LGG2G331MELC25 Equivalent & Substitute Parts

Part Overview

The LGG2G331MELC25 is a 330 µF, 400 V aluminum electrolytic capacitor manufactured by Nichicon in the LGG series. This radial, can-style snap-in capacitor 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 and in production, with ROHS3 compliance and REACH unaffected status. Equivalent and substitute parts are identified based on matching electrical specifications (capacitance, voltage rating, tolerance, and ripple current performance) and mechanical compatibility (lead spacing, mounting type, and package style).

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	400 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Ripple Current @ 120 Hz	1.15 A
Ripple Current @ 50 kHz	1.6445 A
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Package Style	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LGG2G331MELC25 is determined by strict adherence to the following electrical and mechanical parameters:

Electrical Compatibility Requirements:

Capacitance: 330 µF (exact match required)
Voltage Rating: 400 V (exact match required)
Tolerance: ±20% (exact match required)
Operating Temperature Range: -25°C ~ 105°C (exact match required)
Polarization: Polar (exact match required)

Mechanical Compatibility Requirements:

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

Performance Considerations:

Lifetime @ 105°C: Substitute parts may have equal or extended lifetime ratings (2000 Hrs or greater)
Ripple Current: Substitute parts must meet or exceed the ripple current specifications at both 120 Hz and 50 kHz

Compliance Requirements:

RoHS Status: ROHS3 Compliant (maintained across all substitutes)
REACH Status: REACH Unaffected (maintained across all substitutes)

Substitute parts are grouped into two categories: Nichicon LGG series variants with identical 2000-hour lifetime ratings, and higher-performance Nichicon series (LGN, LGU, LGW) with extended 3000-hour lifetime ratings that provide enhanced reliability while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Lifetime @ 105°C	Ripple Current @ 120 Hz	Ripple Current @ 50 kHz	Lead Spacing	Size / Diameter	Height (Max)	Packaging	RoHS Status
LGG2G331MELC25	Nichicon	LGG	330 µF	400 V	±20%	2000 Hrs	1.15 A	1.6445 A	0.394" (10.00 mm)	1.378" (35.00 mm)	0.984" (25.00 mm)	Bulk	ROHS3
LGG2G331MELA40	Nichicon	LGG	330 µF	400 V	±20%	2000 Hrs	1.15 A	1.6445 A	0.394" (10.00 mm)	0.984" (25.00 mm)	1.654" (42.00 mm)	Bulk	ROHS3
LGG2G331MELZ50	Nichicon	LGG	330 µF	400 V	±20%	2000 Hrs	1.15 A	1.6445 A	0.394" (10.00 mm)	0.866" (22.00 mm)	2.047" (52.00 mm)	Bulk	ROHS3
LGN2G331MELA45	Nichicon	LGN	330 µF	400 V	±20%	3000 Hrs	1.44 A	2.0592 A	0.394" (10.00 mm)	0.984" (25.00 mm)	1.850" (47.00 mm)	Bulk	ROHS3
LGN2G331MELB35	Nichicon	LGN	330 µF	400 V	±20%	3000 Hrs	1.44 A	2.0592 A	0.394" (10.00 mm)	1.181" (30.00 mm)	1.457" (37.00 mm)	Bulk	ROHS3
LGU2G331MELA	Nichicon	LGU	330 µF	400 V	±20%	3000 Hrs	1.44 A	2.0592 A	0.394" (10.00 mm)	0.984" (25.00 mm)	1.969" (50.00 mm)	Bulk	ROHS3
LGU2G331MELB	Nichicon	LGU	330 µF	400 V	±20%	3000 Hrs	1.44 A	2.0592 A	0.394" (10.00 mm)	1.181" (30.00 mm)	1.575" (40.00 mm)	Tray	ROHS3
LGU2G331MELC	Nichicon	LGU	330 µF	400 V	±20%	3000 Hrs	1.44 A	2.0592 A	0.394" (10.00 mm)	1.378" (35.00 mm)	1.181" (30.00 mm)	Bulk	ROHS3
LGW2G331MELA50	Nichicon	LGW	330 µF	400 V	±20%	3000 Hrs	2.12 A	3.0316 A	0.394" (10.00 mm)	0.984" (25.00 mm)	1.969" (50.00 mm)	Bulk	ROHS3
LGW2G331MELB40	Nichicon	LGW	330 µF	400 V	±20%	3000 Hrs	2.33 A	3.3319 A	0.394" (10.00 mm)	1.181" (30.00 mm)	1.575" (40.00 mm)	Bulk	ROHS3
381LQ331M400A022	Cornell Dubilier Electronics (CDE)	381LQ	330 µF	400 V	±20%	2000 Hrs	1.44 A	—	0.394" (10.00 mm)	1.378" (35.00 mm)	1.260" (32.00 mm)	Bulk	ROHS3

