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Best Alternatives to RB161MM-20TR

Package: SOD-123FROHMDiodes - Rectifiers - SinglePackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - DC Reverse (Vr) (Max): 25 VCurrent - Average Rectified (Io): 1AVoltage - Forward (Vf) (Max) @ If: 350 mV @ 1 ACurrent - Reverse Leakage @ Vr: 700 µA @ 20 V

Finding a substitute for the ROHM RB161MM-20TR Schottky diode requires matching its SOD-123FL package and key electricals, especially its very low forward voltage (0.31V).

AI replacement insight

Electrical riskmedium

Most alternatives have higher forward voltage, increasing power loss. This is the primary risk to evaluate.

Package risklow

The SOD-123FL package is common, and many candidates match the form factor.

Can it be replaced directly?

No guaranteed drop-in replacement exists without verification. MBR230LSFT1G is the closest functional match, but its forward voltage characteristics must be tested in-circuit.

Best replacement path

MBR230LSFT1G is the most promising path, offering upgraded ratings with minimal parametric difference in forward voltage.

Main risk

Increased power dissipation due to higher forward voltage (Vf) in most alternatives.

Recommended alternatives

3
MBR230LSFT1G package
MBR230LSFT1G

Catalyst Semiconductor Inc.

Needs validationlow risk

A strong alternative with a matching package and similar forward voltage, plus higher voltage and current ratings.

View details

Alternative comparison matrix

Feature / factorRB161MM-20TRMBR230LSFT1GRBR3MM60ATFTRRB160MM-60TRCompatibility / risk
PackageSOD-123FLSOD-123FLSOD-123FLSOD-123FLSOD-123FL — Package matches, enabling form-fit compatibility.; RBR3MM60ATFTR: Package matches.; RB160MM-60TR: Package matches.
Voltage20V30V60V60V30V / 60V — Higher reverse voltage provides more design margin.; RBR3MM60ATFTR: Higher voltage rating.; RB160MM-60TR: Higher voltage rating.
Current1A2A3A1A2A / 3A / 1A — Higher forward current rating provides more design margin.; RBR3MM60ATFTR: Higher current rating.; RB160MM-60TR: Current rating matches.
Forward Voltage0.31V @ 1A~0.33V @ 1A0.66V @ 3A0.55V @ 1A~0.33V @ 1A / 0.66V @ 3A / 0.55V @ 1A — Forward voltage is very close to target, but should be verified in-circuit.; RBR3MM60ATFTR: Significantly higher Vf will increase power loss.; RB160MM-60TR: Significantly higher Vf will increase power loss.

Application & sourcing insights

Questions & answers

MBR230LSFT1G from onsemi is a strong candidate, offering higher voltage and current ratings with a very similar forward voltage. However, verification in your circuit is recommended.