Vishay General Semiconductor - Diodes Division, Automotive AEC-Q101 TransZorb® series, Zener TVS, 1.5KE220HE3/73, 1500W peak pulse, 175V reverse standoff, DO-201AA axial, through hole.
| Parameter | Value |
|---|---|
| Type | Zener |
| Series | Automotive, AEC-Q101, TransZorb® |
| Mounting | Through Hole |
| Voltage - breakdown | 198V |
| Voltage - clamping (Max) @ ipp | 344V |
| Voltage - reverse standoff | 175V |
| Current - peak pulse (10/1000μs) | 4.4A |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -55°C~175°C(TJ) |
| Package | Tape & Box (TB) |
| Applications | Automotive |
| Case | DO-201AA, DO-27, Axial |
| Unidirectional channels | 1 |
The 1.5KE220HE3/73: The 175 V reverse standoff means the device does not conduct appreciably below that DC voltage — it sits across the protected rail and only starts clamping when the transient exceeds the breakdown voltage (198 V minimum). A 344 V clamp at 4.4 A peak pulse means a 1500 W surge (10/1000 µs) is limited to that voltage; downstream components must withstand that clamp level for the pulse duration.