LGN2E331MELY35 Equivalent & Substitute Parts

Part Overview

The LGN2E331MELY35 is a 330 µF, 250 V aluminum electrolytic capacitor manufactured by Nichicon in the LGN series. This radial, can-style snap-in capacitor is rated for 3000 hours at 105°C and operates across the temperature range of -40°C to 105°C. The part is Active status and ROHS3 compliant, making it suitable for general-purpose applications requiring stable capacitance and ripple current handling in through-hole configurations.

Equivalent and substitute parts are identified when alternative components meet the same electrical specifications and mechanical compatibility requirements, allowing for design flexibility, supply chain optimization, or inventory management.

Key Parameters

Parameter	Value
Capacitance	330 µF
Tolerance	±20%
Voltage - Rated	250 V
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Ripple Current @ 120 Hz	1.2 A
Ripple Current @ 50 kHz	1.8 A
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LGN2E331MELY35 is determined by strict adherence to the following criteria:

Mandatory Electrical Parameters:

Capacitance: 330 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 250 V (exact match required)
Operating Temperature Range: -40°C ~ 105°C (exact match required)
Polarization: Polar (exact match required)

Mandatory Mechanical Parameters:

Lead Spacing: 0.394" (10.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial, Can - Snap-In (exact match required)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (exact match required)

Substitute parts are grouped into two categories:

Category A - Nichicon LGN and LGU Series (Same Manufacturer, Identical Electrical Specifications): Parts LGN2E331MELA25, LGN2E331MELZ30, LGU2E331MELY, LGU2E331MELB, and LGU2E331MELZ meet all mandatory electrical and mechanical parameters. Variations in physical dimensions (diameter and height) do not affect electrical substitution when lead spacing and mounting type remain constant.

Category B - Nichicon LGW Series (Enhanced Ripple Current Capability): Parts LGW2E331MELA25 and LGW2E331MELZ30 meet all mandatory parameters with higher ripple current ratings (1.8 A @ 120 Hz and 2.7 A @ 50 kHz), providing additional performance margin in applications with elevated ripple current demands.

Category C - Alternative Manufacturers (Cross-Manufacturer Equivalents): Parts 381LQ331M250H022 (Cornell Dubilier Electronics) and B43504C2337M000 (EPCOS - TDK Electronics) meet all mandatory electrical and mechanical parameters. The 381LQ series maintains 3000-hour lifetime rating; the B43504 series is marked "Not For New Designs" and carries a 2000-hour lifetime rating at 105°C.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Ripple Current @ 120 Hz	Ripple Current @ 50 kHz	Lead Spacing	Diameter	Height (Max)	Product Status	RoHS Status
LGN2E331MELY35	Nichicon	LGN	330 µF	250 V	±20%	3000 Hrs	1.2 A	1.8 A	0.394" (10.00 mm)	0.787" (20.00 mm)	1.457" (37.00 mm)	Active	ROHS3
LGN2E331MELA25	Nichicon	LGN	330 µF	250 V	±20%	3000 Hrs	1.2 A	1.8 A	0.394" (10.00 mm)	0.984" (25.00 mm)	1.063" (27.00 mm)	Active	ROHS3
LGN2E331MELZ30	Nichicon	LGN	330 µF	250 V	±20%	3000 Hrs	1.2 A	1.8 A	0.394" (10.00 mm)	0.866" (22.00 mm)	1.260" (32.00 mm)	Active	ROHS3
LGU2E331MELY	Nichicon	LGU	330 µF	250 V	±20%	3000 Hrs	1.2 A	1.8 A	0.394" (10.00 mm)	0.787" (20.00 mm)	1.575" (40.00 mm)	Active	ROHS3
LGU2E331MELB	Nichicon	LGU	330 µF	250 V	±20%	3000 Hrs	1.3 A	1.95 A	0.394" (10.00 mm)	1.181" (30.00 mm)	0.984" (25.00 mm)	Active	ROHS3
LGU2E331MELZ	Nichicon	LGU	330 µF	250 V	±20%	3000 Hrs	1.3 A	1.95 A	0.394" (10.00 mm)	0.866" (22.00 mm)	1.575" (40.00 mm)	Active	ROHS3
LGU2E331MELA	Nichicon	LGU	330 µF	250 V	±20%	3000 Hrs	1.3 A	1.95 A	0.394" (10.00 mm)	0.984" (25.00 mm)	1.181" (30.00 mm)	Active	ROHS3
LGW2E331MELA25	Nichicon	LGW	330 µF	250 V	±20%	3000 Hrs	1.8 A	2.7 A	0.394" (10.00 mm)	0.984" (25.00 mm)	0.984" (25.00 mm)	Active	ROHS3
LGW2E331MELZ30	Nichicon	LGW	330 µF	250 V	±20%	3000 Hrs	1.8 A	2.7 A	0.394" (10.00 mm)	0.866" (22.00 mm)	1.181" (30.00 mm)	Active	ROHS3
381LQ331M250H022	Cornell Dubilier Electronics	381LQ	330 µF	250 V	±20%	2000 Hrs	1.2 A	1.68 A	0.394" (10.00 mm)	0.866" (22.00 mm)	1.260" (32.00 mm)	Active	ROHS3
B43504C2337M000	EPCOS - TDK Electronics	B43504	330 µF	250 V	±20%	2000 Hrs	1.2 A	N/A	0.394" (10.00 mm)	0.984" (25.00 mm)	1.260" (32.00 mm)	Not For New Designs	ROHS3

