EEU-FC1E221 Equivalent & Substitute Parts

Part Overview

The EEU-FC1E221 is a 220 µF, 25 V aluminum electrolytic capacitor manufactured by Panasonic Electronic Components in the FC series. This radial, through-hole component is rated for 2000 hours at 105°C and meets AEC-Q200 automotive specifications. The part is currently active and available in bulk packaging with 1038 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design requirements call for enhanced performance characteristics such as extended lifetime ratings or improved electrical properties.

Key Parameters

Parameter	Value
Capacitance	220 µF
Voltage Rating	25 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Lead Spacing	0.138" (4.60mm)
Case Diameter	0.315" (8.00mm)
Height	0.453" (11.50mm)
Mounting Type	Through Hole
Package Type	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the EEU-FC1E221 is determined by the following critical parameters:

Primary Substitution Criteria:

Capacitance: 220 µF (exact match required)
Voltage Rating: 25 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Mounting Type: Through Hole (exact match required)
Package Type: Radial, Can (exact match required)

Secondary Compatibility Parameters:

Operating Temperature Range: -55°C ~ 105°C (must meet or exceed)
Lead Spacing: 0.138" (4.60mm) preferred for direct PCB fit; 0.197" (5.00mm) acceptable with board redesign
Case Diameter: 0.315" (8.00mm) preferred; 0.394" (10.00mm) acceptable with mechanical clearance verification
Height: Variations acceptable within mechanical envelope constraints

Performance Enhancement Parameters:

Lifetime @ 105°C: 2000 Hrs minimum; extended ratings (3000 Hrs, 5000 Hrs) provide improved reliability margins
Impedance: Lower values indicate better high-frequency performance
Ripple Current: Higher ratings provide greater thermal margin

Substitute parts are grouped into three categories: direct equivalents (identical electrical and mechanical specifications), compatible substitutes (matching critical parameters with acceptable dimensional variations), and performance upgrades (enhanced lifetime or electrical characteristics).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Lifetime @ 105°C	Lead Spacing	Height	Impedance	AEC-Q200	Product Status	Inventory
EEU-FC1E221	Panasonic	220 µF	25 V	2000 Hrs	0.138" (4.60mm)	0.453" (11.50mm)	117 mOhms	Yes	Active	1038 Pcs
EEU-FC1E221B	Panasonic	220 µF	25 V	2000 Hrs	0.197" (5.00mm)	0.650" (16.50mm)	117 mOhms	Yes	Active	1479 Pcs
EEU-FC1E221BJ	Panasonic	220 µF	25 V	2000 Hrs	0.138" (4.60mm)	0.492" (12.50mm)	117 mOhms	Yes	Active	10247 Pcs
ELXZ250ELL221MH12D	Chemi-Con	220 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.531" (14.60mm)	120 mOhms	Yes	Active	13002 Pcs
ELXY250ELL221MH15D	Chemi-Con	220 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.650" (16.50mm)	130 mOhms	Yes	Active	1204 Pcs
SEK221M025ST	Cornell Dubilier Electronics	220 µF	25 V	2000 Hrs	0.138" (4.60mm)	0.433" (11.00mm)	970 mOhms	No	Active	1751 Pcs
UPJ1E221MPD	Nichicon	220 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.630" (16.00mm)	180 mOhms	No	Not For New Designs	5512 Pcs
UPJ1E221MPD6	Nichicon	220 µF	25 V	5000 Hrs	0.197" (5.00mm)	0.551" (14.00mm)	210 mOhms	No	Not For New Designs	2989 Pcs
UPM1E221MPD	Nichicon	220 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.650" (16.50mm)	110 mOhms	Yes	Not For New Designs	4398 Pcs
UPM1E221MPD6	Nichicon	220 µF	25 V	5000 Hrs	0.197" (5.00mm)	0.571" (14.50mm)	130 mOhms	Yes	Not For New Designs	12129 Pcs
UPW1E221MPD	Nichicon	220 µF	25 V	3000 Hrs	0.138" (4.60mm)	0.453" (11.50mm)	117 mOhms	No	Not For New Designs	3200 Pcs

Engineering Selection Recommendations

Direct Equivalents (No Design Changes Required):

EEU-FC1E221BJ is the primary direct equivalent. It matches all critical electrical parameters and maintains identical lead spacing and case diameter as the main part. The marginal height increase (0.492" vs 0.453") is negligible for most applications. This part carries AEC-Q200 certification and active product status, with the highest inventory availability (10247 units).

