LGG2W331MELB35 Equivalent & Substitute Parts

Part Overview

The LGG2W331MELB35 is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Nichicon in the LGG series. This radial, can-style snap-in component is rated for 2000 hours at 105°C and is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part is Active status and ROHS3 compliant.

Equivalent and substitute parts are necessary when the primary part is unavailable, when design requirements demand extended operational lifetime, when ripple current specifications require higher ratings, or when alternative manufacturers' components meet identical electrical and mechanical parameters within acceptable tolerances.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	450 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-25°C ~ 105°C
Polarization	Polar
Lead Spacing	0.394" (10.00 mm)
Diameter	1.181" (30.00 mm)
Height (Seated Max)	1.457" (37.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LGG2W331MELB35 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Capacitance: 330 µF
Voltage Rating: 450 V
Tolerance: ±20%
Polarization: Polar
Mounting Type: Through Hole
Package / Case: Radial, Can - Snap-In
Lead Spacing: 0.394" (10.00 mm)

Allowable Variations:

Lifetime @ 105°C: May exceed 2000 hours (extended lifetime acceptable)
Diameter: May vary within mechanical envelope constraints
Height (Seated Max): May vary within mechanical envelope constraints
Ripple Current: May exceed specified values (higher current capability acceptable)
Manufacturer: Different manufacturers acceptable if all critical parameters match

Substitute parts are grouped into the following categories:

Similar Manufacturer Parts (Nichicon): Parts from the same manufacturer with identical electrical specifications but different series designations or dimensional variations.

Parametric Equivalent Parts (Nichicon): Parts meeting all critical electrical parameters with identical physical footprint.

Direct Equivalent Parts (Alternative Manufacturers): Parts from different manufacturers (Rubycon, Cornell Dubilier Electronics) meeting all critical electrical and mechanical parameters.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Diameter	Height (Max)	Lead Spacing	Ripple Current @ 120 Hz	Ripple Current @ 50 kHz	RoHS Status
LGG2W331MELB35	Nichicon	LGG	330 µF	450 V	±20%	2000 Hrs	1.181" (30.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	1.2 A	1.716 A	ROHS3
LGG2W331MELC30	Nichicon	LGG	330 µF	450 V	±20%	2000 Hrs	1.378" (35.00 mm)	1.260" (32.00 mm)	0.394" (10.00 mm)	1.2 A	1.716 A	ROHS3
LGN2W331MELB40	Nichicon	LGN	330 µF	450 V	±20%	3000 Hrs	1.181" (30.00 mm)	1.654" (42.00 mm)	0.394" (10.00 mm)	1.38 A	1.9734 A	ROHS3
LGU2W331MELC	Nichicon	LGU	330 µF	450 V	±20%	3000 Hrs	1.378" (35.00 mm)	1.575" (40.00 mm)	0.394" (10.00 mm)	1.45 A	2.0735 A	ROHS3
LGW2W331MELC35	Nichicon	LGW	330 µF	450 V	±20%	3000 Hrs	1.378" (35.00 mm)	1.378" (35.00 mm)	0.394" (10.00 mm)	2.2 A	3.146 A	ROHS3
LGL2W331MELB35	Nichicon	LGL	330 µF	450 V	±20%	2000 Hrs	1.181" (30.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	1.12 A	1.6016 A	ROHS3
450MXK330MEFCFA30X30	Rubycon	MXK	330 µF	450 V	±20%	3000 Hrs	1.181" (30.00 mm)	1.260" (32.00 mm)	0.394" (10.00 mm)	1.58 A	2.212 A @ 10 kHz	ROHS3
381LQ331M450A032	Cornell Dubilier Electronics	381LQ	330 µF	450 V	±20%	2000 Hrs	1.378" (35.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	1.38 A	1.93 A @ 20 kHz	ROHS3
381LR331M450A042	Cornell Dubilier Electronics	381LR	330 µF	450 V	±20%	3000 Hrs	1.378" (35.00 mm)	1.654" (42.00 mm)	0.394" (10.00 mm)	1.85 A	2.64 A @ 20 kHz	ROHS3
381LR331M450K052	Cornell Dubilier Electronics	381LR	330 µF	450 V	±20%	3000 Hrs	1.181" (30.00 mm)	2.047" (52.00 mm)	0.394" (10.00 mm)	1.85 A	2.64 A @ 20 kHz	ROHS3
381LX331M450A042	Cornell Dubilier Electronics	381LX	330 µF	450 V	±20%	3000 Hrs	1.378" (35.00 mm)	1.654" (42.00 mm)	0.394" (10.00 mm)	1.4 A	1.9 A @ 20 kHz	ROHS3

Engineering Selection Recommendations

All listed substitute parts are Active status and ROHS3 compliant, meeting regulatory requirements equivalent to the LGG2W331MELB35.

