Skip to main content
onsemi 1.5KE91ARL4 — Circuit Protection
onsemi

1.5KE91ARL4 onsemi Zener TVS 1500W DO-201AD Obsolete

MPN1.5KE91ARL4
Obsolete

onsemi Mosorb™ Zener TVS, 1.5KE91ARL4, 1500W peak pulse power, 86.5V breakdown min, 77.8V reverse standoff, DO-201AD axial, Tape & Reel.

1.5KE91ARL4 datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

1.5KE91ARL4 Technical Specifications
ParameterValue
TypeZener
SeriesMosorb™
Mounting typeThrough Hole
Voltage - breakdown86.5V
Voltage - clamping (Max) @ ipp125V
Voltage - reverse standoff77.8V
Current - peak pulse (10/1000μs)12A
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 with 1500W pulse rating

The 1.5KE91ARL4 is an onsemi Mosorb™ Zener transient-voltage-suppression diode rated for 1500W peak pulse power (10/1000 µs waveform). The 86.5V minimum breakdown voltage and 77.8V reverse standoff define the clamping threshold for a 77.8 VDC rail — the TVS stays off below that line and clamps transients to 125V max at 12A peak pulse current.

Obsolete — plan replacement or last-time buy

onsemi lists the 1.5KE91ARL4 as Obsolete. For a BOM line that still needs this 77.8V standoff, 1500W rating in DO-201AD axial, the procurement path is either a last-time-buy from remaining distributor stock or a cross to a current-production TVS with matching peak pulse power and breakdown voltage.

DO-201AD axial package and temp range

Through-hole DO-201AD axial package, rated for -65°C to 175°C junction temperature. No power-line protection feature — this is a unidirectional Zener TVS for general-purpose transient suppression on DC rails. The 1500W rating is derated above 25°C per the datasheet curve; at 175°C junction the pulse power capability drops significantly.

Frequently asked questions

What is the replacement for 1.5KE91ARL4?

onsemi does not publish a direct successor for the 1.5KE91ARL4. A cross to a current-production 1500W Zener TVS with a 77.8V reverse standoff and 86.5V breakdown in DO-201AD is needed. The 1.5KE91A (without the RL4 suffix) is the same die in a different packaging option — confirm Tape & Reel vs bulk before substituting.

1.5KE91ARL4 vs 1.5KE91A - what's the difference?

Both share the same 1.5KE91A Zener die with 86.5V breakdown and 1500W rating. The RL4 suffix indicates Tape & Reel packaging; the base 1.5KE91A may be supplied in bulk or other packaging. Electrical characteristics are identical.