
Diodes Incorporated
A 30V, 3A SBR in the same package with lower forward voltage, but a reduced maximum operating temperature.
SBR3M30P1-7 is a 3A, 30V AEC-Q101 qualified Super Barrier Rectifier from Diodes Inc. in a POWERDI123 package, notable for its high +175°C operating temperature. Finding a replacement requires careful attention to thermal performance.
Risk is from thermal performance; max temp is 25°C lower on candidates.
All viable candidates share the same PowerDI123 package.
No direct drop-in replacement exists without caveats. SBR3U40P1-7 and SBR3U30P1-7 are functionally similar but have a lower maximum operating temperature (+150°C vs +175°C).
SBR3U40P1-7 offers a voltage upgrade but requires thermal analysis due to its lower +150°C temperature rating.
Thermal derating. The target's +175°C rating is a key feature that most alternatives do not match.

Diodes Incorporated
A 30V, 3A SBR in the same package with lower forward voltage, but a reduced maximum operating temperature.
| Feature / factor | SBR3M30P1-7 | SBR3U30P1-7 | SBR3U40P1-7 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | POWERDI123 | PowerDI123 | PowerDI123 | PowerDI123 — Package matches, enabling form-fit compatibility.; SBR3U40P1-7: Package matches, enabling form-fit compatibility. | |
| Voltage | 30.0 V | 30.0 V | 40.0 V | 30.0 V / 40.0 V — Voltage rating matches the target.; SBR3U40P1-7: Higher voltage rating provides increased design margin. | |
| Current | 3.0 A | 3.0 A | 3.0 A | 3.0 A — Current rating matches the target.; SBR3U40P1-7: Current rating matches the target. | |
| Temperature | -65°C to +175°C | -65°C to +150°C | -65°C to +150°C | -65°C to +150°C — Lower max operating temperature requires thermal analysis.; SBR3U40P1-7: Lower max operating temperature requires thermal analysis. | |
| Vf - Forward Voltage (Max) | 0.50 V | 0.39 V | 0.47 V | 0.39 V / 0.47 V — Lower forward voltage reduces conduction losses.; SBR3U40P1-7: Lower forward voltage reduces conduction losses. |
SBR3U40P1-7 is a strong alternative with a higher voltage rating (40V) and lower forward voltage, but its max temperature is lower at +150°C. SBR3U30P1-7 is also a close match with a lower max temperature.