EEU-FC1H331 Equivalent & Substitute Parts

Part Overview

The EEU-FC1H331 is a 330 µF, 50 V aluminum electrolytic capacitor in radial configuration manufactured by Panasonic Electronic Components. This through-hole component is rated for 5000 hours at 105°C and meets AEC-Q200 automotive specifications. The part is currently active in production with 1055 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when packaging requirements differ, or when design specifications allow for higher voltage ratings or alternative manufacturers while maintaining core electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	50 V
Tolerance	±20%
Lifetime	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.197" (5.00 mm)
Can Diameter	0.492" (12.50 mm)
Height	0.787" (20.00 mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Substitution Criteria (Must Match):

Capacitance: 330 µF (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 Criteria (Flexible Within Limits):

Voltage Rating: 50 V minimum (higher ratings acceptable for drop-in replacement)
Operating Temperature: -55°C ~ 105°C minimum range
Lead Spacing: 0.197" (5.00 mm) preferred for direct PCB compatibility
Can Diameter: 0.492" (12.50 mm) preferred for mechanical fit
Height: Variations acceptable if PCB clearance permits

Compliance Considerations:

RoHS3 compliance required for new designs
AEC-Q200 rating preferred for automotive applications
Product status affects suitability for new designs versus legacy support

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage	Tolerance	Lead Spacing	Can Diameter	Height	Impedance	Product Status	AEC-Q200
EEU-FC1H331	Panasonic	330 µF	50 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.787" (20.00 mm)	63 mOhms	Active	Yes
EEU-FC1J331	Panasonic	330 µF	63 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.787" (20.00 mm)	85 mOhms	Active	Yes
EEU-FC1H331B	Panasonic	330 µF	50 V	±20%	0.197" (5.00 mm)	0.492" (12.50 mm)	0.866" (22.00 mm)	63 mOhms	Active	Yes
ELXZ500ELL331MJ25S	Chemi-Con	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	1.043" (26.50 mm)	73 mOhms	Active	Yes
UPJ1H331MHD6	Nichicon	330 µF	50 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	0.650" (16.50 mm)	78 mOhms	Not For New Designs	No
UPJ1H331MPD	Nichicon	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	1.299" (33.00 mm)	72 mOhms	Not For New Designs	No
UPM1H331MHD6	Nichicon	330 µF	50 V	±20%	0.295" (7.50 mm)	0.630" (16.00 mm)	0.669" (17.00 mm)	60 mOhms	Not For New Designs	Yes
UPW1H331MPD	Nichicon	330 µF	50 V	±20%	0.197" (5.00 mm)	0.394" (10.00 mm)	0.787" (20.00 mm)	90 mOhms	Not For New Designs	No

Engineering Selection Recommendations

For Active Production Designs:

EEU-FC1J331 (Panasonic) is the primary upgrade substitute. It maintains identical mechanical dimensions and lead spacing to the EEU-FC1H331 while providing 63 V rating instead of 50 V. Both parts carry AEC-Q200 certification and active product status. The higher voltage rating provides additional design margin without requiring PCB modifications.

EEU-FC1H331B (Panasonic) is a direct electrical equivalent with identical electrical specifications and AEC-Q200 rating. The only difference is packaging format (Cut Tape versus Bulk) and a 2 mm height increase (0.866" versus 0.787"). This part is suitable when PCB clearance accommodates the additional height.

ELXZ500ELL331MJ25S (Chemi-Con) matches all electrical parameters and maintains the 5.00 mm lead spacing. The can diameter is smaller (0.394" versus 0.492") and height is greater (1.043" versus 0.787"), requiring PCB layout verification for mechanical fit.

For Legacy or Existing Designs:

UPM1H331MHD6 (Nichicon) carries AEC-Q200 certification despite "Not For New Designs" status, making it suitable for existing automotive applications. The 7.50 mm lead spacing and larger can diameter (0.630") require PCB layout compatibility verification.

UPJ1H331MHD6 and UPJ1H331MPD (Nichicon) are marked "Not For New Designs" and lack AEC-Q200 certification. These parts are suitable only for legacy design support or non-automotive applications where certification is not required. Mechanical dimensions differ significantly from the primary part.

UPW1H331MPD (Nichicon) is marked "Not For New Designs" and lacks AEC-Q200 certification. The 90 mOhms impedance is higher than the primary part, affecting ripple current performance.

Frequently Asked Questions (FAQ)

Q: Can EEU-FC1J331 replace EEU-FC1H331 directly on the PCB?

A: Yes. EEU-FC1J331 maintains identical lead spacing (5.00 mm), can diameter (12.50 mm), and height (20.00 mm) as EEU-FC1H331. The 63 V rating is compatible with 50 V circuit requirements. Both parts are AEC-Q200 certified and in active production.

Q: What is the difference between EEU-FC1H331 and EEU-FC1H331B?

A: Both parts have identical electrical specifications (330 µF, 50 V, ±20%, 5000 Hrs @ 105°C) and mechanical dimensions except height. EEU-FC1H331B is 0.866" tall versus 0.787" for EEU-FC1H331. The packaging differs: EEU-FC1H331 is Bulk; EEU-FC1H331B is Cut Tape. Verify PCB clearance before substitution.

Q: Why do Nichicon parts show "Not For New Designs"?

A: This status indicates the manufacturer is discontinuing these product lines. While existing inventory is available, these parts should not be selected for new designs. For new designs, use active-status parts: EEU-FC1H331, EEU-FC1J331, or EEU-FC1H331B from Panasonic, or ELXZ500ELL331MJ25S from Chemi-Con.

Q: Can I use ELXZ500ELL331MJ25S as a direct replacement?

A: Electrical substitution is valid (330 µF, 50 V, ±20%, 5000 Hrs @ 105°C). However, mechanical dimensions differ: can diameter is 0.394" (versus 0.492") and height is 1.043" (versus 0.787"). PCB layout must accommodate these differences. Lead spacing matches at 5.00 mm.

Q: Which substitute has the lowest impedance?

A: UPM1H331MHD6 has 60 mOhms impedance, the lowest among all listed parts. However, this part is marked "Not For New Designs." For active designs, EEU-FC1H331 at 63 mOhms is the lowest impedance option.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed parts carry ROHS3 Compliant status. All parts are also REACH Unaffected or REACH Affected, meeting environmental compliance requirements.

Q: What is the impact of different lead spacing on PCB design?

A: EEU-FC1H331, EEU-FC1J331, EEU-FC1H331B, ELXZ500ELL331MJ25S, and UPW1H331MPD use 5.00 mm lead spacing and are directly compatible with existing PCB footprints. UPJ1H331MHD6 and UPM1H331MHD6 use 7.50 mm lead spacing, requiring different PCB footprints and cannot be used as drop-in replacements without layout modification.

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