SS34FA
onsemi
Needs validationlow risk
A strong upgrade with higher current (3A) and voltage (40V) ratings in the same SOD-123FL package.
Best Alternatives to MBR130LSFT1G
MBR130LSFT1G is a 30V, 1A low forward voltage Schottky rectifier in a compact SOD-123FL package, optimized for efficiency in battery-powered applications. When seeking alternatives, prioritizing candidates with a similarly low forward voltage (Vf < 0.5V) is critical to maintain performance.
AI replacement insight
Electrical riskmedium
Incorrect Vf selection can impact efficiency and thermals.
Package risklow
Many alternatives exist in the same SOD-123FL package.
Can it be replaced directly?
Direct replacement for MBR130LSFT1G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
For added robustness, consider upgrading to a 3A version like onsemi's SS34FA, which offers more current headroom in the same package.
Main risk
The primary risk when replacing this low-Vf Schottky diode is selecting a part with higher forward voltage (Vf), which will increase power dissipation and reduce circuit efficiency.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | MBR130LSFT1G | SS34FA | MBR140SFT1G | DSL34 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOD-123FL | SOD-123FL | SOD-123FL | SOD-123FL | SOD-123FL — Same package and pinout.; MBR140SFT1G: Same package and pinout.; DSL34: Same package and pinout. |
| Voltage | 30V | 40V | 40V | 40V | 40V — Higher voltage rating provides more margin.; MBR140SFT1G: Higher voltage rating provides more margin.; DSL34: Higher voltage rating provides more margin. |
| Current | 1.0A | 3.0A | 1.0A | 3.0A | 3.0A / 1.0A — Higher current rating offers improved robustness.; MBR140SFT1G: Current rating matches.; DSL34: Higher current rating offers improved robustness. |
| Vf | 0.38V @ 1A | ~0.4V @ 1A | typ 0.43V | ~0.45V @ 3A | ~0.4V @ 1A / typ 0.43V / ~0.45V @ 3A — Forward voltage is comparable, maintaining efficiency.; MBR140SFT1G: Slightly higher Vf may increase power loss.; DSL34: Forward voltage is comparable to target at 1A. |
| Temperature | -55°C to 125°C | -55°C to +125°C | -55°C to +125°C | - | -55°C to +125°C — Operating temperature range matches.; MBR140SFT1G: Operating temperature range matches. |
| Manufacturer | onsemi | - | - | R+O | R+O — Cross-vendor alternative requires validation. |
Application & sourcing insights
Questions & answers
Verified drop-in options for MBR130LSFT1G 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.