Taiwan Semiconductor Corporation 1.5SMC series Zener TVS diode, bidirectional, 1.5SMC27CA, 1500W peak pulse power, 23.1V reverse standoff, 37.5V clamping, DO-214AB (SMC) surface mount, Tape & Reel.
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | 1.5SMC |
| Mounting | Surface Mount |
| Voltage - breakdown | 25.7V |
| Voltage - clamping (Max) @ ipp | 37.5V |
| Voltage - reverse standoff | 23.1V |
| Current - peak pulse (10/1000μs) | 42A |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -55°C~150°C(TJ) |
| Package | Tape & Reel (TR) |
| Applications | Telecom |
| Case | DO-214AB, SMC |
| Bidirectional channels | 1 |
The 1.5SMC27CA: That power rating means it absorbs a single 42 A surge pulse without failing — the clamping voltage holds at 37.5 V max while the transient current flows. This makes it a fit for 24 V telecom buses where the normal operating voltage sits below 23 V and the protection triggers on a lightning or inductive kick transient.