Engineering Selection Recommendations

Nichicon LGN Series (LGN2E331MELA25, LGN2E331MELZ30): These parts are direct electrical equivalents with identical ripple current specifications. All are Active status and ROHS3 compliant. Selection between these variants depends on physical space constraints, as diameter and height vary. LGN2E331MELA25 offers a more compact height (27 mm) with larger diameter (25 mm); LGN2E331MELZ30 provides a mid-range profile (22 mm diameter, 32 mm height).

Nichicon LGU Series (LGU2E331MELY, LGU2E331MELB, LGU2E331MELZ, LGU2E331MELA): These parts meet all electrical requirements with slightly elevated ripple current ratings (1.3 A @ 120 Hz, 1.95 A @ 50 kHz). All are Active status and ROHS3 compliant. The LGU series provides enhanced performance margin in applications with higher ripple current demands while maintaining the same voltage and capacitance ratings.

Nichicon LGW Series (LGW2E331MELA25, LGW2E331MELZ30): These parts offer the highest ripple current capability (1.8 A @ 120 Hz, 2.7 A @ 50 kHz) among Nichicon substitutes. All are Active status and ROHS3 compliant. The LGW series is suitable for applications requiring maximum ripple current handling within the 330 µF, 250 V specification.

Cornell Dubilier Electronics 381LQ331M250H022: This part meets all electrical and mechanical parameters with Active product status and ROHS3 compliance. The lifetime rating is 2000 hours at 105°C, compared to 3000 hours for Nichicon parts. This part is suitable for applications where the reduced lifetime is acceptable or where supply chain diversification is required.

EPCOS - TDK Electronics B43504C2337M000: This part carries "Not For New Designs" status and is marked for legacy applications only. The 2000-hour lifetime at 105°C is lower than the primary part. This option is not recommended for new designs but may be considered for replacement in existing equipment where compatibility is established.

Frequently Asked Questions (FAQ)

Q: Can I substitute LGN2E331MELY35 with LGU2E331MELY?

A: Yes. Both parts share identical electrical specifications (330 µF, 250 V, ±20%, 3000 Hrs @ 105°C) and mechanical compatibility (10 mm lead spacing, through-hole radial snap-in package). The LGU2E331MELY has a taller profile (40 mm height vs. 37 mm) but maintains the same 20 mm diameter. Verify available PCB space before substitution.

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

A: All three series meet the same electrical specifications for the 330 µF, 250 V rating. The primary difference is ripple current capability: LGN series handles 1.2 A @ 120 Hz and 1.8 A @ 50 kHz; LGU series handles 1.3 A @ 120 Hz and 1.95 A @ 50 kHz; LGW series handles 1.8 A @ 120 Hz and 2.7 A @ 50 kHz. Select based on application ripple current requirements.

Q: Can I use the Cornell Dubilier 381LQ331M250H022 as a direct replacement?

A: Yes, for electrical and mechanical compatibility. The 381LQ part meets all mandatory parameters with Active status and ROHS3 compliance. However, the lifetime rating is 2000 hours at 105°C versus 3000 hours for the LGN2E331MELY35. Confirm that the reduced lifetime is acceptable for your application's expected service duration.

Q: Why is the EPCOS B43504C2337M000 marked "Not For New Designs"?

A: The B43504 series carries legacy status, indicating that EPCOS - TDK Electronics is not recommending this part for new product development. While it meets the electrical and mechanical specifications, the 2000-hour lifetime at 105°C is lower than current alternatives. This part is suitable only for replacement in existing equipment where historical compatibility is established.

Q: Do all substitute parts have the same physical dimensions?

A: No. While all parts maintain the same 10 mm lead spacing and through-hole radial snap-in package, diameter and height vary across the product range. LGN2E331MELY35 is 20 mm diameter × 37 mm height. Substitutes range from 20 mm to 30 mm diameter and 25 mm to 40 mm height. Verify PCB layout and available mounting space before selecting a substitute with different dimensions.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status, matching the primary part LGN2E331MELY35. This ensures compatibility with regulatory requirements across all identified equivalents.

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