FHD4020S-3R3MT
cjiang (Changjiang Microelectronics Tech)
Needs validationmedium risk
Same package with higher current ratings, but lower inductance requires review.
Best Alternatives to FHD4020S-4R7MT
FHD4020S-4R7MT is a 4.7µH shielded power inductor in a 4x4mm package, rated for 3.3A (Irms). Finding a replacement requires matching inductance, current ratings, and DCR.
AI replacement insight
Electrical riskhigh
Inductance mismatch is the primary concern and requires circuit validation.
Package risklow
The 4020 package is standard and alternatives share the same footprint.
Firmware risklow
Not applicable for a passive component like an inductor.
Can it be replaced directly?
No direct replacement with identical 4.7µH inductance was found. Alternatives require engineering review for inductance and current rating differences.
Best replacement path
Use another part from the cjiang FHD4020S series, like FHD4020S-3R3MT, which offers higher current ratings but requires verifying the impact of its lower 3.3µH inductance.
Main risk
The main risk is circuit instability or failure due to mismatched inductance, which affects the performance of DC-DC converters and filter circuits.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | FHD4020S-4R7MT | FHD4020S-3R3MT | FHD4020S-6R8MT | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Inductance | 4.7 µH | 3.3 µH | - | 6.8 µH — Higher inductance may alter circuit behavior. | |
| Current | 3.3 A | 5.9 A | - | 4.2 A — Lower saturation current is a downgrade risk. | |
| Resistance | 115 mΩ max | 73 mΩ typ | - | 130 mΩ typ — Higher DCR reduces efficiency. | |
| Package | 4.0x4.0x2.0mm | 4.0x4.0x2.0mm | - | 4.0x4.0x2.0mm — Same footprint and height. |
Application & sourcing insights
Questions & answers
FHD4020S-3R3MT is a strong candidate. It has the same package and higher current ratings, but its 3.3µH inductance requires circuit validation.