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onsemi 1N6289ARL4 — Circuit Protection

1N6289ARL4 onsemi Zener TVS Diode 1500W DO-201AD Obsolete

MPN1N6289ARL4
Obsolete

onsemi Mosorb™ series, Zener TVS diode, 1N6289ARL4, 1500 W peak pulse power, 53.2 V breakdown min, DO-201AD axial through-hole package.

onsemi 1N6289ARL4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1N6289ARL4 specifications
ParameterValue
TypeZener
SeriesMosorb™
MountingThrough Hole
Voltage - breakdown53.2V
Voltage - clamping (Max) @ ipp77V
Voltage - reverse standoff47.8V
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

Zener TVS — 1500 W surge clamp in an axial lead

The 1N6289ARL4 is an onsemi Mosorb™ Zener TVS diode designed to clamp transient overvoltages on a 47.8 V nominal rail.

onsemi lists the 1N6289ARL4 as Obsolete.

Breakdown voltage and clamping performance

The reverse standoff voltage is 47.8 V — the rail voltage below which the diode does not conduct leakage. This is a unidirectional device, so it protects one polarity; for AC or bidirectional rails you would need two parts or a bidirectional TVS.

The DO-201AD axial package is a through-hole form factor with two leads exiting opposite ends of the body. The 0.050-inch lead diameter and 1.0-inch body length are standard for this power class; the hole diameter and pad spacing on the PCB must match the lead span. Through-hole mounting gives a robust mechanical anchor for high-vibration environments, but it adds an assembly step compared to surface-mount TVS diodes. The supplier device package is Axial — no special heatsink is required for the 1500 W pulse rating, but the board copper area around the lead pads helps conduct heat from repetitive surges.

Frequently asked questions

How can I order the 1N6289ARL4 or check stock?

The 1N6289ARL4 is obsolete per onsemi. We source it through our independent supply network — submit an RFQ with your target quantity and we will confirm availability and current pricing. No stock-holding claim is made; every order is sourced and quoted to your BOM line.

What is a suitable replacement for the 1N6289ARL4?

onsemi has not published an official successor for the 1N6289ARL4. For a pin-compatible through-hole Zener TVS with the same 1500 W rating and 47.8 V standoff, look at the 1N6289A series in DO-201AD — the 'A' suffix denotes 5 % tolerance on breakdown voltage. The 1N6289ARL4 is the Tape & Reel variant; the bulk-pack 1N6289A (without RL4) may be easier to source. Confirm the breakdown and clamping voltages match your protection threshold before substituting.