LGGW6331MELB35 Equivalent & Substitute Parts

Part Overview

The LGGW6331MELB35 is a 330 µF, 420 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This 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.

Substitute parts are necessary when the original component reaches end-of-life, inventory constraints occur, or when design requirements allow for alternative specifications that maintain or improve system performance within the same mechanical and electrical envelope.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	420 V
Tolerance	±20%
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-25°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)
Diameter	1.181" (30.00 mm)
Height	1.457" (37.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LGGW6331MELB35 is determined by the following criteria:

Direct Substitutes (Identical Electrical & Mechanical Specifications): Parts that maintain 330 µF capacitance, 420 V voltage rating, ±20% tolerance, identical physical dimensions (1.181" diameter, 1.457" height, 10.00 mm lead spacing), and through-hole snap-in mounting are classified as direct substitutes. Variations in lifetime rating (2000 Hrs vs. 3000 Hrs @ 105°C) do not disqualify substitution, as extended lifetime provides equal or superior performance.

Upgrade Substitutes (Higher Voltage Rating): Parts with identical capacitance (330 µF), tolerance (±20%), and physical dimensions but rated for 450 V instead of 420 V are classified as upgrades. The higher voltage rating maintains backward compatibility while providing additional design margin.

Similar Substitutes (Dimensional Variations): Parts with identical electrical specifications (330 µF, 420 V, ±20% tolerance) but different physical dimensions (height variations from 1.457" to 1.772" or diameter changes from 1.181" to 1.378") are classified as similar substitutes. These require PCB layout verification to confirm mechanical fit.

Parameter Comparison

Part Number	Series	Capacitance	Voltage	Lifetime @ 105°C	Diameter	Height	Lead Spacing	Ripple Current @ 50 kHz	Status
LGGW6331MELB35	LGG	330 µF	420 V	2000 Hrs	1.181" (30.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	1.633 A	Active
LQSW6331MELB35	LQS	330 µF	420 V	3000 Hrs	1.181" (30.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	2.0306 A	Active
LGG2W331MELB35	LGG	330 µF	450 V	2000 Hrs	1.181" (30.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	1.716 A	Active
LGL2W331MELB35	LGL	330 µF	450 V	2000 Hrs	1.181" (30.00 mm)	1.457" (37.00 mm)	0.394" (10.00 mm)	1.6016 A	Active
LGUW6331MELB	LGU	330 µF	420 V	3000 Hrs	1.181" (30.00 mm)	1.772" (45.00 mm)	0.394" (10.00 mm)	2.0735 A	Active
LGUW6331MELC	LGU	330 µF	420 V	3000 Hrs	1.378" (35.00 mm)	1.378" (35.00 mm)	0.394" (10.00 mm)	2.0735 A	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, confirming ongoing manufacturer support and environmental regulatory alignment with the original LGGW6331MELB35.

For Direct Replacement (No PCB Modification): LQSW6331MELB35 provides identical mechanical fit with extended 3000-hour lifetime at 105°C, representing a performance upgrade within the same footprint.

For Voltage Margin Applications: LGG2W331MELB35 and LGL2W331MELB35 maintain identical physical dimensions while providing 450 V rating, suitable for designs requiring additional voltage headroom within the same PCB layout.

For Space-Constrained or Extended-Lifetime Designs: LGUW6331MELB and LGUW6331MELC offer 3000-hour lifetime ratings but require PCB layout verification due to dimensional variations. LGUW6331MELB increases height to 1.772" (45.00 mm). LGUW6331MELC modifies both diameter to 1.378" (35.00 mm) and height to 1.378" (35.00 mm).

Frequently Asked Questions (FAQ)

Q: Can LQSW6331MELB35 replace LGGW6331MELB35 without any modifications?

A: Yes. LQSW6331MELB35 maintains identical capacitance (330 µF), voltage rating (420 V), tolerance (±20%), and physical dimensions (1.181" diameter, 1.457" height, 10.00 mm lead spacing). The extended 3000-hour lifetime at 105°C provides improved reliability without requiring circuit or PCB changes.

Q: What is the difference between LGG2W331MELB35 and LGGW6331MELB35?

A: LGG2W331MELB35 is rated for 450 V compared to the original 420 V rating. All other specifications—capacitance (330 µF), tolerance (±20%), physical dimensions, and mounting type—remain identical. The higher voltage rating provides additional design margin for applications operating near the original 420 V specification.

Q: Can LGUW6331MELB be used as a drop-in replacement?

A: LGUW6331MELB maintains electrical specifications (330 µF, 420 V, ±20% tolerance) and lead spacing (10.00 mm) but increases height from 1.457" to 1.772" (45.00 mm). PCB layout verification is required to confirm vertical clearance before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the environmental compliance status of the original LGGW6331MELB35.

Q: What determines whether a part can substitute for LGGW6331MELB35?

A: Substitution is determined by maintaining capacitance (330 µF), tolerance (±20%), voltage rating (420 V or higher), lead spacing (10.00 mm), and through-hole snap-in mounting. Physical dimensions (diameter and height) must either match exactly or be verified for PCB fit. All parts must maintain Active product status and equivalent compliance certifications.

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