FNR4030S120MT
cjiang (Changjiang Microelectronics Tech)
Needs validationmedium risk
Package-compatible family member with similar inductance, but lower current ratings pose a downgrade risk.
Best Alternatives to FNR4030S100MT
FNR4030S100MT is a 10µH shielded power inductor from cjiang in a 4x4x3mm package, rated for 1.6A. Alternatives exist but require careful review of inductance and current ratings.
AI replacement insight
Electrical riskmedium
Inductance or current rating mismatches require engineering validation.
Package risklow
Several candidates share the same 4x4mm footprint, ensuring physical compatibility.
Can it be replaced directly?
No, a direct, fully equivalent replacement for the FNR4030S100MT is not available among the candidates reviewed. All options have parametric differences.
Best replacement path
FNR4030S120MT is the closest option if the circuit's current is well below the 1.4A Irms rating. Otherwise, a redesign for a different inductance value may be needed.
Main risk
The primary risks are either lower current handling capability (FNR4030S120MT) or a significant change in inductance (other candidates), affecting circuit performance.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | FNR4030S100MT | FNR4030S120MT | YNR4030-4R7M | FHD4020S-6R8MT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4030 (4x4x3mm) | 4030 (4x4x3mm) | - | - | 4020 (4x4x2mm) — Footprint matches, lower height is compatible. |
| Inductance | 10 µH | 12 µH | - | - | 6.8 µH — Lower inductance will alter circuit behavior. |
| Current | 1.6 A | 1.8 A | - | - | 2.8 A — Higher heat rating current (Irms). |
| Resistance | 150 mΩ | 175 mΩ | - | - | 78 mΩ — Much lower max DCR improves efficiency. |
Application & sourcing insights
Questions & answers
The best alternative depends on your design's flexibility. FNR4030S120MT is a near-match if lower current ratings are acceptable. If your circuit can tolerate lower inductance, YNR4030-4R7M offers better current and DCR in the same package.