Compatible Substitutes (Mechanical Accommodation Required):

EEU-FC1E221B is electrically identical but features increased lead spacing (0.197" vs 0.138") and height (0.650" vs 0.453"). PCB redesign is necessary to accommodate the wider lead pitch. This part maintains AEC-Q200 certification and active status with 1479 units available.

Performance-Enhanced Substitutes (Automotive Applications):

ELXZ250ELL221MH12D (Chemi-Con) and ELXY250ELL221MH15D (Chemi-Con) provide extended 3000-hour lifetime ratings while maintaining AEC-Q200 automotive certification and active product status. Both support the original 0.138" lead spacing. ELXZ250ELL221MH12D offers superior inventory (13002 units) and minimal height increase (0.531" vs 0.453"). These parts are suitable for designs requiring enhanced thermal reliability margins.

Legacy Alternatives (Not Recommended for New Designs):

UPJ1E221MPD, UPJ1E221MPD6, UPM1E221MPD, UPM1E221MPD6, and UPW1E221MPD carry "Not For New Designs" status. While electrically compatible, these parts should be used only for legacy system maintenance or when new-design alternatives are unavailable. UPM1E221MPD and UPM1E221MPD6 retain AEC-Q200 certification despite their legacy status.

General Purpose Alternative:

SEK221M025ST (Cornell Dubilier Electronics) is electrically compatible but lacks AEC-Q200 certification and features significantly higher impedance (970 mOhms vs 117 mOhms). This part is suitable only for non-automotive general-purpose applications where automotive qualification is not required.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC1E221B be used as a direct replacement for EEU-FC1E221?

A: EEU-FC1E221B is electrically equivalent but requires PCB modification. The lead spacing increases from 0.138" to 0.197", and height increases from 0.453" to 0.650". Direct socket substitution is not possible without board redesign.

Q: What is the difference between EEU-FC1E221 and EEU-FC1E221BJ?

A: Both parts are manufactured by Panasonic with identical electrical specifications and AEC-Q200 certification. The primary difference is packaging format: EEU-FC1E221 is supplied in bulk, while EEU-FC1E221BJ is supplied in cut tape. Height varies slightly (0.453" vs 0.492"), which is negligible for most applications. EEU-FC1E221BJ offers significantly higher inventory availability.

Q: Are Chemi-Con ELXZ250ELL221MH12D and ELXY250ELL221MH15D suitable for automotive applications?

A: Yes. Both parts carry AEC-Q200 certification and active product status. ELXZ250ELL221MH12D is preferred due to lower impedance (120 mOhms vs 130 mOhms) and superior inventory availability (13002 units). Both provide extended 3000-hour lifetime ratings compared to the original 2000-hour specification.

Q: Why do some substitute parts show "Not For New Designs" status?

A: Parts marked "Not For New Designs" are legacy components retained for existing system support. While electrically functional, they should not be selected for new product development. Active alternatives with current product status should be prioritized.

Q: Can Nichicon UPJ1E221MPD6 replace EEU-FC1E221 in automotive designs?

A: UPJ1E221MPD6 is electrically compatible but carries "Not For New Designs" status and lacks AEC-Q200 certification. For automotive applications, use AEC-Q200 certified alternatives such as EEU-FC1E221BJ, ELXZ250ELL221MH12D, or UPM1E221MPD6 instead.

Q: What is the significance of impedance differences among substitute parts?

A: Impedance affects high-frequency performance and thermal behavior. Lower impedance values (117-120 mOhms) indicate better ripple current handling and reduced heat generation. SEK221M025ST exhibits significantly higher impedance (970 mOhms), making it unsuitable for high-ripple-current applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. Environmental compliance is maintained across all alternatives.

Q: Which substitute offers the best reliability for extended-life applications?

A: UPJ1E221MPD6 and UPM1E221MPD6 both provide 5000-hour lifetime ratings at 105°C, compared to the original 2000-hour specification. For automotive applications, UPM1E221MPD6 is preferred due to AEC-Q200 certification and active product status, despite its "Not For New Designs" designation for new development.

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