SM712.TCT
Semtech
Needs validationlow risk
A pin-compatible asymmetrical TVS diode from Semtech for RS-485 protection with matching voltage, power, and current ratings.
Best Alternatives to PSM712
PSM712 is an asymmetrical TVS diode in a SOT-23 package, designed to protect two RS-485 data lines. Key alternatives include other SM712 family parts from manufacturers like Semtech.
AI replacement insight
Electrical risklow
SM712.TCT has matching key electrical ratings.
Package risklow
SOT-23 is a standard package, but pinout must be confirmed.
Sourcing risklow
SM712 family parts are available from multiple vendors.
Can it be replaced directly?
Yes, Semtech's SM712.TCT is a potential direct replacement for PSM712, offering the same asymmetrical protection for RS-485, package, and key ratings. Pinout verification is recommended.
Best replacement path
The Semtech SM712.TCT is a strong, pin-compatible candidate with matching key electrical parameters, verified by datasheet evidence.
Main risk
The primary risk is ensuring the candidate is a true asymmetrical TVS diode for RS-485, not a standard bidirectional type. Pinout must also be identical.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | PSM712 | SM712.TCT | SM712-N | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-23 | SOT23 | - | SOT23 — Package matches. | |
| Function | Asymmetrical | Asymmetrical | - | Asymmetrical — Both are asymmetrical TVS for RS-485. | |
| Voltage | 12V / -7V | 12V / -7V | - | 12V — Working voltage matches. | |
| Power | 400W | 400W | - | 400W — Peak pulse power matches. | |
| Current | 12A | 12A | - | Not specified — Peak pulse current must be verified. |
Application & sourcing insights
Questions & answers
The Semtech SM712.TCT is considered the best alternative, as it is a well-documented, pin-compatible part with matching asymmetrical protection for RS-485 applications.