FEXL0430A-3R3M
cjiang (Changjiang Microelectronics Tech)
Needs validationlow risk
A strong electrical upgrade in a very similar package, suitable for non-automotive applications if footprint is verified.
Best Alternatives to FAUL0420-3R3MT
FAUL0420-3R3MT is a 3.3µH AEC-Q200 qualified power inductor in a compact 4.2x4.4mm package. While no direct automotive-grade replacement has been identified, several functional alternatives and a potential pin-compatible match exist for non-automotive applications, requiring careful engineering review.
AI replacement insight
Application riskhigh
All candidates lack the target's AEC-Q200 qualification.
Package riskmedium
Many alternatives require a different PCB layout. Even close matches need footprint verification.
Electrical risklow
Most candidates offer superior or matching electrical performance, though one has an unverified current rating.
Can it be replaced directly?
Direct replacement for FAUL0420-3R3MT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
APH0420T3R3M is a potential pin-for-pin match if current rating is verified and AEC-Q200 is not needed. FEXL0430A-3R3M is a strong electrical upgrade in a similar package.
Main risk
The primary risk is the lack of AEC-Q200 qualification in all reviewed candidates, making them unsuitable for automotive applications that require it.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | FAUL0420-3R3MT | FEXL0430A-3R3M | APH0420T3R3M | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4.2x4.4mm | 4.1mm x 4.1mm | SMD, 4.4x4.2mm | 4.1mm x 4.1mm / SMD, 4.4x4.2mm — Footprint is very similar and may fit on the same pads.; APH0420T3R3M: Package dimensions are a match for form and fit. | |
| Current A | 3.3 A | 6.6 A | 2.88A-3.3A (conflicting data) | 6.6 A / 2.88A-3.3A (conflicting data) — Significant upgrade in current handling.; APH0420T3R3M: Rated current data is conflicting; may be a downgrade. Verification required. | |
| Saturation Current A | 3.5 A | 6.2 A | 3.5 A | 6.2 A / 3.5 A — Higher saturation current provides more margin.; APH0420T3R3M: Saturation current matches target specification. | |
| Dcr Ohm | 87 mΩ | 28.6 mΩ | 87 mΩ | 28.6 mΩ / 87 mΩ — Lower DCR improves efficiency.; APH0420T3R3M: DC resistance matches, ensuring similar efficiency. | |
| Application | AEC-Q200 | Not specified | Not specified | Not specified — Candidate lacks AEC-Q200 qualification.; APH0420T3R3M: Candidate lacks AEC-Q200 qualification, a key feature of the target. |
Application & sourcing insights
Questions & answers
Verified drop-in options for FAUL0420-3R3MT 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.