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onsemi 1.5KE9.1ARL4 — Circuit Protection
onsemi

1.5KE9.1ARL4 onsemi Mosorb™ Zener TVS, 1500W, DO-201AD

MPN1.5KE9.1ARL4
Obsolete

onsemi Mosorb™ 1.5KE9.1ARL4, Zener TVS diode, 1500W peak pulse power, 7.78V reverse standoff, 13.4V clamping, DO-201AD axial package, through-hole mount.

$0.6700Ref. price · indicative, final on quote
1.5KE9.1ARL4 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

1.5KE9.1ARL4 Technical Specifications
ParameterValue
TypeZener
SeriesMosorb™
Mounting typeThrough Hole
Voltage - breakdown8.65V
Voltage - clamping (Max) @ ipp13.4V
Voltage - reverse standoff7.78V
Current - peak pulse (10/1000μs)112A
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 peak pulse power in a DO-201AD axial package

The 1.5KE9.1ARL4 is an onsemi Mosorb™ Zener TVS diode rated for 1500 W peak pulse power, with a reverse standoff voltage of 7.78 V and a maximum clamping voltage of 13.4 V at 112 A peak pulse current. This single unidirectional channel protects a 7.78 V rail from transients up to 1500 W, making it suitable for general-purpose surge suppression in through-hole designs.

Clamping voltage and breakdown margin

With a minimum breakdown voltage of 8.65 V and a maximum clamp of 13.4 V, the 1.5KE9.1ARL4 offers a ~5 V margin between the rail and the clamp—tight enough for a 7.78 V nominal bus but not for a 12 V rail. The 112 A peak pulse current capability (10/1000 µs) ensures the diode can absorb repetitive surges without exceeding the junction temperature range of -65°C to 175°C.

Obsolete status and sourcing reality

onsemi has marked the 1.5KE9.1ARL4 as Obsolete. No official successor is listed. For a BOM line that still calls for this exact order code, the only procurement path is to source remaining inventory through distribution or broker channels. The DO-201AD axial footprint is shared by many active TVS diodes in the 1.5KE series—confirm the breakdown voltage and package match when substituting.

Frequently asked questions

How can I order 1.5KE9.1ARL4 or check availability?

Submit an RFQ for the 1.5KE9.1ARL4. As an obsolete part, availability is limited to existing stock; we source against your BOM quantity and confirm pricing and lead time at quote. The DO-201AD axial package is tape-and-reel or bulk—specify preference in the RFQ.

What is the replacement for 1.5KE9.1ARL4?

No official replacement is listed by onsemi. For a pin-compatible alternative, look for a 1.5KE series Zener TVS with the same 7.78 V standoff, 8.65 V min breakdown, and DO-201AD axial package—such as the active 1.5KE9.1A (without the RL4 suffix). Confirm the clamping voltage and peak pulse current match your transient requirements before substituting.