Is there a pin-compatible replacement for EEEFT1C221AP?

No, a fully verified pin-compatible replacement is not available. While some candidates share the same 6.3mm diameter footprint, they are taller and have significantly different electrical characteristics, such as lower ripple current, which requires engineering review.

What risks should I check before replacing EEEFT1C221AP?

Before replacing, you must check three main risks: 1) Package size, as substitutes may be taller or have a larger diameter. 2) Ripple current rating, as many alternatives are rated significantly lower than the target's 300mA. 3) ESR, as the target is a low-ESR part and this is critical for performance.

EEEFT1C221AP Alternatives, Datasheet & Cross Reference | PANASONIC

Finding a substitute for the Panasonic EEEFT1C221AP is challenging due to its combination of low ESR, high ripple current, and compact 6.3x5.8mm package. Alternatives often require compromises on either physical size or electrical performance.

AI replacement insight

Electrical riskhigh

Most candidates have much lower ripple current ratings, which can lead to overheating and premature failure.

Package riskmedium

Some candidates match footprint diameter but are taller, risking mechanical interference. Others are too large and require a redesign.

Can it be replaced directly?

No direct, drop-in replacement has been verified. All candidates have significant differences in package size or critical electrical parameters like ripple current.

Best replacement path

Review candidates with a 6.3mm diameter like XT220UF16V90RV0107, but only if the application can tolerate a significantly lower ripple current rating and a taller component. Otherwise, a board redesign for a larger part may be necessary.

Main risk

The primary risks are electrical performance degradation due to lower ripple current ratings and mechanical interference from different package sizes.

Recommended alternatives

Offers higher voltage but is taller and has a much lower ripple current rating, requiring circuit validation.

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Alternative comparison matrix

Feature / factor	EEEFT1C221AP	VT220UF25V167RV160	XT220UF16V90RV0107	Compatibility / risk
Package	6.3mm x 5.8mm	6.3mm x 7.7mm	6.3mm x 7.7mm	6.3mm x 7.7mm — Same diameter, but 1.9mm taller. Check mechanical clearance.; XT220UF16V90RV0107: Same diameter, but 1.9mm taller. Check mechanical clearance.
Voltage	16V	25V	16V	25V / 16V — Higher voltage rating provides more margin.; XT220UF16V90RV0107: Voltage rating matches the target.
Current	300mA	130mA	120mA	130mA / 120mA — Significantly lower ripple current. Target is 300mA.; XT220UF16V90RV0107: Significantly lower ripple current. Target is 300mA.
Esr	0.26Ω	Unknown	Unknown	Unknown — ESR not specified; target is a low ESR part (0.26Ω).; XT220UF16V90RV0107: ESR not specified; target is a low ESR part (0.26Ω).

Application & sourcing insights

Questions & answers

There is no single best alternative. If your board has vertical clearance, parts like XT220UF16V90RV0107 have a compatible footprint but a much lower ripple current rating that must be validated for your design. If performance is key, a board redesign for a larger part may be required.