
DOWO
A 13V, 5W Zener diode in a matching SMB package from a different manufacturer.
Find the best alternatives for the SMBJ5350B, a 13V 5W Zener diode in an SMB package. This guide reviews pin-compatible options and functional alternatives to help with your design and sourcing needs.
For pin-compatible options, secondary parameters need checking. Parametric options have known voltage differences.
The best candidates use the same SMB package, minimizing layout changes.
Direct replacement for SMBJ5350B should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
The strongest candidate is SMB5350B, which matches the package, voltage, and power rating. As a cross-vendor part, datasheet review is essential.
The primary risk is ensuring minor electrical parameter differences between manufacturers do not affect circuit performance. For parametric alternatives, the voltage difference is the main concern.

DOWO
A 13V, 5W Zener diode in a matching SMB package from a different manufacturer.
| Feature / factor | SMBJ5350B | SMB5350B | SMBJ5349B | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMB (DO-214AA) | SMB/DO-214AA | SMB (DO-214AA) | SMB/DO-214AA / SMB (DO-214AA) — Matches target package.; SMBJ5349B: Package matches. | |
| Voltage | 13.0V | 13.0V | 12.0V | 13.0V / 12.0V — Zener voltage matches.; SMBJ5349B: Lower Zener voltage. | |
| Power | 5.0W | 5.0W | 5.0W | 5.0W — Power rating matches.; SMBJ5349B: Power rating matches. | |
| Manufacturer | Slkor(SLKORMICRO Elec.) | DOWO | - | DOWO — Cross-vendor alternative. |
Verified drop-in options for SMBJ5350B 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.