FM55X474K631EFG
Prosperity Dielectrics Co., Ltd.
Needs validationhigh risk
A same-size X7R MLCC candidate with higher voltage but much lower capacitance.
Best Alternatives to FS55X225K251EGG
FS55X225K251EGG is a 2.2uF 250V X7R 2220 MLCC. Listed alternatives need review because none match the capacitance.
AI replacement insight
Electrical riskhigh
capacitance downgrade
Package riskmedium
2220 metric varies
Firmware risklow
passive MLCC
Sourcing riskmedium
lifecycle mixed
Can it be replaced directly?
No pin-compatible direct replacement is supported by the provided evidence.
Best replacement path
Use same-series 2220 X7R parts only after capacitance margin review.
Main risk
All kept candidates have much lower capacitance.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | FS55X225K251EGG | FM55X474K631EFG | FM55X474K501EFG | FM55X334K631EFG | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2220 (5763) | 2220 (5763) | 2220 (5750) | 2220 (5750) | 2220 (5763) / 2220 (5750) — same case text; FM55X474K501EFG: 2220 family; FM55X334K631EFG: 2220 family |
| Pinout | 2 pins | 2 pins | 2 pins | 2 pins | 2 pins — pinout not checked; FM55X474K501EFG: pinout not checked; FM55X334K631EFG: pinout not checked |
| Voltage | 250V | 630V | 500V | 630V | 630V / 500V — rating higher; FM55X474K501EFG: rating higher; FM55X334K631EFG: rating higher |
| Application | 2.2uF X7R | 470nF X7R | 470nF X7R | 330nF X7R | 470nF X7R / 330nF X7R — cap far lower; FM55X474K501EFG: cap far lower; FM55X334K631EFG: cap far lower |
| Tolerance | ±10% | ±10% | ±10% | ±10% | ±10% — same tolerance; FM55X474K501EFG: same tolerance; FM55X334K631EFG: same tolerance |
Application & sourcing insights
Questions & answers
FM55X474K631EFG is the closest kept option, but it is not direct because capacitance is much lower.