SM712-02HTG
TECH PUBLIC
Needs validationlow risk
A common, upgraded alternative from Littelfuse with higher ratings and automotive qualification.
Best Alternatives to PSM712-ES
The PSM712-ES is a TVS diode in a SOT-23 package designed for RS-485 circuit protection. Excellent alternatives are available, including direct equivalents and upgraded, automotive-qualified parts from industry-leading manufacturers.
AI replacement insight
Electrical riskhigh
Using a TVS with the wrong voltage rating will either fail to protect the circuit or clamp valid signals.
Package risklow
The SOT-23 package and its pinout for this application are highly standardized.
Can it be replaced directly?
Direct replacement for PSM712-ES should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Upgrade to the industry-standard Littelfuse SM712-02HTG for higher performance and AEC-Q101 qualification.
Main risk
The main risk is selecting a TVS diode with the wrong working voltage. Many SOT-23 TVS diodes exist for different applications (e.g., 5V USB, 24V CAN) and are not interchangeable.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | PSM712-ES | SM712-02HTG | CDSOT23-SM712-ES | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 | SOT23-3 | - | SOT-23 — Identical package and pin count. | |
| Power | 400.0 W | 600.0 W | - | 400.0 W — Peak pulse power matches. | |
| Current | 17.0 A | 19.0 A | - | 17.0 A — Peak pulse current matches. | |
| Polarity | Bidirectional | Asymmetrical | - | Bidirectional — Part numbers suggest identical asymmetrical function for RS-485. | |
| Application | Not specified | AEC-Q101 | - | AEC-Q101 — Candidate is automotive qualified. | |
| Manufacturer | ElecSuper | - | ElecSuper | ElecSuper — Same manufacturer as target. |
Application & sourcing insights
Questions & answers
Verified drop-in options for PSM712-ES 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.