Is there a pin-compatible replacement for BZT52C16-E3-08?

MMSZ5245B and MMSZ5248B use the same SOD-123 package and are likely pin-compatible, but the Zener voltage differs. A direct drop-in replacement with 16V Zener voltage should be sourced from other manufacturers' series.

What risks should I check before replacing BZT52C16-E3-08?

The primary risk is the Zener voltage. Ensure your circuit can tolerate a 15V or 18V regulation point instead of 16V. Also, verify the substitute's dynamic impedance and reverse leakage current meet your design's needs.

BZT52C16-E3-08 Alternatives, Datasheet & Cross Reference | Vishay General Semiconductor - Diodes Division

BZT52C16-E3-08 is a popular 16V, 500mW Zener diode from Vishay in a compact SOD-123 package. This page reviews potential alternatives and analyzes compatibility for your design.

AI replacement insight

Electrical riskmedium

Zener voltage differs, requiring circuit analysis.

Package risklow

Candidates use the same SOD-123 package.

Sourcing risklow

The proposed alternatives are active parts from major manufacturers.

Can it be replaced directly?

No direct, 1-to-1 replacement was found in this analysis. The closest options have slightly different Zener voltages (15V or 18V).

Best replacement path

Parametric alternatives like MMSZ5245B (15V) or MMSZ5248B (18V) are readily available but require design review for voltage tolerance.

Main risk

The main risk is the Zener voltage deviation from the original 16V, which could affect the regulation point of the circuit.

Recommended alternatives

A functional alternative in the same SOD-123 package with a slightly lower Zener voltage of 15V.

View details

Alternative comparison matrix

Feature / factor	BZT52C16-E3-08	MMSZ5245B	MMSZ5248B	Compatibility / risk
Package	SOD-123	SOD-123	SOD-123	SOD-123 — Package matches, enabling form-fit compatibility.; MMSZ5248B: Package matches, enabling form-fit compatibility.
Voltage	16V	15V	18V	15V / 18V — Zener voltage is slightly lower, requires circuit tolerance check.; MMSZ5248B: Zener voltage is slightly higher, requires circuit tolerance check.
Power	500mW	500mW	500mW	500mW — Power rating is identical.; MMSZ5248B: Power rating is identical.
Impedance	40 Ohms	16 Ohms	16-21 Ohms	16 Ohms / 16-21 Ohms — Lower impedance is generally favorable.; MMSZ5248B: Lower impedance is generally favorable.

Application & sourcing insights

Questions & answers

MMSZ5245B (15V) and MMSZ5248B (18V) are strong candidates in the same package, but require verifying if the different Zener voltage is acceptable for your application.