
onsemi
A Schottky diode with matching package and ratings; offers lower Vf but has different electrical characteristics.
MURS220T3G is a 200V, 2A ultrafast rectifier in an SMB package, ideal for high-frequency applications. Finding a substitute requires matching its fast 35ns recovery time and low forward voltage.
Key parameters like Vf and trr differ in most candidates.
All reviewed candidates use the same SMB package.
Multiple vendors offer parts in this package and rating class.
No exact drop-in replacement is identified. All candidates have parametric differences in speed, forward voltage, or technology that require engineering review.
Upgrade to MURS360BT3G for higher voltage/current, but verify Vf. For lower power loss, consider the Schottky diode MBRS3200T3G, but check reverse leakage.
The primary risk is performance degradation from a higher forward voltage (Vf) causing excess heat, or a slower reverse recovery time (trr) increasing switching losses.

onsemi
A Schottky diode with matching package and ratings; offers lower Vf but has different electrical characteristics.
| Feature / factor | MURS220T3G | MBRS3200T3G | MURS360BT3G | STTH212U | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMB (DO-214AA) | SMB (DO-214AA) | SMB (DO-214AA) | SMB | SMB (DO-214AA) — Package matches.; MURS360BT3G: Package matches.; STTH212U: Package matches.; UF2G: Package matches. |
| Voltage | 200V | 200V | 600V | 1200V | 200V / 600V / 1200V / 400V — Voltage rating matches.; MURS360BT3G: Voltage rating is higher.; STTH212U: Voltage rating is significantly higher.; UF2G: Voltage rating is higher. |
| Current | 2A | 3A | 3A | 2A | 3A / 2A — Current rating is higher.; MURS360BT3G: Current rating is higher.; STTH212U: Current rating matches.; UF2G: Current rating matches. |
| Technology | Ultrafast | Schottky | - | - | Schottky — Candidate is a Schottky diode, target is Ultrafast. |
| Speed | 35ns | - | 75ns | 75ns | 75ns / 50ns — Reverse recovery time is slower.; STTH212U: Reverse recovery time is slower.; UF2G: Reverse recovery time is slightly slower. |
| Forward Voltage | 0.95V @ 2A | - | Not specified | 1.5V @ 2A | Not specified / 1.5V @ 2A / 1.4V @ 2A — Forward voltage (Vf) must be verified from datasheet.; STTH212U: Higher Vf will increase power dissipation.; UF2G: Higher Vf will increase power dissipation. |
MURS360BT3G is a promising upgrade from the same manufacturer with higher ratings, but its forward voltage must be verified. MBRS3200T3G is a Schottky alternative with faster switching and lower Vf, but potentially higher reverse leakage.