Vishay General Semiconductor - Diodes Division, 1.5SMC TransZorb® series, Zener TVS diode, 1.5SMC56CA-/57T, bidirectional, 1500W peak pulse power, 47.8V standoff, DO-214AB (SMC) surface mount package.
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | 1.5SMC, TransZorb® |
| Mounting | Surface Mount |
| Voltage - breakdown | 53.2V |
| Voltage - clamping (Max) @ ipp | 77V |
| Voltage - reverse standoff | 47.8V |
| Current - peak pulse (10/1000μs) | 19.5A |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -65°C~150°C(TJ) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Applications | General Purpose |
| Case | DO-214AB, SMC |
| Bidirectional channels | 1 |
The 1.5SMC56CA-E3/57T: That 1500W rating means it can absorb a single 19.5A pulse clamped at 77V without failing — a common spec for protecting 48V bus lines, industrial control inputs, or telecom ports against lightning-induced surges and inductive load dumps.
That 77V ceiling is the voltage the protected circuitry must survive; if your downstream components are rated for 80V or higher, this clamp gives you margin.
The 1500W peak pulse power handles surge events like lightning-induced spikes or inductive load dumps.