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical compatibility with the LGG2G331MELC25. Selection among substitutes is based on the following engineering criteria:

For Direct Replacement (Identical Lifetime): LGG2G331MELA40 and LGG2G331MELZ50 are Nichicon LGG series variants with identical 2000-hour lifetime ratings at 105°C. These parts are electrically and mechanically interchangeable with the main part. Selection between these variants depends on available board space and lead-to-lead clearance requirements, as they differ in physical dimensions while maintaining the same 10.00 mm lead spacing.

For Enhanced Reliability (Extended Lifetime): LGN2G331MELA45, LGN2G331MELB35, LGU2G331MELA, LGU2G331MELB, and LGU2G331MELC are Nichicon parts with extended 3000-hour lifetime ratings at 105°C. These parts provide increased operational reliability and are suitable for applications requiring longer service life. Ripple current performance is also improved in these series.

For High Ripple Current Applications: LGW2G331MELA50 and LGW2G331MELB40 are Nichicon LGW series parts with the highest ripple current ratings (2.12–2.33 A @ 120 Hz and 3.0316–3.3319 A @ 50 kHz). These parts are specified for applications with demanding ripple current requirements and extended 3000-hour lifetime ratings.

For Cross-Manufacturer Substitution: 381LQ331M400A022 from Cornell Dubilier Electronics (CDE) is a 2000-hour rated alternative with equivalent electrical specifications. This part is suitable for applications where multi-source qualification is required. Physical dimensions differ slightly from the main part.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compliance across all applications.

Frequently Asked Questions (FAQ)

Q: Can LGG2G331MELA40 be used as a direct replacement for LGG2G331MELC25? A: Yes. Both parts are Nichicon LGG series capacitors with identical electrical specifications (330 µF, 400 V, ±20% tolerance, 2000 Hrs @ 105°C) and mechanical compatibility (10.00 mm lead spacing, through-hole radial snap-in package). The primary difference is physical dimensions. Verify that the board layout accommodates the different height and diameter of LGG2G331MELA40 before substitution.

Q: What is the advantage of using LGU2G331MELC over LGG2G331MELC25? A: LGU2G331MELC provides extended lifetime (3000 Hrs @ 105°C versus 2000 Hrs) and improved ripple current performance (1.44 A @ 120 Hz versus 1.15 A). All other electrical parameters remain identical. This substitution is beneficial for applications requiring enhanced reliability or higher ripple current handling.

Q: Are LGW series parts suitable for the same applications as LGG series? A: LGW series parts (LGW2G331MELA50, LGW2G331MELB40) are electrically and mechanically compatible with LGG series parts. However, LGW parts are specified for applications with significantly higher ripple current demands. Use LGW parts only if your application requires ripple current performance exceeding 1.15 A @ 120 Hz.

Q: Can I substitute the CDE 381LQ331M400A022 for the Nichicon LGG2G331MELC25? A: Yes, the CDE 381LQ331M400A022 is electrically compatible (330 µF, 400 V, ±20% tolerance, 2000 Hrs @ 105°C) and mechanically compatible (10.00 mm lead spacing, through-hole radial snap-in package). Physical dimensions differ slightly. Verify board layout compatibility before substitution.

Q: Does packaging type (Bulk versus Tray) affect electrical performance? A: No. Packaging type (Bulk or Tray) does not affect electrical or mechanical performance. LGU2G331MELB is supplied in Tray packaging while most other substitutes are supplied in Bulk packaging. Selection between packaging types is based on procurement and handling requirements only.

Q: What is the significance of the letter suffix in part numbers (e.g., MELA, MELB, MELC)? A: The letter suffix indicates physical dimensions (diameter and height). All suffixes within the same series (LGG, LGN, LGU, LGW) maintain identical electrical specifications and 10.00 mm lead spacing. Selection of suffix depends on available board space and mechanical clearance requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, maintaining full regulatory compliance with the original LGG2G331MELC25.

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