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onsemi 1N6277ARL4 — Circuit Protection

1N6277ARL4 Zener TVS Diode – onsemi Mosorb™ 1500W DO-201AD

MPN1N6277ARL4
Obsolete

onsemi Mosorb™ series, Zener TVS diode, 1N6277ARL4, 1500W peak pulse power, 15.3V reverse standoff, 25.2V clamping, DO-201AD axial package, -65°C to 175°C junction temperature.

onsemi 1N6277ARL4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1N6277ARL4 specifications
ParameterValue
TypeZener
SeriesMosorb™
MountingThrough Hole
Voltage - breakdown17.1V
Voltage - clamping (Max) @ ipp25.2V
Voltage - reverse standoff15.3V
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C~175°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseDO-201AD, Axial
Unidirectional channels1

Product details

Transient protection for 15V rails

It clamps transients at 25.2V maximum when the surge current reaches Ipp, protecting downstream circuitry on a 15.3V nominal rail. The DO-201AD axial package supports through-hole mounting, suited for high-reliability power supplies, industrial controls, and telecom line cards where surge immunity is specified.

Minimum breakdown voltage is 17.1V, providing a 1.8V guard band above the 15.3V standoff. The 25.2V clamp at peak pulse current ensures the protected bus sees no more than 25.2V during a surge event. No power line protection feature is integrated — this device is a standalone TVS, not a combination protector.

Obsolete status and sourcing path

onsemi has marked the 1N6277ARL4 as Obsolete. Buyers should confirm BOM fit and source remaining inventory through authorized channels or verified stock. For new designs, evaluate current onsemi TVS families with equivalent 1500W rating and DO-201AD footprint.

Frequently asked questions

What is the replacement for 1N6277ARL4?

No official replacement is listed in the available records. For a functional equivalent, look for a 1500W unidirectional TVS in DO-201AD with a 15.3V standoff and 25.2V clamp. onsemi's current Mosorb™ or other TVS families with those ratings are candidates — verify the breakdown voltage window and pulse derating curve against your application.