Vishay General Semiconductor, TransZorb® series, Zener TVS diode, 1.5KE12A-/54, 1500W peak pulse, 10.2V reverse standoff, 89.8A Ipp, DO-201AA axial, through-hole.
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | TransZorb® |
| Mounting | Through Hole |
| Voltage - breakdown | 11.4V |
| Voltage - clamping (Max) @ ipp | 16.7V |
| Voltage - reverse standoff | 10.2V |
| Current - peak pulse (10/1000μs) | 89.8A |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -55°C~175°C(TJ) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Applications | General Purpose |
| Case | DO-201AA, DO-27, Axial |
| Unidirectional channels | 1 |
The 1.5KE12A-E3/54: It clamps a 10.2V reverse standoff rail to a maximum of 16.7V when hit with 89.8A of surge current — the clamping voltage is the number that tells you whether the downstream silicon survives. Breakdown starts at 11.4V minimum, so a 12V bus that sags to 11.5V during a transient is still within the safe window; the device does not conduct until the avalanche threshold is crossed.
It is supplied in a DO-201AA (DO-27) axial through-hole package.