensitivity.
- 400 V repetitive peak off-state voltage rating.
- 3 A average on-state current with 4.7 A RMS capability.
- Extremely low gate trigger current of maximum 0.2 mA.
Specifications
| Parameter | Details |
|---|---|
| Model | 3P4M |
| Technology | P-Gate SCR (Thyristor) |
| Repetitive Peak Off-State Voltage | 400V |
| Non-Repetitive Peak Off-State Voltage | 500V |
| Average On-State Current | 3A |
| RMS On-State Current | 4.7A |
| Surge On-State Current | 65A (50 Hz) / 70A (60 Hz) |
| Gate Trigger Current | 0.2mA (max) |
| Gate Trigger Voltage | 0.8V (max) |
| On-State Voltage | 1.6V (max at 10A) |
| Holding Current | 5mA (max) |
| Junction Temperature | -40°C to +125°C |
| Package | TO-202AA (Radial Leads) |
Dimensions
Pin Configuration
| Pin No. | Connection | Function / Description |
|---|---|---|
| 1 | Cathode | Main current-carrying terminal |
| 2 | Anode | Main current-carrying terminal |
| 3 | Gate | Control terminal |
Applications
- AC power control and phase‑angle firing circuits.
- Motor speed controllers and power regulators.
- Controlled rectifiers in power supplies.
- Solid state switches for industrial and consumer electronics.
- Temperature and lighting control systems.
Package Contents
- 1 x NEC 3P4M Thyristor 3A 400V TO-202AA