EEU-FC1E331LJ Equivalent & Substitute Parts

Part Overview

The EEU-FC1E331LJ is a 330 µF, 25 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This component is rated for 2000 hours at 105°C and carries AEC-Q200 automotive qualification. The part is actively produced and widely used in automotive applications requiring reliable energy storage and filtering.

Substitute parts become necessary when the primary part number reaches end-of-life status, when packaging requirements differ (tape & box versus bulk or cut tape), or when design specifications allow for alternative manufacturers while maintaining electrical and mechanical compatibility. The parts listed below share the core electrical characteristics (330 µF capacitance, 25 V rating, ±20% tolerance) and mechanical form factors that enable direct substitution in most circuit applications.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Capacitance	330	µF	Critical - must match exactly
Voltage Rating	25	V	Critical - must match or exceed
Tolerance	±20%	%	Critical - must match
Polarization	Polar	-	Critical - must match
Package Type	Radial, Can	-	Critical - determines PCB fit
Mounting Type	Through Hole	-	Critical - determines assembly method
Lead Spacing	0.138" (4.60mm)	inches (mm)	Critical - determines PCB hole pattern
Diameter	0.315"	inches	Important - affects board layout clearance
Height	0.650"	inches	Important - affects vertical clearance
Lifetime @ 105°C	2000	Hours	Important - affects reliability profile
Operating Temperature Range	-55°C to 105°C	°C	Important - defines environmental limits
RoHS Status	ROHS3 Compliant	-	Important - regulatory requirement
AEC-Q200 Rating	Yes	-	Important - automotive qualification

Substitute Part Grouping Explanation

Substitution logic for the EEU-FC1E331LJ is based on strict electrical and mechanical compatibility. All substitute parts must maintain:

Electrical Requirements:

Capacitance: 330 µF (exact match)
Voltage Rating: 25 V (exact match)
Tolerance: ±20% (exact match)
Polarization: Polar (exact match)

Mechanical Requirements:

Package: Radial, Can (exact match)
Mounting: Through Hole (exact match)
Lead Spacing: 0.138" (4.60mm) for direct PCB fit
Diameter: 0.315" (8.00mm) for clearance compatibility
Height: Variations acceptable within board layout constraints

Compliance & Ratings:

RoHS3 Compliant (required)
Operating Temperature: -55°C to 105°C (required)
AEC-Q200 automotive rating (preferred for automotive applications)

Substitute parts are grouped into three categories:

Direct Panasonic Equivalents: Parts sharing the EEU-FC base number with identical electrical specifications but different packaging formats (bulk versus tape & box) or minor height variations. These offer the highest compatibility assurance.

Similar Panasonic Variants: Parts within the EEU-FC series with identical electrical ratings but different lead spacing (0.197" versus 0.138") or physical dimensions. These require PCB layout verification before substitution.

Cross-Manufacturer Alternatives: Parts from Chemi-Con and Nichicon with matching electrical specifications and automotive qualification. These provide supply diversity while maintaining electrical performance.

Parameter Comparison

Part Number	Manufacturer	Capacitance (µF)	Voltage (V)	Tolerance (%)	Lifetime @ 105°C (Hrs)	Lead Spacing (mm)	Diameter (mm)	Height (mm)	Impedance (mOhms)	AEC-Q200	Packaging
EEU-FC1E331LJ	Panasonic	330	25	±20	2000	4.60	8.00	16.50	85	Yes	Tape & Box
EEU-FC1E331L	Panasonic	330	25	±20	2000	4.60	8.00	15.00	85	Yes	Bulk
EEU-FC1E331	Panasonic	330	25	±20	3000	5.00	10.00	12.50	90	Yes	Bulk
EEU-FC1E331B	Panasonic	330	25	±20	3000	5.00	10.00	14.60	90	Yes	Cut Tape
EEU-FC1E331LB	Panasonic	330	25	±20	2000	5.00	8.00	20.50	85	Yes	Cut Tape
ELXZ250ELL331MH15D	Chemi-Con	330	25	±20	3000	4.60	8.00	15.00	90	Yes	Bulk
UPW1E331MPD6	Nichicon	330	25	±20	3000	4.60	8.00	15.00	85	No	Bulk
ELXY250ELL331MH20D	Chemi-Con	330	25	±20	3000	4.60	8.00	21.50	95	Yes	Bulk
ELXY250ELL331MJ16S	Chemi-Con	330	25	±20	5000	5.00	10.00	17.50	84	Yes	Bulk
ELXZ250ELL331MJC5S	Chemi-Con	330	25	±20	5000	5.00	10.00	14.00	90	Yes	Bulk
UPJ1E331MPD	Nichicon	330	25	±20	3000	4.60	8.00	21.00	130	No	Bulk

Engineering Selection Recommendations

For Direct Replacement (Identical PCB Fit):

EEU-FC1E331L is the primary direct substitute. It maintains identical electrical specifications (330 µF, 25 V, ±20%, 2000 Hrs @ 105°C) and mechanical dimensions (4.60mm lead spacing, 8.00mm diameter) with only a 1.50mm height reduction (15.00mm versus 16.50mm). This part is available in bulk packaging and carries full AEC-Q200 automotive qualification. Height reduction does not affect functionality and may improve board layout clearance.

