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onsemi 1N6274A — Circuit Protection

1N6274A onsemi Mosorb™ Zener TVS, 1500W, DO-201AD, Obsolete

MPN1N6274A
Obsolete

onsemi Mosorb™ series, Zener TVS diode, 1500W peak pulse power, 12.4V min breakdown, 11.1V reverse standoff, DO-201AD axial through-hole, -65°C~175°C junction temperature

$0.6700Ref. price · indicative, final on quote
onsemi 1N6274A datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1N6274A specifications
ParameterValue
TypeZener
SeriesMosorb™
MountingThrough Hole
Voltage - breakdown12.4V
Voltage - clamping (Max) @ ipp18.2V
Voltage - reverse standoff11.1V
Power - peak pulse1500W (1.5kW)
Power line protectionNo
Operating temperature-65°C~175°C(TJ)
PackageBulk
ApplicationsGeneral Purpose
CaseDO-201AD, Axial
Unidirectional channels1

Product details

1500W Zener TVS in DO-201AD axial

Its 12.4V minimum breakdown voltage and 11.1V reverse standoff make it suited for clamping transients on 12V nominal rails in industrial control, telecom, and power supply applications. The axial through-hole package allows manual insertion and rework, but the leaded form factor consumes board space and requires a drilled PCB — a consideration for compact or high-density designs.

18.2V clamp at peak current

The 1500W rating means the device can absorb a single 8/20 µs or 10/1000 µs pulse without failure, but repetitive surges require derating per the datasheet curve.

Obsolete — sourcing and replacement planning

onsemi lists the 1N6274A as Obsolete. No official successor is published under the same base number. Buyers should verify last-time-buy (LTB) windows with distributors or evaluate electrically similar Zener TVS diodes in the same DO-201AD or surface-mount footprint. The base product number 1N6274 (without 'A' suffix) has a slightly different breakdown tolerance — the 'A' denotes ±5% tolerance on breakdown voltage. Confirm the exact BOM requirement before substituting. No stock-holding claim — each order is sourced against your BOM quantity.

Frequently asked questions

How can I order 1N6274A or check stock?

Submit an RFQ with your target quantity. The 1N6274A is obsolete, so we source from remaining distributor inventory or verified broker channels on a per-order basis. Availability and pricing are confirmed at quote time — no automated stock figure applies.

What is the replacement for 1N6274A?

onsemi has not published a direct successor. Look for Zener TVS diodes with 1500W peak pulse power, 12.4V breakdown, and DO-201AD package from other manufacturers (e.g., Littelfuse, Vishay). The 'A' suffix indicates ±5% tolerance — verify the BOM voltage window before substituting.

What is the difference between 1N6274A and 1N6274?

The 'A' suffix denotes a ±5% tolerance on the breakdown voltage. The base 1N6274 typically has a wider ±10% tolerance. Both share the same 1500W rating, DO-201AD package, and electrical characteristics otherwise.