SMF30CA
MDD
Needs validationlow risk
Strong match with identical key specs (30V, 200W, Bi-directional) and SOD-123FL package.
Best Alternatives to SMFJ30CA
SMFJ30CA is a 200W, 30V bi-directional TVS diode in a compact SOD-123FL package for surge protection. Finding a suitable replacement requires matching polarity, standoff voltage, and package.
AI replacement insight
Electrical riskhigh
Mismatched polarity or lower standoff voltage can cause immediate circuit failure.
Package risklow
SOD-123FL is a standard package with good cross-vendor compatibility.
Sourcing riskmedium
Multiple vendors make similar parts, but regional availability and stock can vary.
Can it be replaced directly?
Direct replacement for SMFJ30CA should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The most promising path is cross-referencing to other manufacturers' parts with the 'SMF30CA' part number, which share identical core specifications.
Main risk
The main risk is substituting with a part that has a lower standoff voltage (e.g., 28V or 26V) or incorrect polarity (uni-directional), which can lead to circuit malfunction or damage.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | SMFJ30CA | SMF30CA | SMFJ28CA | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Polarity Or Type | Bi-directional | Bidirectional | Bi-Directional | Bidirectional / Bi-Directional — Polarity matches target.; SMFJ28CA: Polarity matches. | |
| Voltage V | 30.0V | 30.0V | 28.0V | 30.0V / 28.0V — Reverse standoff voltage matches.; SMFJ28CA: Lower standoff voltage presents a risk. | |
| Power W | 200.0W | 200.0W | 200.0W | 200.0W — Peak pulse power matches.; SMFJ28CA: Power rating matches. | |
| Current A | 4.1A | 4.1A | 4.4A | 4.1A / 4.4A — Peak pulse current matches.; SMFJ28CA: Higher peak current is acceptable. | |
| Package | SOD-123FL | SOD-123FL | SOD-123FL | SOD-123FL — Package matches.; SMFJ28CA: Package matches. |
Application & sourcing insights
Questions & answers
Verified drop-in options for SMFJ30CA 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.