Microchip Technology 1N6173A, Zener TVS diode, 152V reverse standoff, 190V min breakdown, 273V clamp at 5.5A, 1500W peak pulse, through-hole axial package, -55°C to 175°C junction range.
| Parameter | Value |
|---|---|
| Type | Zener |
| Mounting | Through Hole |
| Voltage - breakdown | 190V |
| Voltage - clamping (Max) @ ipp | 273V |
| Voltage - reverse standoff | 152V |
| Current - peak pulse (10/1000μs) | 5.5A |
| Power - peak pulse | 1500W (1.5kW) |
| Power line protection | No |
| Operating temperature | -55°C~175°C(TJ) |
| Package | Bulk |
| Applications | General Purpose |
| Case | B, Axial |
| Bidirectional channels | 1 |
Its 273V maximum clamping voltage at 5.5A peak pulse current (10/1000µs waveform) defines the protection ceiling — downstream equipment must survive that peak without damage.
The through-hole axial package (B, Axial) is a mature, widely stocked form factor. Lead time is confirmed at quote time against the BOM quantity — typical for active Microchip TVS devices in this package family.
The minimum breakdown voltage is 190V, so the part will begin conducting at or above that level. For a rail that sits at 152V nominal, the 190V breakdown provides adequate margin — the TVS stays off during normal operation and only clamps during overvoltage events.