For Direct Mechanical and Electrical Replacement: LGL2W331MELB35 (Nichicon LGL series) provides identical footprint and electrical specifications with 2000-hour lifetime rating.

For Extended Operational Lifetime: LGN2W331MELB40, LGU2W331MELC, LGW2W331MELC35, 450MXK330MEFCFA30X30, 381LR331M450A042, 381LR331M450K052, and 381LX331M450A042 all provide 3000-hour lifetime ratings at 105°C, extending component service life by 50%.

For Increased Ripple Current Capability: LGW2W331MELC35 (2.2 A @ 120 Hz, 3.146 A @ 50 kHz) and 381LR series parts (1.85 A @ 120 Hz, 2.64 A @ 20 kHz) support higher ripple current applications.

For Compact Height Profile: LGG2W331MELC30 (1.260" seated height) and 450MXK330MEFCFA30X30 (1.260" seated height) reduce vertical space requirements while maintaining all critical electrical parameters.

For Alternative Manufacturer Sourcing: 450MXK330MEFCFA30X30 (Rubycon) and 381LQ331M450A032, 381LR331M450A042, 381LR331M450K052, 381LX331M450A042 (Cornell Dubilier Electronics) provide cross-manufacturer alternatives with identical electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can LGG2W331MELC30 replace LGG2W331MELB35 in my circuit? A: Yes. Both parts share identical capacitance (330 µF), voltage rating (450 V), tolerance (±20%), lifetime (2000 Hrs @ 105°C), lead spacing (0.394"), and mounting type (Through Hole, Radial Can - Snap-In). The primary difference is diameter (1.378" vs. 1.181") and height (1.260" vs. 1.457"), which may affect PCB layout. Verify available board space before substitution.

Q: What is the advantage of using LGN2W331MELB40 instead of the original LGG2W331MELB35? A: LGN2W331MELB40 extends operational lifetime from 2000 hours to 3000 hours at 105°C, providing 50% longer service life. Ripple current ratings also increase (1.38 A @ 120 Hz vs. 1.2 A). Height increases from 1.457" to 1.654". All other electrical parameters remain identical.

Q: Are Cornell Dubilier Electronics parts (381LQ, 381LR, 381LX series) fully compatible with Nichicon LGG2W331MELB35? A: Yes, for electrical and functional purposes. All Cornell Dubilier parts listed meet the critical parameters: 330 µF capacitance, 450 V voltage rating, ±20% tolerance, polar configuration, 0.394" lead spacing, and through-hole radial snap-in mounting. Mechanical dimensions vary; verify PCB layout compatibility. All are ROHS3 compliant.

Q: Can I use 450MXK330MEFCFA30X30 (Rubycon) as a direct replacement? A: Yes. The Rubycon MXK part matches all critical electrical specifications and maintains the same 1.181" diameter and 0.394" lead spacing as the original. Height is reduced to 1.260" (vs. 1.457"), and lifetime extends to 3000 hours. This part is suitable for space-constrained applications requiring extended operational life.

Q: What does "Lead Spacing 0.394" (10.00 mm)" mean for substitution? A: Lead spacing defines the distance between the two through-hole pins on the PCB. All substitute parts listed maintain 0.394" (10.00 mm) spacing, ensuring compatibility with existing PCB footprints without modification.

Q: Why do some parts list different ripple current frequencies (50 kHz vs. 20 kHz vs. 10 kHz)? A: Ripple current ratings are frequency-dependent. Manufacturers specify ratings at standard test frequencies. When selecting substitutes, compare ripple current values at the frequency closest to your application's operating frequency. Higher ripple current ratings at any frequency indicate greater current-handling capability.

Q: Are all substitute parts ROHS3 compliant like the original? A: Yes. All parts listed in this reference are ROHS3 compliant, meeting the same environmental and regulatory standards as LGG2W331MELB35.

Q: What is the difference between "Similar," "Parametric Equivalent," and "Direct" substitute classifications? A: Similar parts share the same manufacturer and core specifications but may differ in series designation or dimensional characteristics. Parametric Equivalent parts meet all critical electrical parameters with identical physical footprint from the same manufacturer. Direct Equivalent parts are from alternative manufacturers and meet all critical electrical and mechanical parameters.

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