The Powerex C451 is a silicon controlled rectifier designed for phase‑control applications such as power supplies, battery chargers, motor control, dimmers and VAR generators. It is an all‑diffused, Press‑Pak (Pow‑R‑Disc) device with low on‑state voltage and high di/dt and dv/dt ratings.
The document lists absolute maximum ratings, on‑state and blocking characteristics, thermal resistance data, gate parameters and typical surge suppression ratings. Ordering information and a part‑number table are also included.
| Average On‑State Current | 1400‑1500 A |
|---|---|
| Blocking Voltage Range | 500‑1800 V |
The C451 is rated for an average on‑state current of 1400 to 1500 amperes.