BZT52B15S
Yangjie Technology
Needs validationlow risk
A 15V Zener diode in the same SOD-323 package with matching power rating and tighter voltage tolerance.
Best Alternatives to MM3Z15
MM3Z15 is a common 15V, 200mW Zener diode in a SOD-323 package. Several alternatives exist, with BZT52B15S from Yangjie Technology offering a strong pin-compatible match.
AI replacement insight
Electrical risklow
Key electricals match or are improved. Minor parameters like leakage should be checked.
Package risklow
Package is identical, ensuring form and fit compatibility.
Can it be replaced directly?
Direct replacement for MM3Z15 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
BZT52B15S offers a direct replacement path with an improved voltage tolerance.
Main risk
The primary risk, although low, is ensuring subtle parametric differences like dynamic impedance or leakage current do not affect circuit performance.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | MM3Z15 | BZT52B15S | BZT52C16S | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOD-323 | SOD-323 | SOD-323 | SOD-323 — Same package ensures form-fit compatibility.; BZT52C16S: Same package ensures form-fit compatibility. | |
| Voltage | 15V | 15V | 16V | 15V / 16V — Nominal Zener voltage is identical.; BZT52C16S: Higher nominal voltage requires circuit tolerance check. | |
| Power | 200mW | 200mW | 200mW | 200mW — Power dissipation rating is identical.; BZT52C16S: Power dissipation rating is identical. | |
| Tolerance | ±5% | ±2% | - | ±2% — Candidate has tighter voltage tolerance, which is an upgrade. | |
| Impedance | 30 Ω | 30 Ohms | 40 Ohms | 30 Ohms / 40 Ohms — Maximum Zener impedance matches target.; BZT52C16S: Higher impedance may affect regulation performance. |
Application & sourcing insights
Questions & answers
Verified drop-in options for MM3Z15 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.