EEU-FC1A331B Equivalent & Substitute Parts

Part Overview

The EEU-FC1A331B is a 330 µF, 10 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This component is rated for 2000 hours at 105°C and meets AEC-Q200 automotive standards. The part is actively produced and widely used in automotive applications requiring reliable energy storage and filtering.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when packaging requirements differ, or when design specifications allow for alternative manufacturers meeting identical electrical and mechanical parameters.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00mm)
Diameter	0.315" (8.00mm)
Height	0.650" (16.50mm)
RoHS Status	ROHS3 Compliant
AEC-Q200 Rating	Yes

Substitute Part Grouping Explanation

Substitution eligibility for the EEU-FC1A331B is determined by the following critical parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 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)
Operating Temperature Range: -55°C ~ 105°C (exact match required)
RoHS3 Compliance: Required for automotive applications

Parts meeting all electrical parameters are grouped as direct substitutes. Variations in lead spacing, physical dimensions, lifetime ratings, ripple current specifications, and impedance are secondary parameters that may affect PCB layout compatibility and performance characteristics but do not disqualify substitution when primary parameters align.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Lead Spacing	Diameter	Height	Impedance	Product Status	RoHS3
EEU-FC1A331B	Panasonic	330 µF	10 V	±20%	2000 Hrs	0.197" (5.00mm)	0.315" (8.00mm)	0.650" (16.50mm)	117 mOhms	Active	Yes
EEU-FC1A331	Panasonic	330 µF	10 V	±20%	2000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.453" (11.50mm)	117 mOhms	Active	Yes
ELXY100ELL331MH12D	Chemi-Con	330 µF	10 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.531" (14.60mm)	170 mOhms	Active	Yes
ELXZ100ELL331MF15D	Chemi-Con	330 µF	10 V	±20%	2000 Hrs	0.098" (2.50mm)	0.248" (6.30mm)	0.650" (16.50mm)	180 mOhms	Active	Yes
UPM1A331MPD	Nichicon	330 µF	10 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	160 mOhms	Not For New Designs	Yes
UPV1A331MGD	Nichicon	330 µF	10 V	±20%	5000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.512" (13.00mm)	270 mOhms	Not For New Designs	Yes
UPW1A331MPD	Nichicon	330 µF	10 V	±20%	3000 Hrs	0.138" (4.60mm)	0.315" (8.00mm)	0.453" (11.50mm)	117 mOhms	Not For New Designs	Yes

Engineering Selection Recommendations

Primary Recommendation: EEU-FC1A331

The EEU-FC1A331 from Panasonic is the preferred substitute. It maintains active product status, identical electrical specifications, and RoHS3 compliance. The primary difference is reduced lead spacing (0.138" vs. 0.197") and lower profile height (0.453" vs. 0.650"), which may require PCB layout adjustment but does not affect electrical performance.

Secondary Recommendations: ELXY100ELL331MH12D and UPW1A331MPD

Both parts meet all critical electrical parameters with active or legacy status. ELXY100ELL331MH12D offers extended lifetime (3000 hours) at the cost of increased impedance. UPW1A331MPD provides identical impedance to the main part with reduced lead spacing and height.

Alternative Option: ELXZ100ELL331MF15D

This Chemi-Con part meets all electrical requirements but features the smallest physical footprint (0.248" diameter, 0.098" lead spacing). Selection requires verification of PCB layout compatibility due to significantly reduced dimensions.

Not Recommended for New Designs: UPM1A331MPD and UPV1A331MGD

Both Nichicon parts carry "Not For New Designs" status. While electrically compatible, these parts should be reserved for legacy system maintenance or replacement applications only.

Frequently Asked Questions (FAQ)

Q: Can I use EEU-FC1A331 as a direct replacement for EEU-FC1A331B?

A: Yes. Both parts share identical electrical specifications (330 µF, 10 V, ±20%, 2000 Hrs @ 105°C, RoHS3). The primary difference is lead spacing (4.60mm vs. 5.00mm) and height (11.50mm vs. 16.50mm). PCB layout must accommodate the reduced dimensions.

Q: What is the significance of "Not For New Designs" status?

A: Parts marked "Not For New Designs" (UPM1A331MPD, UPV1A331MGD) are legacy components suitable only for replacement in existing systems. New product designs should use active-status alternatives such as EEU-FC1A331 or ELXY100ELL331MH12D.

Q: Does increased lifetime rating affect substitution compatibility?

A: No. Lifetime rating (2000 Hrs, 3000 Hrs, or 5000 Hrs @ 105°C) is a performance enhancement, not a compatibility requirement. Parts with longer lifetimes are suitable substitutes for applications requiring the minimum specified lifetime.

Q: Are there packaging differences between these parts?

A: Yes. EEU-FC1A331B is supplied in Tape & Box packaging, while most substitutes are supplied in Bulk packaging. This affects procurement and handling but does not impact electrical or mechanical compatibility.

Q: Can I substitute a part with different lead spacing?

A: Lead spacing substitution requires PCB layout verification. The EEU-FC1A331B uses 5.00mm spacing; most substitutes use 4.60mm or 2.50mm spacing. Verify that the PCB footprint accommodates the selected part's lead configuration before implementation.

Q: Is AEC-Q200 rating required for all substitutes?

A: The main part (EEU-FC1A331B) carries AEC-Q200 automotive certification. Substitutes ELXY100ELL331MH12D and ELXZ100ELL331MF15D also meet AEC-Q200. Nichicon parts do not list AEC-Q200 rating; verify compliance requirements for your specific application.

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