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Best Alternatives to SM712-N

Package: SOT23BORNTVS - DiodesPeak Pulse Power: 400 WWorking Voltage (Data): 12 VWorking Voltage (GND): 7 VESD Protection: ±15kV (Air), ±8kV (Contact)Number of Lines: 2

SM712-N is an asymmetrical TVS diode in a SOT23 package, designed to protect two RS-485 data lines. Strong pin-compatible alternatives like SM712.TCT and PSM712 are available from other manufacturers.

AI replacement insight

Electrical risklow

Key parameters like voltage, power, and asymmetrical function match on top candidates.

Package riskmedium

While the SOT-23 package is standard, pinout must be verified to ensure pin 1 orientation is identical.

Sourcing risklow

The SM712 base part is a multi-source industry standard, improving availability.

Can it be replaced directly?

Direct replacement for SM712-N should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Start with Datasheet verified or Strong match candidates for SM712-N, then review parametric alternatives for package and electrical fit.

Main risk

The primary risk is minor pinout variations between manufacturers. Always verify the pinout diagram in the datasheet before implementation.

Recommended alternatives

2
PSM712 package
PSM712

Protek Devices

Needs validationlow risk

A well-known cross-vendor alternative with matching package, power, and asymmetrical voltage for RS-485.

View details

Alternative comparison matrix

Feature / factorSM712-NPSM712SM712.TCTAlt 3Compatibility / risk
PackageSOT23SOT-23SOT23SOT-23 / SOT23 — Package and pin count match.; SM712.TCT: Package and pin count match.
ApplicationAsymmetricalAsymmetricalAsymmetricalAsymmetrical — Both are asymmetrical TVS for RS-485.; SM712.TCT: Both are asymmetrical TVS for RS-485.
Voltage12V / 7V12V / 7V12V / -7V12V / 7V / 12V / -7V — Working voltages match.; SM712.TCT: Working voltages match.
Power400W400W400W400W — Peak pulse power ratings are identical.; SM712.TCT: Peak pulse power ratings are identical.

Application & sourcing insights

Questions & answers

Verified drop-in options for SM712-N are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.