SS24A
Yangzhou Yangjie Electronic Technology Co.,Ltd
Needs validationlow risk
A strong pin-compatible alternative with nearly identical voltage and forward drop, and a higher current rating.
Best Alternatives to VS-15MQ040NTRPBF
The VS-15MQ040NTRPBF is a 1.5A, 40V Schottky rectifier in a compact SMA package, valued for its extremely low forward voltage drop. Finding a replacement requires careful matching of this low Vf characteristic to maintain circuit efficiency.
AI replacement insight
Electrical riskmedium
Forward voltage (Vf) is a critical parameter for efficiency; many alternatives have a higher Vf.
Package risklow
The DO-214AC (SMA) package is very common, ensuring good physical compatibility.
Sourcing risklow
This is a common type of diode with many manufacturers and available options.
Can it be replaced directly?
Direct replacement for VS-15MQ040NTRPBF should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
SS24A is the most direct functional replacement due to its closely matched voltage and forward voltage characteristics.
Main risk
The primary risk is selecting a substitute with a higher forward voltage (Vf), which would increase power dissipation and reduce system efficiency.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | VS-15MQ040NTRPBF | SS24A | SK56A-LTP | SS315 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DO-214AC (SMA) | DO-214AC (SMA) | DO-214AC (SMA) | DO-214AC (SMA) | DO-214AC (SMA) — Same package and pin count.; SK56A-LTP: Same package and pin count.; SS315: Same package and pin count.; SS38: Same package and pin count. |
| Voltage | 40V | 40V | 60V | 150V | 40V / 60V / 150V / 80V — Identical voltage rating. Ensure application has sufficient margin.; SK56A-LTP: Higher voltage rating provides more design margin.; SS315: Much higher voltage rating provides significant margin.; SS38: Higher voltage rating provides more design margin. |
| Current | 1.5A | 2.0A | 5.0A | 3.0A | 2.0A / 5.0A / 3.0A — Slightly higher current rating provides margin.; SK56A-LTP: Higher current rating provides more design margin.; SS315: Higher current rating provides more design margin.; SS38: Higher current rating provides more design margin. |
| Forward Voltage | 0.43V @ 2A | 0.50V @ 2A | 0.75V @ 5A | Unknown | 0.50V @ 2A / 0.75V @ 5A / Unknown / 0.85V @ 3A — Very close to target's low forward voltage.; SK56A-LTP: Likely higher forward voltage drop than target's 0.43V. Verify datasheet.; SS315: Likely much higher Vf due to 150V rating. Must verify from datasheet.; SS38: Significantly higher forward voltage drop than target's 0.43V. Verify datasheet. |
Application & sourcing insights
Questions & answers
Verified drop-in options for VS-15MQ040NTRPBF 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.