Is there a pin-compatible replacement for BZT52C30S?

BZT52C33S and BZT52C36S share the same SOD-323 package and are pin-compatible in form. However, their Zener voltages (33V and 36V) are higher than the 30V of the original, which requires engineering review.

What risks should I check before replacing BZT52C30S?

The main risk is electrical. Verify that your circuit can tolerate a higher Zener voltage (e.g., 33V instead of 30V). Also check the Zener impedance (Zzt), as a higher value can affect regulation performance.

BZT52C30S Alternatives, Datasheet & Cross Reference | Yangjie Technology

BZT52C30S is a popular 30V, 200mW Zener diode in a compact SOD-323 package, used for voltage regulation. Finding a substitute requires matching the Zener voltage, power rating, and package footprint.

AI replacement insight

Electrical riskhigh

Zener voltage mismatch is critical for regulation circuits.

Package risklow

Alternatives in the same SOD-323 package are available.

Can it be replaced directly?

No direct, 1:1 replacement for BZT52C30S has been verified. All candidates require engineering review due to different Zener voltages.

Best replacement path

Consider BZT52C33S if a 10% higher Zener voltage is tolerable in your application, after engineering review.

Main risk

The primary risk is circuit malfunction or damage due to using a substitute with a higher Zener voltage (Vz).

Recommended alternatives

A potential alternative in the same package but with a higher 33V Zener voltage; review required.

View details

Alternative comparison matrix

Feature / factor	BZT52C30S	BZT52C33S	BZT52C36S	Compatibility / risk
Package	SOD-323	SOD-323	SOD-323	SOD-323 — Form factor matches.; BZT52C36S: Form factor matches.
Voltage	30V	33V	36V	33V / 36V — 10% higher Zener voltage, requires circuit review.; BZT52C36S: 20% higher Zener voltage, requires circuit review.
Power	200mW	200mW	200mW	200mW — Power rating matches.; BZT52C36S: Power rating matches.
Pinout	2	null	-	null — Pin count data missing, requires datasheet check.
Impedance	80 Ohms	-	90 Ohms	90 Ohms — Slightly higher impedance may affect regulation.

Application & sourcing insights

Questions & answers

There are no exact drop-in replacements from other major brands in our catalog. However, parts from the same BZT52CxxS series like BZT52C33S may be considered if a 10% higher Zener voltage is acceptable for the application.