SS56FL
SHIKUES
Needs validationmedium risk
Package matches, but max operating temperature is lower. Review thermal design before use.
Best Alternatives to SS56F
SS56F is a popular 60V, 5A Schottky diode in a compact SMAF package. Finding a direct replacement requires careful comparison of package dimensions and thermal performance.
AI replacement insight
Package riskhigh
Many alternatives are in different packages (SMA, SMB, SMC) and are not drop-in replacements.
Electrical riskmedium
The closest package match (SS56FL) has a lower maximum operating temperature, which is a critical parameter.
Sourcing risklow
Many functional alternatives are available if a board redesign is possible.
Can it be replaced directly?
Direct replacement for SS56F should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
SS56FL offers the same package but requires thermal validation. SS56A may be footprint-compatible but needs layout and height check.
Main risk
The primary risk is physical incompatibility, as many parts with similar names use different packages (SMA, SMB, SMC). The second risk is the reduced temperature range of the package-matched SS56FL.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | SS56F | SS56FL | SS56A | SS56B | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMAF | SMAF | SMA (DO-214AC) | SMB (DO-214AA) | SMAF / SMA (DO-214AC) / SMB (DO-214AA) — Package matches target.; SS56A: Package is SMA, target is SMAF. Verify footprint and height.; SS56B: Package is SMB, which is larger than target's SMAF. |
| Voltage | 60V | 60V | 60V | 60V | 60V — Reverse voltage matches.; SS56A: Reverse voltage matches.; SS56B: Reverse voltage matches. |
| Current | 5A | 5A | 5A | 5A | 5A — Forward current matches.; SS56A: Forward current matches.; SS56B: Forward current matches. |
| Temperature | -55°C to +150°C | -55°C to +125°C | - | - | -55°C to +125°C — Candidate has a lower max operating temperature. |
| Forward Voltage | 0.70V @ 5A | 0.5V @ 5A | 0.70V @ 5A | - | 0.5V @ 5A / 0.70V @ 5A — Lower forward voltage offers better efficiency.; SS56A: Forward voltage matches. |
Application & sourcing insights
Questions & answers
Verified drop-in options for SS56F 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.