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Best Alternatives to MURA120T3G

Package: DO-214AC, SMAonsemiDiodes - Rectifiers - SinglePackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - DC Reverse (Vr) (Max): 200 VCurrent - Average Rectified (Io): 1AVoltage - Forward (Vf) (Max) @ If: 875 mV @ 1 ACurrent - Reverse Leakage @ Vr: 2 µA @ 200 V

MURA120T3G is a 200V, 1A ultrafast rectifier from onsemi in an SMA package, notable for its 35ns reverse recovery time. Finding a substitute requires careful matching of its speed and efficiency for high-frequency applications.

AI replacement insight

Electrical riskmedium

Key parameters like reverse recovery time (trr) and forward voltage (Vf) can differ, impacting circuit timing and efficiency.

Package risklow

All viable candidates use the same standard SMA package, ensuring mechanical compatibility.

Can it be replaced directly?

Direct replacement for MURA120T3G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Prioritize STTH102A due to its matching ratings and faster speed, but verify the slightly higher forward voltage is acceptable for your design's thermal budget.

Main risk

The primary risk is using a diode with a slower reverse recovery time (trr > 35ns), which can degrade performance in high-frequency switching circuits.

Recommended alternatives

3
STTH102A package
STTH102A

STMicroelectronics

Needs validationmedium risk

Strong match with same package and ratings, plus faster recovery time. Verify forward voltage.

View details

Alternative comparison matrix

Feature / factorMURA120T3GSTTH102ASTTH110AUS2MCompatibility / risk
PackageSMA (DO-214AC)SMA (DO-214AC)SMA (DO-214AC)DO-214AC (SMA)SMA (DO-214AC) / DO-214AC (SMA) — Same package and pin count.; STTH110A: Same package and pin count.; US2M: Same package and pin count.
Voltage200V200V1000V1000V200V / 1000V — Voltage rating matches.; STTH110A: Higher voltage rating is a safe upgrade.; US2M: Higher voltage rating is a safe upgrade.
Current1.0A1.0A1.0A2.0A1.0A / 2.0A — Current rating matches.; STTH110A: Current rating matches.; US2M: Higher current rating is a safe upgrade.
Trr35ns20ns75ns75ns20ns / 75ns — Candidate is faster.; STTH110A: Significantly slower recovery time is a performance downgrade.; US2M: Significantly slower recovery time is a performance downgrade.
Vf0.71V0.78V--0.78V — Slightly higher forward voltage may increase power loss.

Application & sourcing insights

Questions & answers

Verified drop-in options for MURA120T3G 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.