ELXZ250ELL331MH15D (Chemi-Con) provides equivalent performance with extended 3000-hour lifetime at 105°C while maintaining identical lead spacing and diameter. This part is AEC-Q200 qualified for automotive applications and offers improved reliability margin over the original 2000-hour specification.

For Applications Allowing Lead Spacing Variation:

EEU-FC1E331 and EEU-FC1E331B (Panasonic) offer 3000-hour lifetime ratings with 5.00mm lead spacing and 10.00mm diameter. These parts require PCB redesign to accommodate different hole patterns but provide enhanced reliability. Both carry AEC-Q200 automotive qualification.

ELXY250ELL331MJ16S and ELXZ250ELL331MJC5S (Chemi-Con) provide the highest reliability with 5000-hour lifetime ratings at 105°C. Both are AEC-Q200 qualified and suitable for demanding automotive applications where extended operational life is required. These parts require PCB layout verification due to different lead spacing (5.00mm) and physical dimensions.

For General Purpose Applications (Non-Automotive):

UPW1E331MPD6 (Nichicon) matches the original part's lead spacing and diameter with 3000-hour lifetime. This part lacks AEC-Q200 automotive qualification and is rated for general purpose applications. Use only when automotive qualification is not required.

UPJ1E331MPD (Nichicon) is marked "Not For New Designs" and carries higher impedance (130 mOhms versus 85 mOhms). This part should be avoided for new designs despite meeting electrical specifications.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance and operate across the -55°C to 105°C temperature range. Verify that selected substitute meets specific application requirements for automotive qualification (AEC-Q200) before final selection.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC1E331L be used as a direct replacement for EEU-FC1E331LJ?

A: Yes. Both parts share identical electrical specifications (330 µF, 25 V, ±20%, 2000 Hrs @ 105°C) and mechanical dimensions (4.60mm lead spacing, 8.00mm diameter). The only difference is packaging format (bulk versus tape & box) and a 1.50mm height reduction (15.00mm versus 16.50mm). The height reduction does not affect electrical performance and typically improves board layout clearance.

Q: What is the significance of lead spacing differences between 4.60mm and 5.00mm?

A: Lead spacing determines the PCB hole pattern and cannot be changed without PCB redesign. Parts with 4.60mm spacing (EEU-FC1E331LJ, EEU-FC1E331L, ELXZ250ELL331MH15D, ELXY250ELL331MH20D, UPW1E331MPD6, UPJ1E331MPD) fit existing PCB layouts designed for the original part. Parts with 5.00mm spacing (EEU-FC1E331, EEU-FC1E331B, EEU-FC1E331LB, ELXY250ELL331MJ16S, ELXZ250ELL331MJC5S) require PCB modification and are suitable only for new designs or redesigned boards.

Q: Why do some substitutes have longer lifetime ratings (3000 or 5000 hours versus 2000 hours)?

A: Extended lifetime ratings indicate improved internal design and materials that reduce degradation at elevated temperatures. A 3000-hour or 5000-hour rated part provides greater reliability margin and longer operational life under identical conditions. These parts are direct electrical substitutes and can be used in place of 2000-hour rated parts without circuit modification.

Q: Is AEC-Q200 qualification required for all applications?

A: AEC-Q200 qualification is mandatory for automotive applications and strongly recommended for any application subject to automotive environmental standards. For non-automotive general purpose applications, parts without AEC-Q200 qualification (UPW1E331MPD6, UPJ1E331MPD) may be acceptable if other specifications match. Verify application requirements before selecting non-qualified parts.

Q: Can I use a part with higher impedance (130 mOhms) as a substitute for the original (85 mOhms)?

A: Higher impedance increases voltage drop and heat generation under ripple current conditions. UPJ1E331MPD carries 130 mOhms impedance compared to 85 mOhms in the original part. This part is marked "Not For New Designs" and should be avoided. Use only if no other substitute is available and circuit analysis confirms acceptable performance with increased impedance.

Q: What packaging formats are available and how do they affect procurement?

A: Tape & Box (TB) is the original format for EEU-FC1E331LJ. Bulk packaging offers lower cost for large quantities but requires manual handling. Cut Tape (CT) provides intermediate quantities with automated handling capability. Select packaging based on assembly volume and handling requirements. All formats contain identical components with identical electrical performance.

Q: Can Chemi-Con and Nichicon parts be mixed with Panasonic parts in the same design?

A: Yes, provided all parts meet the same electrical specifications (330 µF, 25 V, ±20%, matching lead spacing and diameter) and required certifications (AEC-Q200 for automotive). Cross-manufacturer substitution is acceptable for supply chain flexibility. Verify that all parts carry required compliance certifications before mixing manufacturers in production designs.

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