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onsemi 1N6291ARL4 — Circuit Protection

1N6291ARL4 TVS Diode – onsemi Mosorb™, 1500W, Obsolete

MPN1N6291ARL4
Obsolete

onsemi Mosorb™ series, Zener TVS diode, 1N6291ARL4, 1500W peak pulse power, 58.1V reverse standoff, DO-201AD axial package, through-hole mount.

$1.0500Ref. price · indicative, final on quote
onsemi 1N6291ARL4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1N6291ARL4 specifications
ParameterValue
TypeZener
SeriesMosorb™
MountingThrough Hole
Voltage - breakdown64.6V
Voltage - clamping (Max) @ ipp92V
Voltage - reverse standoff58.1V
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

1500W Zener TVS in DO-201AD axial

It clamps at 92V max with a 58.1V reverse standoff, making it a fit for 48V-60V rail protection in industrial and telecom gear.

onsemi lists the 1N6291ARL4 as Obsolete. For BOM lines needing this exact order code, supply is limited to existing distributor and broker inventory — sourced per RFQ against the required quantity.

Breakdown and clamping for 58V rails

Minimum breakdown voltage is 64.6V, clamping at 92V at peak pulse current. The 1500W rating gives a 16A Ipp margin on a 58V nominal rail — enough for secondary surge protection in AC-DC stages or DC bus inputs.

Frequently asked questions

How can I order 1N6291ARL4 or check stock?

The 1N6291ARL4 is obsolete per onsemi. We source it through our independent supply network — submit an RFQ with your target quantity for a current availability and price check. No stock-holding claim is made; every quote is order-specific.

Is 1N6291ARL4 a Zener diode or a TVS diode?

It is a Zener-type TVS diode — the Mosorb™ series uses Zener avalanche technology for transient suppression. The listed type is Zener, and it is applied as a unidirectional TVS clamp.

What is the difference between 1N6291ARL4 and 1N6291A?

The 1N6291ARL4 suffix indicates Tape & Reel packaging. The 1N6291A base part shares the same electrical ratings (58.1V standoff, 64.6V breakdown, 92V clamp, 1500W). The only difference is the reel format — the ARL4 variant is supplied on tape for automated insertion.