SM712.TCT
TECH PUBLIC
Needs validationmedium risk
A cross-vendor alternative from the original design family with matching key electricals. Likely a drop-in replacement.
Best Alternatives to TPSM712
The TPSM712 is a 400W asymmetrical TVS diode in a SOT-23 package for RS-485 protection. Several cross-vendor alternatives with matching or upgraded specifications are available, but require engineering review to confirm pinout compatibility.
AI replacement insight
Package riskmedium
While the SOT-23 package is standard, pin assignments for the asymmetrical diodes can vary between manufacturers.
Electrical risklow
Key parameters like voltage, power, and current are well-matched by several candidates, but secondary specs like capacitance should be checked.
Can it be replaced directly?
Direct replacement for TPSM712 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Use a well-documented part from the SM712 family, such as Semtech's SM712.TCT or Littelfuse's SM712-02HTG for an upgrade.
Main risk
The primary risk is pinout incompatibility between different manufacturers' versions of this common part.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | TPSM712 | SM712.TCT | TPCDSOT23-SM712 | SM712-02HTG | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 | SOT23 | SOT-23 | SOT23 | SOT23 / SOT-23 — Form factor matches.; TPCDSOT23-SM712: Form factor matches.; SM712-02HTG: Form factor matches.; PSM712-LF-T7-JSM: Form factor matches. |
| Power | 400 W | 400 W | 400 W | 600 W | 400 W / 600 W — Peak pulse power matches.; TPCDSOT23-SM712: Peak pulse power matches.; SM712-02HTG: Higher peak power provides more robustness.; PSM712-LF-T7-JSM: Peak pulse power matches. |
| Voltage | 7 V / 12 V | 12 V / -7 V | 7 V / 12 V | -7 V to 12 V | 12 V / -7 V / 7 V / 12 V / -7 V to 12 V / 12 V / 7 V — Asymmetrical voltage matches.; TPCDSOT23-SM712: Asymmetrical voltage matches.; SM712-02HTG: Asymmetrical voltage matches.; PSM712-LF-T7-JSM: Asymmetrical voltage matches. |
| Current | 17 A | 17 A | 17 A | 19 A | 17 A / 19 A — Peak pulse current matches.; TPCDSOT23-SM712: Peak pulse current matches.; SM712-02HTG: Higher peak current rating.; PSM712-LF-T7-JSM: Peak pulse current matches. |
Application & sourcing insights
Questions & answers
Verified drop-in options for TPSM712 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.