B110WS
MDD(Microdiode Semiconductor)
Needs validationlow risk
A major upgrade path, this Schottky diode has much higher voltage (100V) and current (1A) ratings in the same package.
Best Alternatives to BAT54JFILM
The BAT54JFILM is a 40V, 300mA Schottky diode in a compact SOD-323 package. Several functional alternatives and upgrade paths are available, offering compatible packages and equal or superior electrical ratings, making substitution feasible with careful engineering review.
AI replacement insight
Electrical riskmedium
Forward voltage (Vf) and reverse leakage current (Ir) can vary between manufacturers and affect circuit performance. Verification is required.
Package risklow
All suggested alternatives use the same SOD-323 package, making them physically compatible. Pinout is standard for a 2-pin diode but should be confirmed.
Sourcing risklow
Some alternatives like B5819WS are common parts available from multiple manufacturers, potentially improving supply chain resilience.
Can it be replaced directly?
Yes, several functional alternatives exist for the BAT54JFILM. Parts like B5819WS and 1N5819WS S4 are Schottky diodes in the same SOD-323 package with similar or better ratings, but require engineering review.
Best replacement path
For a robust replacement, consider an upgrade path part like B16WS, which offers higher voltage (60V) and current (1A) ratings in the same SOD-323 package. For a closer parametric match, 1N5819WS S4 is a strong candidate.
Main risk
The primary risk is a mismatch in forward voltage (Vf) at the specific operating current, which can affect power efficiency and thermal performance.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | BAT54JFILM | B110WS | B16WS | B5819WS | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOD-323 | SOD-323 | - | - | SOD-323 — Package matches, enabling form-fit compatibility. |
| Diode Type | Schottky | Schottky | - | - | Schottky — Functional type matches target. |
| Voltage | 40V | 100V | - | - | 40V — Voltage rating matches, no additional margin. |
| Current | 0.3A | 1.0A | - | - | 1.0A — Higher current rating provides more robustness. |
| Forward Voltage | 900mV @ 100mA | - | - | 600-900mV @ 1A | — |
Application & sourcing insights
Questions & answers
The best alternative depends on your design needs. For a robust upgrade, B16WS offers higher voltage and current ratings. For a very close parametric match, 1N5819WS S4 is an excellent choice. Both require datasheet review.