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Microchip Technology 1N6173A — Circuit Protection
Microchip Technology

1N6173A Zener TVS Diode – 273V Clamp, 1500W

MPN1N6173A
End of Life

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.

1N6173A datasheet
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Specifications

1N6173A Technical Specifications
ParameterValue
TypeZener
Mounting typeThrough Hole
Voltage - breakdown190V
Voltage - clamping (Max) @ ipp273V
Voltage - reverse standoff152V
Current - peak pulse (10/1000μs)5.5A
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-55°C~175°C(TJ)
PackageBulk
ApplicationsGeneral Purpose
CaseB, Axial
Bidirectional channels1

Product details

Zener TVS for 152V rail clamping

The 1N6173A is a unidirectional Zener TVS diode from Microchip Technology, designed to clamp transients on a 152V nominal rail. 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. Rated for 1500W peak pulse power, this part handles substantial surge energy in a through-hole axial package.

Active production — no obsolescence concern

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.

Frequently asked questions

Can 1N6173A be used for 190V breakdown applications?

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.