TUSD03FBX
Slkor(SLKORMICRO Elec.)
Needs validationlow risk
A pin-compatible TVS diode with matching voltage and power, and lower capacitance.
Best Alternatives to PESD03V32D-LC
PESD03V32D-LC is a 3.3V bi-directional TVS diode in a SOD-323 package. This page reviews and compares potential substitutes based on key electrical and physical parameters.
AI replacement insight
Electrical risklow
Low risk if using recommended parts like WS03DLC-B; high risk otherwise.
Package risklow
The SOD-323 package is standard, ensuring physical compatibility.
Can it be replaced directly?
Direct replacement for PESD03V32D-LC should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
WS03DLC-B or TUSD03FBX
Main risk
The primary risk is selecting a part with an incorrect working voltage or a lower power rating, which would compromise circuit protection.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | PESD03V32D-LC | TUSD03FBX | WS03DLC-B | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOD-323 | SOD-323 | SOD-323 | SOD-323 — Form and fit match.; WS03DLC-B: Form and fit match. | |
| Voltage | 3.3V | 3.3V | 3.3V | 3.3V — Working voltage matches.; WS03DLC-B: Working voltage matches. | |
| Power | 350W | 350W | 400W | 350W / 400W — Peak pulse power matches.; WS03DLC-B: Higher power rating provides more protection margin. | |
| Capacitance | 1.0pF | 0.6pF | 1.0pF | 0.6pF / 1.0pF — Lower capacitance is better for signal integrity.; WS03DLC-B: Low capacitance matches, suitable for high-speed lines. | |
| Clamping Voltage | 9V | - | 5V @ 1A | 5V @ 1A — Lower clamping voltage offers better protection. |
Application & sourcing insights
Questions & answers
Verified drop-in options for PESD03V32D-LC 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.