LGUW6331MELC Equivalent & Substitute Parts

Part Overview

The LGUW6331MELC is a 330 µF, 420 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as Active product status and is designed for general purpose applications requiring stable capacitance performance across extended operating temperature ranges. Substitute parts are identified to address inventory availability, performance upgrades, or specific application requirements while maintaining electrical and mechanical compatibility within defined parameters.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage - Rated	420 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)
Package / Case	Radial, Can - Snap-In
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for LGUW6331MELC are classified based on the following substitution criteria:

Upgrade Category: Parts with identical capacitance (330 µF) and tolerance (±20%), matching lead spacing (10.00 mm) and package type (Radial, Can - Snap-In), but with increased voltage rating (450 V vs. 420 V). These parts provide enhanced voltage margin and are direct upgrades suitable for applications where higher voltage headroom is beneficial.

Similar Category: Parts with identical capacitance (330 µF) and tolerance (±20%), matching lead spacing (10.00 mm) and package type (Radial, Can - Snap-In), but with variations in physical dimensions (height or diameter) or voltage rating. These parts maintain core electrical specifications while differing in form factor or performance characteristics.

The following parameters determine substitution eligibility:

Capacitance value (must match: 330 µF)
Tolerance (must match: ±20%)
Lead spacing (must match: 10.00 mm)
Package type (must match: Radial, Can - Snap-In)
Mounting type (must match: Through Hole)
Voltage rating (must be equal to or greater than 420 V)
Operating temperature range (must encompass or match: -25°C ~ 105°C)

Parameter Comparison

Parameter	LGUW6331MELC (Main)	LGW2W331MELC35 (Upgrade)	LGU2W331MELC (Similar)	LGUW6331MELB (Similar)
Manufacturer	Nichicon	Nichicon	Nichicon	Nichicon
Capacitance	330 µF	330 µF	330 µF	330 µF
Tolerance	±20%	±20%	±20%	±20%
Voltage - Rated	420 V	450 V	450 V	420 V
Lifetime @ Temperature	3000 Hrs @ 105°C	3000 Hrs @ 105°C	3000 Hrs @ 105°C	3000 Hrs @ 105°C
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Size / Dimension	1.378" Dia (35.00 mm)	1.378" Dia (35.00 mm)	1.378" Dia (35.00 mm)	1.181" Dia (30.00 mm)
Height - Seated (Max)	1.378" (35.00 mm)	1.378" (35.00 mm)	1.575" (40.00 mm)	1.772" (45.00 mm)
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original LGUW6331MELC component.

LGW2W331MELC35 (Upgrade): This part is electrically and mechanically compatible with identical physical dimensions (1.378" diameter, 1.378" height) and lead spacing. The 450 V voltage rating provides a 30 V increase over the main part, suitable for applications requiring enhanced voltage margin while maintaining identical capacitance and tolerance specifications.

LGU2W331MELC (Similar): This part matches all core electrical parameters and lead spacing but features increased height (1.575" vs. 1.378") and elevated voltage rating (450 V). Physical dimension variation requires verification of available board space before selection.

LGUW6331MELB (Similar): This part maintains identical electrical specifications and voltage rating as the main component but differs in physical dimensions (1.181" diameter, 1.772" height). Dimensional variation requires PCB layout compatibility assessment prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can LGW2W331MELC35 be used as a direct replacement for LGUW6331MELC?

A: Yes. LGW2W331MELC35 is electrically and mechanically compatible. Both parts share identical capacitance (330 µF), tolerance (±20%), lead spacing (10.00 mm), physical diameter (1.378"), and height (1.378"). The 450 V rating of LGW2W331MELC35 exceeds the 420 V requirement, providing additional voltage headroom without affecting circuit performance.

Q: What is the primary difference between LGU2W331MELC and LGUW6331MELC?

A: Both parts share identical capacitance (330 µF), tolerance (±20%), and lead spacing (10.00 mm). LGU2W331MELC features a higher voltage rating (450 V vs. 420 V) and increased seated height (1.575" vs. 1.378"). The diameter remains constant at 1.378". Height variation must be verified against available PCB clearance.

Q: Is LGUW6331MELB suitable for space-constrained applications?

A: LGUW6331MELB has a smaller diameter (1.181" vs. 1.378") but greater height (1.772" vs. 1.378"). This part is suitable only if vertical clearance is available and horizontal space is limited. Lead spacing (10.00 mm) and electrical specifications remain identical to the main part.

Q: Do all substitute parts maintain the same operating temperature range?

A: Yes. All substitute parts operate across the identical temperature range of -25°C to 105°C with 3000 hours lifetime at 105°C, matching the original LGUW6331MELC specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. LGUW6331MELC, LGW2W331MELC35, LGU2W331MELC, and LGUW6331MELB are all ROHS3 compliant, ensuring regulatory compliance across all substitution options.

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