
LRC
Offers the same 12V Zener voltage and SOD-523 package with a higher power rating, making it a robust potential alternative.
BZX584C12 is a 12V, 150mW Zener diode in a compact SOD-523 package. This page provides analysis of potential substitutes and cross-references for your design.
Low for candidates with matched 12V Zener voltage. Medium for parametric alternatives.
Low, as several candidates use the same SOD-523 package.
Depends on regional availability and distributor stock for each candidate.
Direct replacement for BZX584C12 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The most promising path is LM5Z12VT1G, which matches key electricals and package with an improved power rating.
The main risk is using a part with a different Zener voltage, such as 11V or 15V, which could cause circuit malfunction.

LRC
Offers the same 12V Zener voltage and SOD-523 package with a higher power rating, making it a robust potential alternative.
| Feature / factor | BZX584C12 | LM5Z12VT1G | BZX584C11 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOD-523 | SOD-523 | SOD-523 | SOD-523 — Package matches, enabling form-fit compatibility.; BZX584C11: Package matches, enabling form-fit compatibility. | |
| Voltage | 12.0V | 12.0V | 11V | 12.0V / 11V — Zener voltage is identical, ensuring functional equivalence.; BZX584C11: Zener voltage is 1V lower; requires circuit tolerance check. | |
| Power | 150mW | 200mW | 150mW | 200mW / 150mW — Higher power rating provides increased thermal margin.; BZX584C11: Power dissipation rating is identical. | |
| Current | 5mA | Not in catalog | 5mA | Not in catalog / 5mA — Test current (Izt) missing from catalog data; datasheet confirms 5mA match.; BZX584C11: Test current matches. |
Verified drop-in options for BZX584C12 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.