LGX2W331MELB45 Equivalent & Substitute Parts

Part Overview

The LGX2W331MELB45 is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Nichicon in the LGX series. This radial, can-style snap-in capacitor is rated for 5000 hours at 105°C and is designed for general-purpose applications requiring high voltage energy storage and filtering. The part is currently active in production with full RoHS3 compliance. Equivalent and substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained across alternative manufacturers.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	450 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Polarization	Polar
Lead Spacing	0.394" (10.00 mm)
Diameter	1.181" (30.00 mm)
Mounting Type	Through Hole
Package Type	Radial, Can - Snap-In
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LGX2W331MELB45 are qualified based on the following criteria:

Capacitance value: 330 µF (exact match required)
Voltage rating: 450 V (exact match required)
Tolerance: ±20% (exact match required)
Lifetime specification: 5000 Hrs @ 105°C (exact match required)
Operating temperature range: -25°C ~ 105°C (exact match required)
Polarization: Polar (exact match required)
Lead spacing: 0.394" (10.00 mm) (exact match required)
Diameter: 1.181" (30.00 mm) (exact match required)
Package type: Radial, Can - Snap-In (exact match required)
Mounting type: Through Hole (exact match required)
Regulatory compliance: RoHS3 Compliant (exact match required)

The following parts meet all substitution criteria and are electrically and mechanically interchangeable with the LGX2W331MELB45:

450VXH330MEFCSN30X40 (Rubycon VXH series)
ELXS451VSN331MR40S (Chemi-Con LXS series)

Parameter Comparison

Parameter	LGX2W331MELB45 (Nichicon)	450VXH330MEFCSN30X40 (Rubycon)	ELXS451VSN331MR40S (Chemi-Con)
Capacitance	330 µF	330 µF	330 µF
Voltage Rating	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C	5000 Hrs @ 105°C	5000 Hrs @ 105°C
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Polarization	Polar	Polar	Polar
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Diameter	1.181" (30.00 mm)	1.181" (30.00 mm)	1.181" (30.00 mm)
Height (Max)	1.850" (47.00 mm)	1.654" (42.00 mm)	1.654" (42.00 mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
RoHS Status	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—LGX2W331MELB45, 450VXH330MEFCSN30X40, and ELXS451VSN331MR40S—are active production components with full RoHS3 compliance and REACH unaffected status. Selection between these parts may be based on availability, lead time, or inventory considerations, as all meet identical electrical and mechanical specifications for 330 µF, 450 V aluminum electrolytic capacitor applications.

The Rubycon 450VXH330MEFCSN30X40 and Chemi-Con ELXS451VSN331MR40S both feature reduced maximum height (1.654" vs. 1.850"), which may provide space advantages in compact PCB layouts while maintaining full electrical equivalence.

Frequently Asked Questions (FAQ)

Q: Are these parts truly interchangeable? A: Yes. The LGX2W331MELB45, 450VXH330MEFCSN30X40, and ELXS451VSN331MR40S are electrically and mechanically interchangeable. All share identical capacitance, voltage rating, tolerance, lifetime rating, operating temperature range, lead spacing, diameter, and package type.

Q: Does the height difference affect compatibility? A: The substitute parts feature a maximum seated height of 1.654" (42.00 mm) compared to 1.850" (47.00 mm) for the original part. This reduced height does not prevent substitution and may provide layout advantages. Verify clearance in your specific PCB design.

Q: Are all parts RoHS3 compliant? A: Yes. All three parts are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the snap-in package type? A: The snap-in package type indicates these capacitors are designed for through-hole mounting with mechanical retention via snap-fit terminals. All substitute parts maintain this package configuration, ensuring compatibility with existing PCB footprints and assembly processes.

Q: Can I use these parts interchangeably in production? A: Yes, provided your design accommodates the height variation noted above. All parts meet identical electrical specifications and regulatory requirements for general-purpose high-voltage filtering applications.

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