SS315
Yangzhou Yangjie Electronic Technology Co.,Ltd
Needs validationlow risk
A pin-compatible alternative in the same SMA package with a higher voltage rating (150V) but slightly higher Vf.
Best Alternatives to SS38
SS38 is a common 80V, 3A Schottky diode in an SMA package. Alternatives are available with matching or higher voltage ratings, but package compatibility and forward voltage drop must be verified for a successful substitution.
AI replacement insight
Package riskhigh
Many candidates are in different packages (SMB, SMAF) and require a new PCB layout.
Electrical risklow
Most candidates have equal or better voltage/current ratings, but forward voltage (Vf) may differ.
Can it be replaced directly?
Direct replacement for SS38 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Use SS315 or SS3150 for a near drop-in replacement, verifying the slightly higher forward voltage. For new designs, consider SMB parts like SS5150B for higher current.
Main risk
The primary risks are physical package incompatibility (e.g., SMA vs. SMB) and potentially higher forward voltage (Vf) in some alternatives, which could affect efficiency.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | SS38 | SS315 | SS3150 | SS310F | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DO-214AC (SMA) | DO-214AC (SMA) | DO-214AC, SMA | SMAF | DO-214AC (SMA) / DO-214AC, SMA / SMAF / DO-214AA (SMB) — Package is physically compatible.; SS3150: Package is physically compatible.; SS310F: SMAF package is flatter and has a different footprint than SMA.; SS320B: SMB package is larger than SMA; not a drop-in replacement. |
| Voltage | 80V | 150V | 150V | 100V | 150V / 100V / 200V — Higher voltage rating provides more design margin.; SS3150: Higher voltage rating provides more design margin.; SS310F: Higher voltage rating provides more margin.; SS320B: Significantly higher voltage rating. |
| Current | 3A | 3A | 3A | 3A | 3A — Average rectified current matches.; SS3150: Average rectified current matches.; SS310F: Average rectified current matches.; SS320B: Average rectified current matches. |
| Forward Voltage | 0.85V @ 3A | 0.95V @ 3A | - | - | 0.95V @ 3A — Slightly higher Vf may increase power loss. |
Application & sourcing insights
Questions & answers
Verified drop-in options for SS38 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.