Vishay General Semiconductor - Diodes Division, 1.5SMC series TransZorb®, TVS Zener diode, bidirectional, 1 channel, 1500W peak pulse, 23.1V standoff, 37.5V clamp, DO-214AB SMC surface mount.
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | 1.5SMC, TransZorb® |
| Mounting | Surface Mount |
| Voltage - breakdown | 25.7V |
| Voltage - clamping (Max) @ ipp | 37.5V |
| Voltage - reverse standoff | 23.1V |
| Current - peak pulse (10/1000μs) | 40A |
| 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 1.5SMC27CA-E3/57T: The reverse standoff of 23.1V means it sits across a 24V nominal rail and stays transparent until a surge pushes the line past the breakdown threshold at 25.7V min. No need to series two unidirectional parts for AC or bipolar signal lines.
DO-214AB (SMC) body, also designated SMCJ in some land-pattern references.
The unidirectional variant 1.5SMC27A-/57T shares the same DO-214AB footprint, standoff voltage, and clamping specs — the difference is a single bidirectional channel versus a single unidirectional channel. For bidirectional protection on the same rail, the 1.5SMC27CA is the correct choice.