The 1.5SMC24A-M3/9AT: That 1500 W rating means it can clamp a 45.2 A surge (Ipp) to 33.2 V max, protecting downstream silicon from transients like inductive kickback or lightning-coupled spikes on a 20.5 V nominal rail. The reverse standoff voltage is 20.5 V — the rail it sits on should never exceed this in normal operation, or the diode starts conducting leakage. Breakdown min is 22.8 V, so the avalanche triggers cleanly above the rail voltage with margin for tolerance.
1.5SMC24A-M3/9AT Vishay TVS, 1500W, 20.5V Standoff, DO-214AB
MPN1.5SMC24A-M3/9AT
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Vishay General Semiconductor - Diodes Division 1.5SMC, TransZorb® series, Zener TVS diode, 1500W peak pulse, 20.5V reverse standoff, 33.2V clamp, 45.2A Ipp, DO-214AB SMC, Tape & Reel.
$0.3333Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | 1.5SMC, TransZorb® |
| Mounting | Surface Mount |
| Voltage - breakdown | 22.8V |
| Voltage - clamping (Max) @ ipp | 33.2V |
| Voltage - reverse standoff | 20.5V |
| Current - peak pulse (10/1000μs) | 45.2A |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -65°C~150°C(TJ) |
| Package | Tape & Reel (TR) |
| Applications | General Purpose |
| Case | DO-214AB, SMC |
| Unidirectional channels | 1 |
Product details
Frequently asked questions
What is the clamping performance of the 1.5SMC24A-M3/9AT?
The reverse standoff is 20.5 V, and breakdown triggers at a minimum of 22.8 V.