SS34 SMA 50mil
Anhui Fosan Semiconductor Technology Co., Ltd.
Needs validationlow risk
A strong alternative with matching voltage, current, and package, plus a wider temperature range.
Best Alternatives to SS34G
SS34G is a versatile 40V, 3A Schottky rectifier in a standard SMA package, widely used for high-efficiency power applications. This page provides a detailed analysis of potential replacements, helping you find compatible alternatives.
AI replacement insight
Electrical riskmedium
Forward voltage (Vf) and reverse leakage (Ir) can vary. Higher Vf increases power loss.
Package risklow
Most alternatives use the standard SMA (DO-214AC) package, ensuring form-fit compatibility.
Sourcing risklow
This is a common diode type with many manufacturers, offering good availability.
Can it be replaced directly?
Direct replacement for SS34G should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
For a direct replacement, 'SS34 SMA 50mil' is the closest match. For a more robust option with higher current handling, consider 'SS54SMA' or 'SS54'.
Main risk
The primary risk when substituting is a mismatch in forward voltage (Vf), which directly impacts power dissipation and efficiency. Higher Vf can lead to overheating.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | SS34G | SS34 SMA 50mil | SS54SMA | SS56 SMA | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMA | SMA (DO-214AC) | SMA | SMA (DO-214AC) | SMA (DO-214AC) — Package is a form-fit match.; SS54SMA: Package is a form-fit match.; SS56 SMA: Package is a form-fit match.; SS310SMA: Package is a form-fit match. |
| Voltage | 40V | 40V | 40V | 60V | 40V / 60V / 100V — Reverse voltage rating is identical.; SS54SMA: Reverse voltage rating is identical.; SS56 SMA: Higher voltage rating provides more safety margin.; SS310SMA: Significantly higher voltage rating. |
| Current | 3A | 3A | 5A | 5A | 3A / 5A — Average forward current rating is identical.; SS54SMA: Higher current rating provides more design margin.; SS56 SMA: Higher current rating provides more design margin.; SS310SMA: Average forward current rating is identical. |
| Forward Voltage | 0.55V | 0.55V | 0.55V @ 3A | 0.65V @ 5A | 0.55V / 0.55V @ 3A / 0.65V @ 5A / 0.85V @ 3A — Forward voltage matches, minimizing power loss differences.; SS54SMA: Forward voltage matches at the target's rated current.; SS56 SMA: Vf is higher, which will increase power dissipation. Check thermal impact.; SS310SMA: Vf is much higher, causing ~55% more power loss. Critical thermal review required. |
| Temperature | ≤125°C | ≤150°C | ≤150°C | ≤150°C | ≤150°C / ≤125°C — Candidate has a higher maximum operating temperature.; SS54SMA: Candidate has a higher maximum operating temperature.; SS56 SMA: Candidate has a higher maximum operating temperature.; SS310SMA: Maximum operating temperature is the same. |
Application & sourcing insights
Questions & answers
Verified drop-in options for SS34G 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.