Equivalent & Substitute Parts for LLG2W331MELC30

Part Overview

The LLG2W331MELC30 is a 330 µF, 450 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is rated for 2000 hours at 85°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 manufacturer part becomes unavailable, when design requirements demand extended temperature ratings or improved reliability characteristics, or when alternative suppliers offer equivalent electrical and mechanical performance within the same package footprint.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	450 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Case Diameter	1.378" (35.00 mm)
Height (Seated Max)	1.260" (32.00 mm)
Mounting Type	Through Hole
Polarization	Polar
Operating Temperature Range	-25°C ~ 85°C
Lifetime Rating	2000 Hrs @ 85°C

Substitute Part Grouping Explanation

Substitution eligibility for the LLG2W331MELC30 is determined by the following mandatory parameters:

Capacitance: 330 µF (exact match required)
Voltage Rating: 450 V (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Case Diameter: 1.378" (35.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

All substitute parts listed meet these core electrical and mechanical parameters. Variations in lifetime rating, operating temperature range, ripple current specifications, and ESR values do not disqualify a part from substitution but indicate performance differences suitable for specific application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Operating Temp Range	Lifetime @ Temp	Lead Spacing	Case Diameter	Height (Max)	RoHS Status	Inventory
LLG2W331MELC30	Nichicon	LLG	330 µF	450 V	±20%	-25°C ~ 85°C	2000 Hrs @ 85°C	0.394" (10.00 mm)	1.378" (35.00 mm)	1.260" (32.00 mm)	ROHS3	1,000,400 Pcs
LGG2W331MELC30	Nichicon	LGG	330 µF	450 V	±20%	-25°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	1.378" (35.00 mm)	1.260" (32.00 mm)	ROHS3	79,498 Pcs
450MXH330MEFCSN35X30	Rubycon	MXH	330 µF	450 V	±20%	-25°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	1.378" (35.00 mm)	1.260" (32.00 mm)	ROHS3	25,870 Pcs
ESMR451VSN331MA25S	Chemi-Con	SMR	330 µF	450 V	±20%	-25°C ~ 85°C	2000 Hrs @ 85°C	0.394" (10.00 mm)	1.378" (35.00 mm)	1.083" (27.50 mm)	RoHS	2,000 Pcs
B43634C5337M000	EPCOS - TDK Electronics	B43634	330 µF	450 V	±20%	-25°C ~ 85°C	8000 Hrs @ 85°C	0.394" (10.00 mm)	1.378" (35.00 mm)	1.260" (32.00 mm)	ROHS3	1,372 Pcs
B43640C5337M000	EPCOS - TDK Electronics	B43640	330 µF	450 V	±20%	-40°C ~ 105°C	2000 Hrs @ 105°C	0.394" (10.00 mm)	1.378" (35.00 mm)	1.260" (32.00 mm)	ROHS3	1,233 Pcs
380LQ331M450A022	Cornell Dubilier Electronics (CDE)	380LQ	330 µF	450 V	±20%	-25°C ~ 85°C	2000 Hrs @ 85°C	0.394" (10.00 mm)	1.378" (35.00 mm)	1.260" (32.00 mm)	ROHS3	1,846 Pcs
ESMQ451VSN331MA30S	Chemi-Con	SMQ	330 µF	450 V	±20%	-25°C ~ 85°C	2000 Hrs @ 85°C	0.394" (10.00 mm)	1.378" (35.00 mm)	1.260" (32.00 mm)	RoHS	767 Pcs

Engineering Selection Recommendations

All listed substitute parts maintain identical electrical specifications (330 µF, 450 V, ±20% tolerance) and mechanical compatibility (radial snap-in package, 10.00 mm lead spacing, 35.00 mm case diameter) with the LLG2W331MELC30.

Selection among substitutes should be based on the following criteria:

Extended Temperature Operation: Parts LGG2W331MELC30, 450MXH330MEFCSN35X30, and B43640C5337M000 support operating temperatures to 105°C, compared to 85°C for the original part. B43640C5337M000 additionally extends the lower temperature limit to -40°C.

Extended Lifetime Rating: B43634C5337M000 provides 8000 hours at 85°C, compared to 2000 hours for the original part, offering improved reliability for long-term applications.

Compliance Status: All parts are ROHS3 or RoHS compliant and REACH unaffected. ESMR451VSN331MA25S and ESMQ451VSN331MA30S carry RoHS compliance; all others are ROHS3 compliant.

Physical Height Variation: ESMR451VSN331MA25S has a seated height of 1.083" (27.50 mm), compared to 1.260" (32.00 mm) for all other parts. This dimension difference may affect board layout compatibility.

Inventory Availability: LLG2W331MELC30 has the highest inventory level at 1,000,400 pieces. LGG2W331MELC30 and 450MXH330MEFCSN35X30 offer substantial availability at 79,498 and 25,870 pieces respectively.

Frequently Asked Questions (FAQ)

Q: Can I substitute LGG2W331MELC30 for LLG2W331MELC30 in my design?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (450 V), tolerance (±20%), package type (radial snap-in), lead spacing (10.00 mm), and case diameter (35.00 mm). LGG2W331MELC30 offers extended operating temperature to 105°C and improved lifetime rating at that temperature, making it suitable for applications requiring higher thermal performance.

Q: What is the difference between the EPCOS parts B43634C5337M000 and B43640C5337M000?

A: Both parts maintain identical electrical and mechanical specifications. B43634C5337M000 provides 8000 hours lifetime at 85°C with operating range -25°C to 85°C. B43640C5337M000 provides 2000 hours lifetime at 105°C with extended operating range -40°C to 105°C. Selection depends on whether your application prioritizes extended lifetime at standard temperature or extended temperature operation.

Q: Why does ESMR451VSN331MA25S have a different height?

A: ESMR451VSN331MA25S has a seated height of 1.083" (27.50 mm) versus 1.260" (32.00 mm) for other parts. This dimension difference is a physical characteristic of the Chemi-Con SMR series. Verify board layout clearance before substitution to ensure the reduced height does not create mechanical or electrical issues in your application.

Q: Are all substitute parts through-hole mounted?

A: Yes. All listed parts are through-hole mounted with 0.394" (10.00 mm) lead spacing, maintaining compatibility with existing PCB designs for the LLG2W331MELC30.

Q: Which substitute offers the best long-term reliability?

A: B43634C5337M000 provides the highest lifetime rating at 8000 hours at 85°C, compared to 2000 hours for most other parts. For applications requiring extended temperature operation, LGG2W331MELC30, 450MXH330MEFCSN35X30, and B43640C5337M000 support 105°C operation with corresponding lifetime ratings.

Q: Do all substitutes meet RoHS compliance?

A: Yes. All listed parts are either ROHS3 compliant or RoHS compliant. ESMR451VSN331MA25S and ESMQ451VSN331MA30S carry RoHS compliance; all other parts are ROHS3 compliant. All parts are REACH unaffected.

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