Unidirectional TVS clamping at 28 V standoff
The 1.5SMCJ28A: When triggered, the clamping ceiling is 45.4 V at the 33 A peak pulse current on a 10/1000 µs waveform — so downstream circuitry sees no more than 45.4 V during the surge event.
Diotec 1.5SMCJ28A TVS Diode, 1500W 28V SMC
MPN1.5SMCJ28A
Active
Diotec Semiconductor 1.5SMCJ28A unidirectional TVS diode, 1500W peak pulse, 28V reverse standoff, 31.1V min breakdown, 45.4V max clamping @ 33A, DO-214AB SMC package, surface mount.
$0.9158Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Zener |
| Mounting | Surface Mount |
| Voltage - breakdown | 31.1V |
| Voltage - clamping (Max) @ ipp | 45.4V |
| Voltage - reverse standoff | 28V |
| Current - peak pulse (10/1000μs) | 33A |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -50°C~150°C(TJ) |
| Package | Strip |
| Applications | General Purpose |
| Case | DO-214AB, SMC |
| Unidirectional channels | 1 |
Product details
Frequently asked questions
What do the standoff and clamping voltage ratings mean for my circuit?
The 28 V standoff is the maximum working voltage the line can sit at continuously without the TVS conducting; the 31.1 V minimum breakdown is the threshold where it starts to clamp. Once a transient exceeds that threshold, the 45.4 V maximum clamping voltage at 33 A peak pulse is what the protected load actually sees during the event — lower clamping voltage means less stress on the downstream IC.