LGR2G331MELC40 Equivalent & Substitute Parts

Part Overview

The LGR2G331MELC40 is a 330 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is designed for general purpose applications requiring stable capacitance performance across extended operating temperatures (-25°C to 105°C) with a rated lifetime of 10,000 hours at 105°C. The part is currently active in production status with substantial inventory availability. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained while meeting specific application requirements or addressing supply chain considerations.

Substiute Parts

LGR2G331MELC40

NichiconIn Stock: 273937LGR2G331MELC40 Datasheet

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ETXH451VSN331MA40S

Chemi-ConIn Stock: 1178ETXH451VSN331MA40S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LGR2G331MELC40 is determined by the following critical parameters:

• Capacitance Value: Must be 330 µF (exact match required)
• Tolerance: Must be ±20% or tighter
• Package Configuration: Must be Radial, Can - Snap-In with identical lead spacing (10.00mm)
• Physical Dimensions: Must match diameter (35.00mm) and height (42.00mm) for PCB compatibility
• Mounting Type: Must be Through Hole
• Voltage Rating: Must be equal to or greater than 400 V
• Lifetime Rating: Must meet or exceed 10000 Hrs @ 105°C
• Operating Temperature: Must support -25°C ~ 105°C range
• Polarization: Must be Polar

The ETXH451VSN331MA40S from Chemi-Con meets all substitution criteria with an upgraded voltage rating of 450 V, providing enhanced margin for applications operating near rated voltage limits.

Parameter Comparison

Engineering Selection Recommendations

Both the LGR2G331MELC40 and ETXH451VSN331MA40S are active production components with full regulatory compliance. The Nichicon LGR2G331MELC40 is suitable for applications operating at or below 400 V with standard ripple current requirements. The Chemi-Con ETXH451VSN331MA40S provides a 50 V voltage margin increase and enhanced ripple current handling, making it applicable for circuits requiring additional voltage headroom or higher ripple current dissipation. Both components maintain identical physical footprints and mechanical compatibility, ensuring direct PCB substitution without layout modifications. Selection between these parts should be based on circuit voltage requirements and ripple current specifications rather than functional performance differences.

Frequently Asked Questions (FAQ)

Q: Can the ETXH451VSN331MA40S replace the LGR2G331MELC40 in existing designs?

A: Yes. Both components share identical capacitance (330 µF), tolerance (±20%), physical dimensions (35.00mm diameter, 42.00mm height), lead spacing (10.00mm), and package configuration (Radial, Can - Snap-In). The higher voltage rating (450 V vs 400 V) of the Chemi-Con part does not create compatibility issues and provides additional voltage margin.

Q: Are there mechanical compatibility concerns when substituting between these parts?

A: No. Both parts maintain identical lead spacing (10.00mm), physical diameter (35.00mm), and seated height (42.00mm). PCB footprints and mounting holes require no modification for direct substitution.

Q: What is the significance of the voltage rating difference?

A: The ETXH451VSN331MA40S operates at 450 V rated voltage compared to the LGR2G331MELC40 at 400 V. This 50 V difference provides additional safety margin in circuits operating near maximum voltage limits but does not affect performance in applications designed for 400 V operation.

Q: Do both parts meet the same regulatory requirements?

A: Both components are RoHS compliant and REACH unaffected. The LGR2G331MELC40 carries ROHS3 certification while the ETXH451VSN331MA40S carries standard RoHS certification. Both meet EAR99 export classification and 8532.22.0040 HTSUS code requirements.

Q: How do ripple current ratings compare?

A: The ETXH451VSN331MA40S provides higher ripple current capacity at both low frequency (1.32 A @ 120 Hz vs 1.2 A) and high frequency (1.8876 A @ 100 kHz vs 1.716 A @ 50 kHz), offering improved performance in high-ripple applications.