SS34
MDD
Needs validationlow risk
A pin-compatible alternative with identical ratings and package. Review forward voltage for thermal impact.
Best Alternatives to MBRA340T3G
MBRA340T3G is a 40V, 3A Schottky rectifier from onsemi in a compact SMA package, widely used for high-efficiency power applications. This page provides verified alternatives and replacement analysis.
AI replacement insight
Electrical risklow
Key parameters match on several candidates; Vf is the main check.
Package riskmedium
Some candidates use different packages (SMC) requiring a board spin.
Sourcing risklow
This is a common diode footprint with many cross-vendor options.
Can it be replaced directly?
Direct replacement for MBRA340T3G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
SS34 for a direct drop-in, or SS310 for a robust upgrade.
Main risk
Ensuring the forward voltage (Vf) of the replacement is not significantly higher, which could decrease system efficiency and increase heat.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | MBRA340T3G | SS34 | SS310 | SS510 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMA (DO-214AC) | SMA (DO-214AC) | - | - | DO-214AB (SMC) — Package is larger (SMC) and not a drop-in fit for SMA. |
| Voltage | 40.0V | 40.0V | - | - | 40.0V — Voltage rating is identical. |
| Current | 3.0A | 3.0A | - | - | 5.0A — Higher current rating provides increased design margin. |
| Forward Voltage | 450mV @ 3A | 500mV @ 3A | - | - | 500mV @ 3A — Vf is slightly higher; review thermal impact. |
Application & sourcing insights
Questions & answers
Verified drop-in options for MBRA340T3G 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.