Vishay General Semiconductor - Diodes Division, 1.5SMC TransZorb® series, Zener TVS diode, 1.5SMC51A-/9AT, 1500W peak pulse, 43.6V reverse standoff, DO-214AB (SMC), Tape & Reel.
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | 1.5SMC, TransZorb® |
| Mounting | Surface Mount |
| Voltage - breakdown | 48.5V |
| Voltage - clamping (Max) @ ipp | 70.1V |
| Voltage - reverse standoff | 43.6V |
| Current - peak pulse (10/1000μs) | 21.4A |
| 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 |
The 1.5SMC51A-E3/9AT: The cathode band on the body marks the unidirectional orientation — the anode is the larger tab, which also serves as the primary heat path into the PCB copper pour. No power-line protection feature — this is a signal or low-voltage DC bus clamp, not an AC mains protector.
Supplied in Tape & Reel (TR) — the /9AT suffix indicates the 13-inch reel quantity.
Breakdown starts at 48.5V min, and it clamps surge current to 70.1V max — protecting a 48V telecom bus or a 36V industrial supply with typical 60V-rated downstream components.