Is there a pin-compatible replacement for BZX84C16?

Yes, many Zener diodes in the BZX84 series share the same SOT-23 package and pinout. However, you must verify the Zener voltage (Vz) is exactly 16V for a true drop-in replacement. Parametric alternatives like BZX84C15 require review.

What risks should I check before replacing BZX84C16?

The main risk is a Zener voltage mismatch, which will change the regulation point of your circuit. Also verify power dissipation, Zener impedance, and operating temperature range to ensure reliability under all conditions.

BZX84C16 Alternatives, Datasheet & Cross Reference | onsemi

BZX84C16 is a 16V, 300mW Zener diode in a SOT-23 package for voltage regulation. When searching for replacements, focus on matching the 16V Zener voltage and SOT-23 package.

AI replacement insight

Electrical riskhigh

Zener voltage is a critical parameter for regulation; any deviation can impact system behavior.

Package risklow

The SOT-23 package is standard and widely available, minimizing physical compatibility issues.

Can it be replaced directly?

No direct, verified pin-to-pin replacement was found. Candidates require review due to Zener voltage differences.

Best replacement path

The closest options are BZX84C15 (15V) and BZX84C18 (18V). BZX84C15 is slightly closer in voltage. Both require engineering validation.

Main risk

Zener voltage deviation from the required 16V, which will affect the circuit's voltage regulation performance.

Recommended alternatives

A parametric alternative in the same SOT-23 package, but with a lower Zener voltage of 15V.

View details

Alternative comparison matrix

Feature / factor	BZX84C16	BZX84C15	BZX84C18	Compatibility / risk
Package	SOT-23	SOT-23	SOT-23	SOT-23 — Package matches.; BZX84C18: Package matches.
Voltage	16V	15V	18V	15V / 18V — Lower zener voltage requires circuit validation.; BZX84C18: Higher zener voltage requires circuit validation.
Power	300mW	300mW+	300mW	300mW+ — Power rating is equal or better.; BZX84C18: Power rating matches.
Tolerance	±5%	±5%	±6.39%	±5% / ±6.39% — Voltage tolerance matches.; BZX84C18: Slightly wider tolerance.
Impedance	40 Ohms	30 Ohms	-	30 Ohms — Lower impedance is an improvement.

Application & sourcing insights

Questions & answers

The best alternative is a Zener diode with a 16V nominal voltage, 300mW or higher power rating, in a SOT-23 package. Parts like BZX84C15 (15V) or BZX84C18 (18V) are parametrically close but require circuit validation.