Is there a pin-compatible replacement for BZT52C11-7-F?

While several parts share the SOD123 package, no exact electrical match has been found. BZT52C12-7-F is form-fit compatible but has a different Zener voltage.

What risks should I check before replacing BZT52C11-7-F?

Verify your circuit's tolerance for a higher Zener voltage (e.g., 12V instead of 11V) and a potential increase in Zener impedance, which affects voltage regulation.

BZT52C11-7-F Alternatives, Datasheet & Cross Reference | Diodes Incorporated

BZT52C11-7-F is a popular 11V, 500mW Zener diode in a SOD123 package from Diodes Inc. This page reviews potential alternatives for your design.

AI replacement insight

Electrical riskmedium

Higher Zener voltage (12V vs 11V) requires circuit tolerance validation.

Package risklow

Candidates share the same SOD123 package, ensuring form and fit.

Sourcing risklow

Alternatives are from the same manufacturer and are widely available.

Can it be replaced directly?

No direct pin-to-pin replacement has been identified. All close alternatives have a different Zener voltage and require engineering review.

Best replacement path

BZT52C12-7-F is the closest alternative, offering the same package and power but with a slightly higher 12V Zener voltage.

Main risk

The primary risk is the difference in Zener voltage, which can affect the regulation point of your circuit.

Recommended alternatives

A parametric alternative in the same SOD123 package with a slightly higher Zener voltage of 12V.

View details

Alternative comparison matrix

Feature / factor	BZT52C11-7-F	BZT52C12-7-F	MMSZ5242B-7-F	Compatibility / risk
Package	SOD123	SOD123	SOD123	SOD123 — Package matches, ensuring form and fit.; MMSZ5242B-7-F: Package matches, ensuring form and fit.
Voltage	11.0V	12.0V	12.0V	12.0V — Candidate Zener voltage is ~9% higher.; MMSZ5242B-7-F: Candidate Zener voltage is ~9% higher.
Power	0.5W	0.5W	0.5W	0.5W — Power dissipation rating is identical.; MMSZ5242B-7-F: Power dissipation rating is identical.
Zener Impedance	20 Ohm	25 Ohm	30 Ohm	25 Ohm / 30 Ohm — Slightly higher impedance may affect regulation.; MMSZ5242B-7-F: Higher impedance, specified at a different current.
Qualification	AEC-Q101	AEC-Q101	-	AEC-Q101 — Both parts are AEC-Q101 qualified.
Current	5mA	-	20mA	20mA — Test current is much higher, affecting impedance comparison.

Application & sourcing insights

Questions & answers

BZT52C12-7-F is a strong candidate. It shares the same package and power rating but has a 12V Zener voltage, requiring circuit tolerance verification.