LGN2V331MELA40 Equivalent & Substitute Parts

Part Overview

The LGN2V331MELA40 is a 330 µF, 350 V aluminum electrolytic capacitor manufactured by Nichicon in the LGN series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring through-hole mounting. The part is currently active in production with 744 units in stock. Alternative equivalent and substitute parts are necessary to address supply chain flexibility, extended component lifetime requirements, or specific design parameter needs while maintaining functional compatibility within the application circuit.

Substiute Parts

LGN2V331MELA40

NichiconIn Stock: 784LGN2V331MELA40 Datasheet

Current PartRFQ

ELXS401VSN331MQ40S

Chemi-ConIn Stock: 989ELXS401VSN331MQ40S Datasheet

UpgradeRFQ

EKMQ351VSN331MP45S

Chemi-ConIn Stock: 1286EKMQ351VSN331MP45S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LGN2V331MELA40 is determined by the following critical parameters:

Core Compatibility Requirements:

• Capacitance value: 330 µF (exact match required)
• Voltage rating: Equal to or greater than 350 V
• Tolerance: ±20% (standard for aluminum electrolytic capacitors)
• Polarization: Polar (mandatory)
• Package type: Radial, Can - Snap-In (mechanical compatibility)
• Mounting type: Through Hole (PCB assembly compatibility)
• Lead spacing: 0.394" (10.00 mm) (footprint requirement)
• Operating temperature range: -25°C ~ 105°C minimum (functional range)
• RoHS3 compliance: Required for regulatory alignment

Secondary Considerations:

• Lifetime @ 105°C: Extended lifetime provides improved reliability margin
• Ripple current ratings: Must support application-specific AC current demands
• Physical dimensions: Diameter and height must fit within PCB layout constraints

Substitute parts meeting all core requirements are electrically and mechanically interchangeable with the LGN2V331MELA40 in standard applications.

Parameter Comparison

Engineering Selection Recommendations

ELXS401VSN331MQ40S (Chemi-Con LXS Series - Upgrade Option)

This part qualifies as an upgrade substitute. It maintains all core compatibility parameters with the LGN2V331MELA40 while providing enhanced performance characteristics. The 400 V voltage rating exceeds the 350 V requirement, offering additional voltage margin. The 5000 Hrs @ 105°C lifetime specification extends operational reliability compared to the 3000 Hrs rating of the main part. Ripple current capacity is increased across both low and high frequency ranges. Physical dimensions remain compatible with standard PCB layouts. ROHS3 compliance and active product status confirm regulatory alignment and supply continuity.

EKMQ351VSN331MP45S (Chemi-Con KMQ Series - Similar Option)

This part meets all core electrical compatibility requirements with identical capacitance, voltage rating, tolerance, and operating temperature range. Lead spacing and mounting type are unchanged. However, the 2000 Hrs @ 105°C lifetime is reduced relative to the main part, and physical dimensions differ: diameter is 0.866" (22.00 mm) versus 0.984" (25.00 mm), and height is 1.850" (47.00 mm) versus 1.654" (42.00 mm). This part is suitable only when PCB layout constraints permit the dimensional variation. ROHS3 compliance and active product status are confirmed.

Frequently Asked Questions (FAQ)

Q: Can ELXS401VSN331MQ40S replace LGN2V331MELA40 in any application?

A: ELXS401VSN331MQ40S is electrically and mechanically compatible with LGN2V331MELA40 for applications operating at or below 350 V. The higher 400 V rating provides additional safety margin. Physical dimensions are nearly identical, ensuring PCB footprint compatibility. Both parts share identical lead spacing (10.00 mm) and mounting type (through-hole snap-in). Substitution is direct without circuit modification.

Q: What are the dimensional constraints when considering EKMQ351VSN331MP45S?

A: EKMQ351VSN331MP45S has a smaller diameter (0.866" versus 0.984") but greater height (1.850" versus 1.654"). Lead spacing remains 10.00 mm. PCB layout must accommodate the increased vertical clearance. Verify that the reduced diameter does not create mechanical instability in the snap-in mounting interface and that the increased height does not conflict with adjacent components or enclosure constraints.

Q: Does the reduced lifetime of EKMQ351VSN331MP45S affect reliability?

A: EKMQ351VSN331MP45S specifies 2000 Hrs @ 105°C compared to 3000 Hrs for the main part. This represents a 33% reduction in rated operational life at maximum temperature. Selection should account for application duty cycle, ambient temperature profile, and required system reliability targets. For applications with extended operational life requirements or elevated ambient temperatures, the upgrade option (ELXS401VSN331MQ40S) with 5000 Hrs rating is preferred.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. LGN2V331MELA40, ELXS401VSN331MQ40S, and EKMQ351VSN331MP45S are all ROHS3 compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes.

Q: What is the significance of increased ripple current ratings in ELXS401VSN331MQ40S?

A: Ripple current capacity indicates the maximum AC current the capacitor can safely handle without exceeding temperature limits. ELXS401VSN331MQ40S provides 1.47 A @ 120 Hz and 2.1021 A @ 50 kHz versus 1.2 A and 1.716 A respectively for the main part. Higher ripple current capability allows operation in higher-stress AC environments without thermal degradation. This is a performance advantage with no compatibility penalty.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: ELXS401VSN331MQ40S is directly interchangeable with identical lead spacing and compatible dimensions. EKMQ351VSN331MP45S requires verification of dimensional fit due to diameter and height differences. Both maintain the same snap-in mounting interface and through-hole lead configuration. Verify mechanical clearance before assembly.