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onsemi SMF150AT1 — Circuit Protection

SMF150AT1 Zener Diode – onsemi, 150V Standoff, SOD-123F

MPNSMF150AT1
Obsolete

onsemi SMF150AT1 Zener diode, 150V reverse standoff, 243V clamping at 700mA peak pulse, 200W peak pulse power, SOD-123F surface-mount package

$0.1000Ref. price · indicative, final on quote
onsemi SMF150AT1 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

SMF150AT1 specifications
ParameterValue
TypeZener
MountingSurface Mount
Voltage - breakdown167V
Voltage - clamping (Max) @ ipp243V
Voltage - reverse standoff150V
Current - peak pulse (10/1000μs)700mA
Power - peak pulse200W
Power line protectionNo
Operating temperature-55°C~150°C(TJ)
PackageTape & Reel (TR)
ApplicationsGeneral Purpose
CaseSOD-123F
Unidirectional channels1

Product details

150V standoff, 243V clamp – overvoltage protection for 150V rails

This Zener diode clamps transients at 243V max with a 700mA peak pulse current (10/1000µs waveform). The 150V reverse standoff rating means it stays off the line under normal conditions, only conducting during overvoltage events. The 200W peak pulse power handles short-duration surges on 150V DC buses or telecom lines.

SOD-123F – compact surface-mount for dense boards

Packaged in SOD-123F (supplier device package SOD-123FL), a small outline diode package suited for automated pick-and-place. The surface-mount footprint saves board space compared to axial-leaded Zener diodes.

Frequently asked questions

Is the SMF150AT1 obsolete?

Yes, onsemi lists the SMF150AT1 as Obsolete. No official replacement or cross-reference is available from the manufacturer. It is available through independent surplus channels; confirm availability at RFQ.

What is the SMF150AT1 used for?

It is a Zener diode for overvoltage clamping. With a 150V reverse standoff and 243V clamping voltage, it protects downstream circuitry from transients on 150V rails, such as in telecom equipment or industrial power supplies.

What package is the SMF150AT1 in?

It comes in a SOD-123F surface-mount package (supplier device package SOD-123FL), supplied on Tape & Reel.