SSL34F
GOODWORK
Needs validationmedium risk
SSL34F is a same-package Schottky candidate with reduced temperature range.
Best Alternatives to SS34F
SS34F is a 40V 3A SMAF Schottky rectifier. Closest substitutes must verify SMAF footprint, diode pinout, surge current and leakage.
AI replacement insight
Electrical riskmedium
Some options have weaker surge, leakage or temp.
Package riskhigh
SS34FA and B340A are not SMAF.
Firmware risklow
Discrete diode; no firmware.
Sourcing riskmedium
SS34F-HF is not indexed.
Can it be replaced directly?
No catalog-verified pin-compatible replacement is confirmed here.
Best replacement path
Use SS34F-HF as the closest external path after ingestion; use B340AF only if lower surge is acceptable.
Main risk
Package fit and surge-current margin are the main risks.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | SS34F | B340AF | SSL34F | SS34FA | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMAF | SMAF | SMAF | SOD-123FL | SMAF / SOD-123FL / SMA/DO-214AC — catalog; SSL34F: catalog; SS34FA: board change; B340A: not same fit |
| Pinout | 2-pin diode | 2-pin | 2-pin in ES | 2-pin SOD-123FL | 2-pin / 2-pin in ES / 2-pin SOD-123FL / 2-pin SMA — function not shown; SSL34F: snapshot has 0; SS34FA: footprint differs; B340A: footprint differs |
| Voltage | 40V | 40V | 40V | 40V | 40V — no extra margin; SSL34F: no extra margin; SS34FA: no extra margin; B340A: no extra margin |
| Current | 3A, 80A surge | 3A, 40A surge | 3A, web 80A | 3A, 80A surge | 3A, 40A surge / 3A, web 80A / 3A, 80A surge / 3A, 80-100A surge — surge derating; SSL34F: verify exact mfg; SS34FA: web claim; B340A: verify mfg |
| Temperature | -65..150C | -55..150C | -55..125C | -55..125C | -55..150C / -55..125C / -50..150C — cold limit; SSL34F: range reduced; SS34FA: range reduced; B340A: cold limit |
Application & sourcing insights
Questions & answers
SS34F-HF is the closest external SMAF 40V 3A candidate, but it needs catalog and pinout validation.