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Best Alternatives to MBRA140T3G

Package: DO-214AC, SMAonsemiDiodes - Rectifiers - SinglePackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - DC Reverse (Vr) (Max): 40 VCurrent - Average Rectified (Io): 1AVoltage - Forward (Vf) (Max) @ If: 550 mV @ 1 ACurrent - Reverse Leakage @ Vr: 500 µA @ 40 V

MBRA140T3G is a 40V, 1A AEC-Q101 qualified Schottky rectifier in an SMA package, used in automotive and power applications. Finding a replacement requires matching its low forward voltage, package, and automotive qualification.

AI replacement insight

Electrical riskhigh

Using a non-Schottky diode will increase forward voltage and power loss, impacting efficiency and thermals.

Application riskmedium

Many candidates lack the target's AEC-Q101 qualification, making them unsuitable for automotive designs.

Package risklow

All reviewed candidates use the same SMA package, ensuring physical compatibility.

Can it be replaced directly?

Direct replacement for MBRA140T3G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Upgrade to a higher-rated Schottky like SDT5A60SA-13 for more design margin, but verify AEC-Q101 needs.

Main risk

The main risk is substituting with a non-Schottky diode, which would significantly increase forward voltage drop and power loss.

Recommended alternatives

3
SDT5A60SA-13 package
SDT5A60SA-13

Diodes Incorporated

Needs validationlow risk

A strong upgrade with higher voltage and current ratings in the same SMA package, but lacks AEC-Q101 qualification.

View details

Alternative comparison matrix

Feature / factorMBRA140T3GSDT5A60SA-13STPS1L60AMURA110T3GCompatibility / risk
PackageSMA (DO-214AC)SMASMASMA (DO-214AC)SMA / SMA (DO-214AC) — Package is physically compatible.; STPS1L60A: Package is physically compatible.; MURA110T3G: Package is physically compatible.
Voltage40V60V60V100V60V / 100V — Higher voltage rating provides more design margin.; STPS1L60A: Higher voltage rating provides more margin.; MURA110T3G: Higher voltage rating.
Current1A5A1.0A1A5A / 1.0A / 1A — Significantly higher current rating.; STPS1L60A: Current rating is identical.; MURA110T3G: Current rating is identical.
Forward Voltage0.55V~0.52V0.54V @ 1A~0.85V @ 1A~0.52V / 0.54V @ 1A / ~0.85V @ 1A — Comparable low forward voltage drop.; STPS1L60A: Forward voltage is nearly identical.; MURA110T3G: Significantly higher Vf will increase power loss.
Temperature-55°C to +125°C-55°C to +150°C-40°C to 175°C--55°C to +150°C / -40°C to 175°C — Wider operating temperature range.; STPS1L60A: Reduced operating range at low temperatures.
ApplicationAEC-Q101Not specifiedNot specifiedAEC-Q101Not specified / AEC-Q101 — Candidate is not specified as AEC-Q101 qualified.; STPS1L60A: Candidate is not specified as AEC-Q101 qualified.; MURA110T3G: Both parts are AEC-Q101 qualified.
Diode TechnologySchottky--UltrafastUltrafast — Different diode type (Ultrafast vs. Schottky).

Application & sourcing insights

Questions & answers

Verified drop-in options for MBRA140T3G 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.