Is there a pin-compatible replacement for MMSZ5235BT1G?

Yes, parts like MMSZ5234BT1G are pin-compatible (SOD-123 package). However, their electrical parameters, specifically Zener voltage, differ and are not a direct functional match.

What risks should I check before replacing MMSZ5235BT1G?

The main risk is the different Zener voltage (Vz). Ensure the substitute's Vz is within your circuit's acceptable range. Also verify Zener impedance (Zzt) if critical.

MMSZ5235BT1G Alternatives, Datasheet & Cross Reference | onsemi

MMSZ5235BT1G is a 6.8V Zener diode in a SOD-123 package. While no drop-in replacement is confirmed, several parametric alternatives exist that require voltage tolerance verification.

AI replacement insight

Electrical riskmedium

Zener voltage mismatch requires circuit tolerance verification.

Package risklow

Candidates share the same SOD-123 package and pinout.

Can it be replaced directly?

No direct, drop-in replacement for MMSZ5235BT1G has been verified. All candidates require engineering review due to different Zener voltages.

Best replacement path

MMSZ5234BT1G offers the same package and power rating but with a lower 6.2V Zener voltage. This is the closest option but requires circuit analysis.

Main risk

The primary risk is the change in Zener voltage, which directly impacts the circuit's voltage regulation point.

Recommended alternatives

A form-fit compatible Zener diode with a higher nominal voltage (8.2V).

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Alternative comparison matrix

Feature / factor	MMSZ5235BT1G	MMSZ5237BT1G	MMSZ5234BT1G	Compatibility / risk
Package	SOD-123	SOD-123	SOD-123	SOD-123 — Identical package ensures form-fit compatibility.; MMSZ5234BT1G: Identical package ensures form-fit compatibility.
Voltage	6.8V	8.2V	6.2V	8.2V / 6.2V — Higher Zener voltage (8.2V vs 6.8V). Unlikely to be a drop-in replacement.; MMSZ5234BT1G: Lower Zener voltage. Target is 6.8V. Circuit tolerance must be verified.
Power	0.5W	0.5W	0.5W	0.5W — Identical power dissipation rating.; MMSZ5234BT1G: Identical power dissipation rating.
Manufacturer	onsemi	-	onsemi	onsemi — Same manufacturer and product family.

Application & sourcing insights

Questions & answers

MMSZ5234BT1G is the closest alternative, offering the same package and power but a lower 6.2V Zener voltage. This requires verifying your circuit's tolerance.