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onsemi 1.5KE250AG — Circuit Protection

1.5KE250AG onsemi Zener TVS Diode – Obsolete, Sourcing Info

MPN1.5KE250AG
Obsolete

onsemi Mosorb™ series, Zener TVS diode, 1.5KE250AG, 1500W peak pulse power (10/1000µs), 214V reverse standoff, 237V breakdown min, 344V clamping, DO-201AD axial package, through-hole mount.

onsemi 1.5KE250AG datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

1.5KE250AG specifications
ParameterValue
TypeZener
SeriesMosorb™
MountingThrough Hole
Voltage - breakdown237V
Voltage - clamping (Max) @ ipp344V
Voltage - reverse standoff214V
Current - peak pulse (10/1000μs)5A
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

Transient suppressor for 214V DC rails

The 1.5KE250AG is a unidirectional Zener TVS diode from onsemi's Mosorb™ series, designed to clamp transients on DC rails up to 214V continuous (reverse standoff) with a peak pulse power rating of 1500W (10/1000µs waveform). In a typical 214V bus application, the device breaks down at 237V minimum and clamps at 344V maximum, shunting 5A of surge current away from the load.

Obsolete – last-time-buy window closed

onsemi has marked the 1.5KE250AG as Obsolete. For existing BOMs, procurement should verify date-code authenticity and source from verified inventory through an RFQ. The DO-201AD axial package is widely used in through-hole designs, so a form-fit-function replacement from the same 1.5KE series or another manufacturer's TVS portfolio is the practical path forward.

Package and mounting – DO-201AD axial

The part comes in a DO-201AD axial-lead package, through-hole mount. The axial form factor is straightforward for hand-soldering or wave-solder rework; lead bending for board standoff is common. The package is, so reel or tape quantities are not an option for automated pick-and-place.

Frequently asked questions

How can I order the 1.5KE250AG or check availability?

The 1.5KE250AG is obsolete per onsemi. We source from our verified inventory and supply chain on an RFQ basis – submit a request with your target quantity and we will confirm availability and current pricing at quote time.

What is the replacement for the 1.5KE250AG?

No official successor is listed by onsemi. A form-fit-function alternative within the same 1.5KE series – such as a 1.5KE250A variant from onsemi or another manufacturer – is the most direct drop-in. Confirm the reverse standoff (214V), breakdown (237V min), clamping (344V max), and package (DO-201AD) match your BOM.