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Best Alternatives to MMSZ5231B-7-F

Package: SOD-123Diodes IncorporatedDiodes - Zener - SinglePackage: Tape & Reel (TR); Cut Tape (CT); Digi-Reel®Voltage - Zener (Nom) (Vz): 5.1 VTolerance: ±5%Current - Reverse Leakage @ Vr: 5 µA @ 2 VVoltage - Forward (Vf) (Max) @ If: 900 mV @ 10 mA

MMSZ5231B-7-F is a 5.1V 500mW SOD123 Zener diode. The reviewed list does not contain a confirmed direct replacement.

AI replacement insight

Electrical riskhigh

closest kept part is 6.8V, not 5.1V

Package risklow

SOD123 and 2 pins match fields

Firmware risklow

no firmware interface

Sourcing riskmedium

candidate lifecycle is not active

Can it be replaced directly?

No pin-compatible direct replacement is confirmed from these candidates.

Best replacement path

Use an exact 5.1V SOD123 Zener if available; otherwise review MMSZ5235B-7-F only for 6.8V-tolerant circuits.

Main risk

Zener voltage mismatch changes clamp or reference behavior.

Recommended alternatives

1
MMSZ5235B-7-F package
MMSZ5235B-7-F

Diodes Incorporated

Needs validationhigh risk

MMSZ5235B-7-F is same-package 500mW Zener but uses a 6.8V setpoint.

View details

Alternative comparison matrix

Feature / factorMMSZ5231B-7-FMMSZ5235B-7-FAlt 2Alt 3Compatibility / risk
PackageSOD123SOD123SOD123 — same package field
Pinout2-pin diode2-pin diode2-pin diode — pin function not proven
Voltage5.1V Zener6.8V Zener6.8V Zener — higher clamp point
Power500mW500mW500mW — same rating
Temperature-65 to +150C-65 to +150C-65 to +150C — range covers

Application & sourcing insights

Questions & answers

From this list, no direct alternative is confirmed. MMSZ5235B-7-F is only a relaxed option if 6.8V is acceptable.