
FUXINSEMI
A potential upgrade from the same manufacturer with a higher 5A current rating in the identical SMA package.
SS36A is a common 60V, 3A Schottky rectifier in an SMA package. Several alternatives exist with similar or upgraded ratings, but careful review of forward voltage (Vf) is required to avoid increased power loss.
Many alternatives have higher forward voltage (Vf), increasing power loss.
Many candidates are available in the same SMA package.
No perfect drop-in replacement is identified. SS56A is the closest upgrade, while others like SS310A require checking the impact of a higher forward voltage.
Upgrade to SS56A for higher current handling or consider SS310A for higher voltage, but verify its higher forward voltage is acceptable.
Increased power dissipation due to higher forward voltage (Vf) in many alternatives, which can affect thermal performance and efficiency.

FUXINSEMI
A potential upgrade from the same manufacturer with a higher 5A current rating in the identical SMA package.
| Feature / factor | SS36A | SS56A | SS310A | SS510 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMA(DO-214AC) | SMA (DO-214AC) | SMA (DO-214AC) | SMA (DO-214AC) | SMA (DO-214AC) — Identical package ensures form and fit.; SS310A: Identical package ensures form and fit.; SS510: Identical package ensures form and fit. |
| Voltage | 60V | 60V | 100V | 100V | 60V / 100V — Voltage rating is identical. Verify design margin.; SS310A: Higher voltage rating provides more safety margin.; SS510: Higher voltage rating provides more safety margin. |
| Current | 3A | 5A | 3A | 5A | 5A / 3A — Higher current rating provides more operational margin.; SS310A: Current rating is identical.; SS510: Higher current rating provides more operational margin. |
| Forward Voltage | 0.70V @ 3A | 700mV@5A | 850mV@3A | 850mV@5A | 700mV@5A / 850mV@3A / 850mV@5A — Vf is comparable or better at target's current.; SS310A: Higher Vf will increase power loss and heat.; SS510: Higher Vf will likely increase power loss and heat. |
SS56A from the same manufacturer, FUXINSEMI, is a strong candidate. It offers a higher current rating (5A vs 3A) in the same SMA package with a comparable forward voltage, making it a potential upgrade.