Nichicon LGU2E331MELY Equivalent & Substitute Parts

Part Overview

The Nichicon LGU2E331MELY is a 330 µF, 250 V aluminum electrolytic capacitor with radial, snap-in package configuration. This component is classified as Active product status and is designed for general-purpose applications requiring stable capacitance performance across industrial temperature ranges. Substitute parts are identified based on matching electrical specifications (capacitance, voltage rating, tolerance) and mechanical compatibility (lead spacing, mounting type, package style) while accounting for variations in physical dimensions and ripple current ratings that may affect circuit board layout and thermal management.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	250 V
Tolerance	±20%
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can - Snap-In
Operating Temperature	-40°C ~ 105°C
Lifetime @ Temperature	3000 Hrs @ 105°C
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence in the following core parameters: capacitance value (330 µF), voltage rating (250 V), tolerance (±20%), lead spacing (10.00 mm), mounting type (Through Hole), and package configuration (Radial, Can - Snap-In). All identified substitutes maintain these electrical and mechanical specifications. Variations in physical dimensions (diameter and height), ripple current ratings, and ESR values do not disqualify parts from substitution provided the core parameters remain constant. Lifetime ratings of 3000 Hrs @ 105°C are maintained across Nichicon series variants (LGU, LGN, LGW). Cross-manufacturer substitutes from Cornell Dubilier Electronics and EPCOS maintain the same electrical specifications but may differ in ESR characteristics and lifetime ratings, which must be evaluated against application requirements.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Diameter	Height (Max)	Ripple Current @ 120 Hz	Ripple Current @ 50 kHz	Lifetime @ 105°C	Product Status
LGU2E331MELY	Nichicon	LGU	330 µF	250 V	±20%	0.787" (20.00 mm)	1.575" (40.00 mm)	1.2 A	1.8 A	3000 Hrs	Active
LGN2E331MELY35	Nichicon	LGN	330 µF	250 V	±20%	0.787" (20.00 mm)	1.457" (37.00 mm)	1.2 A	1.8 A	3000 Hrs	Active
LGN2E331MELA25	Nichicon	LGN	330 µF	250 V	±20%	0.984" (25.00 mm)	1.063" (27.00 mm)	1.2 A	1.8 A	3000 Hrs	Active
LGN2E331MELZ30	Nichicon	LGN	330 µF	250 V	±20%	0.866" (22.00 mm)	1.260" (32.00 mm)	1.2 A	1.8 A	3000 Hrs	Active
LGU2E331MELA	Nichicon	LGU	330 µF	250 V	±20%	0.984" (25.00 mm)	1.181" (30.00 mm)	1.3 A	1.95 A	3000 Hrs	Active
LGU2E331MELB	Nichicon	LGU	330 µF	250 V	±20%	1.181" (30.00 mm)	0.984" (25.00 mm)	1.3 A	1.95 A	3000 Hrs	Active
LGU2E331MELZ	Nichicon	LGU	330 µF	250 V	±20%	0.866" (22.00 mm)	1.575" (40.00 mm)	1.3 A	1.95 A	3000 Hrs	Active
LGW2E331MELA25	Nichicon	LGW	330 µF	250 V	±20%	0.984" (25.00 mm)	0.984" (25.00 mm)	1.8 A	2.7 A	3000 Hrs	Active
LGW2E331MELZ30	Nichicon	LGW	330 µF	250 V	±20%	0.866" (22.00 mm)	1.181" (30.00 mm)	1.8 A	2.7 A	3000 Hrs	Active
381LQ331M250H022	Cornell Dubilier Electronics	381LQ	330 µF	250 V	±20%	0.866" (22.00 mm)	1.260" (32.00 mm)	1.2 A	1.68 A	2000 Hrs	Active
B43504C2337M000	EPCOS - TDK Electronics	B43504	330 µF	250 V	±20%	0.984" (25.00 mm)	1.260" (32.00 mm)	1.2 A	N/A	3000 Hrs	Not For New Designs

Engineering Selection Recommendations

All Nichicon LGU, LGN, and LGW series parts listed maintain Active product status and ROHS3 compliance, making them suitable for new designs. Selection among Nichicon variants should prioritize dimensional fit within the circuit board layout, as physical dimensions vary across the series while electrical specifications remain constant. The LGW series offers elevated ripple current ratings (1.8 A @ 120 Hz, 2.7 A @ 50 kHz) compared to LGU and LGN variants, providing enhanced thermal performance in high-ripple-current applications.

Cornell Dubilier Electronics 381LQ331M250H022 maintains electrical equivalence but specifies 2000 Hrs lifetime at 105°C versus 3000 Hrs for Nichicon parts. This reduced lifetime rating must be evaluated against application duty cycle requirements.

EPCOS B43504C2337M000 carries "Not For New Designs" status and should be avoided for new product development. This part is listed for reference only in legacy system maintenance scenarios.

Frequently Asked Questions (FAQ)

Q: Can I substitute LGU2E331MELY with any of the listed Nichicon alternatives?

A: Yes, all Nichicon LGU, LGN, and LGW series parts are electrically equivalent (330 µF, 250 V, ±20%, 10.00 mm lead spacing, snap-in package). Substitution is valid provided the physical dimensions (diameter and height) fit within the available circuit board space. Verify mounting hole alignment and clearance before implementation.

Q: What is the difference between LGU, LGN, and LGW series?

A: These series differ in physical dimensions and ripple current ratings while maintaining identical electrical specifications. LGW series provides higher ripple current capacity (1.8 A @ 120 Hz, 2.7 A @ 50 kHz) compared to LGU and LGN (1.2–1.3 A @ 120 Hz, 1.8–1.95 A @ 50 kHz). Select based on thermal requirements and available board space.

Q: Is the Cornell Dubilier 381LQ331M250H022 a direct replacement?

A: The 381LQ331M250H022 is electrically equivalent but specifies 2000 Hrs lifetime at 105°C versus 3000 Hrs for Nichicon parts. Use only if application duty cycle permits reduced lifetime rating. Lead spacing and package configuration are compatible.

Q: Should I use the EPCOS B43504C2337M000?

A: No. This part carries "Not For New Designs" status and should not be selected for new product development. It is listed for reference in legacy system maintenance only.

Q: How do I determine which substitute fits my circuit board?

A: Compare the diameter and height (seated maximum) specifications against available space. All parts maintain 10.00 mm lead spacing and snap-in mounting compatibility. Verify clearance to adjacent components before final selection.

Q: Are all listed parts RoHS3 compliant?

A: Yes, all Nichicon and Cornell Dubilier parts listed are ROHS3 compliant. The EPCOS B43504C2337M000 is also ROHS3 compliant but carries obsolescence status.

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