
SHIKUES
A 5A Schottky diode in the same SMAF package, offering higher current handling but requiring voltage margin review.
Finding a replacement for the SSL36F, a 60V, 3A Schottky rectifier in an SMAF package, requires matching its low forward voltage and high efficiency. This guide reviews alternatives for your power supply and rectification applications.
Candidates have trade-offs in voltage margin and forward voltage that require review.
The SMAF package is common and mechanically compatible.
Multiple vendors produce similar Schottky diodes in this package.
No perfect drop-in replacement was found. SS56FL is the closest functional match but has an identical voltage rating, lacking a safety margin. Other options have a much higher forward voltage, increasing power loss.
SS56FL offers an upgrade in current but requires voltage margin verification.
The primary risk is finding a part that matches the low forward voltage (0.55V) of the SSL36F. Many alternatives have higher Vf, which increases power dissipation and reduces efficiency.

SHIKUES
A 5A Schottky diode in the same SMAF package, offering higher current handling but requiring voltage margin review.
| Feature / factor | SSL36F | SS56FL | SS320F | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMAF | SMAF | SMAF | SMAF — Package matches.; SS320F: Package matches. | |
| Voltage | 60V | 60V | 200V | 60V / 200V — Identical voltage rating provides no safety margin.; SS320F: Higher voltage rating provides ample margin. | |
| Current | 3A | 5A | 3A | 5A / 3A — Higher current rating is a safe upgrade.; SS320F: Current rating matches. | |
| Forward Voltage | 0.55V @ 3A | 0.5V @ 5A | 0.92V @ 3A | 0.5V @ 5A / 0.92V @ 3A — Lower forward voltage improves efficiency.; SS320F: Significantly higher Vf increases power loss. | |
| Temperature | -55°C to +125°C | -55°C to +125°C | - | -55°C to +125°C — Operating temperature range matches. |
The SS56FL is a strong candidate, offering a higher current rating (5A) in the same SMAF package. However, its 60V rating matches the SSL36F, so designers must verify their circuit's voltage margin.