LQS2G331MELA45 Equivalent & Substitute Parts

Part Overview

The LQS2G331MELA45 is a 330 µF, 400 V aluminum electrolytic capacitor manufactured by Nichicon in the LQS series. This radial, snap-in through-hole component is rated for 3000 hours at 105°C and is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part is ROHS3 compliant and currently active in production with substantial inventory availability.

Equivalent and substitute parts are identified when design requirements permit component replacement due to supply constraints, end-of-life transitions, or application-specific performance needs. Substitutes maintain electrical compatibility while potentially offering different thermal lifetimes, ripple current ratings, or mechanical dimensions within acceptable tolerances.

Substiute Parts

LQS2G331MELA45

NichiconIn Stock: 274186LQS2G331MELA45 Datasheet

Current PartRFQ

LGX2G331MELA45

NichiconIn Stock: 273897LGX2G331MELA45 Datasheet

DirectRFQ

LGN2G331MELA45

NichiconIn Stock: 274081LGN2G331MELA45 Datasheet

Parametric EquivalentRFQ

ELXS401VSN331MQ40S

Chemi-ConIn Stock: 989ELXS401VSN331MQ40S Datasheet

DirectRFQ

400MXG330MEFCSN25X45

RubyconIn Stock: 657047400MXG330MEFCSN25X45 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence in the following critical parameters:

• Electrical Equivalence: Capacitance (330 µF), voltage rating (400 V), and tolerance (±20%) must be identical
• Mechanical Compatibility: Lead spacing (10.00 mm), package type (Radial, Can - Snap-In), and mounting type (Through Hole) must match to ensure PCB footprint compatibility
• Thermal Performance: Operating temperature range (-25°C to 105°C) and polarization (Polar) must be maintained
• Compliance: RoHS3 compliance and REACH unaffected status required for regulated applications

Substitute parts are classified into two categories:

Direct Manufacturer Substitutes: Parts from the same or different manufacturers that maintain all critical parameters with potential variations in thermal lifetime or ripple current performance.

Parametric Equivalents: Parts that meet all electrical and mechanical requirements but may have different thermal lifetimes (3000 Hrs vs. 5000 Hrs) or ripple current specifications, permitting selection based on application-specific thermal or current demands.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, confirming ongoing manufacturer support and regulatory alignment for new designs and production environments.

LGX2G331MELA45 (Nichicon): Direct manufacturer substitute offering extended thermal lifetime of 5000 hours at 105°C compared to the 3000-hour rating of the LQS2G331MELA45. Identical mechanical dimensions and lead spacing ensure direct PCB compatibility. Selection is appropriate for applications requiring enhanced thermal endurance without design modification.

LGN2G331MELA45 (Nichicon): Parametric equivalent from Nichicon with matching 3000-hour thermal lifetime. Identical electrical and mechanical specifications provide seamless interchangeability. Selection is appropriate for supply continuity within the Nichicon product portfolio.

ELXS401VSN331MQ40S (Chemi-Con): Direct manufacturer substitute from Chemi-Con with 5000-hour thermal lifetime. Case diameter is 25.40 mm (versus 25.00 mm standard) and seated height is 42.00 mm (versus 47.00 mm standard). These dimensional variations require PCB layout verification to confirm mechanical clearance compatibility. Selection is appropriate when Chemi-Con supply is prioritized and mechanical constraints are satisfied.

400MXG330MEFCSN25X45 (Rubycon): Parametric equivalent from Rubycon with 3000-hour thermal lifetime and highest ripple current capability (2.464 A @ 10 kHz). Mechanical dimensions match the LQS2G331MELA45 standard. Selection is appropriate for applications with elevated ripple current demands or when Rubycon supply is required.

Frequently Asked Questions (FAQ)

Q: Can I substitute the LQS2G331MELA45 with any of these parts without PCB modification?

A: LGX2G331MELA45, LGN2G331MELA45, and 400MXG330MEFCSN25X45 maintain identical lead spacing (10.00 mm) and case diameter (25.00 mm), permitting direct PCB footprint compatibility. ELXS401VSN331MQ40S has a case diameter of 25.40 mm and height of 42.00 mm; PCB layout verification is required to confirm mechanical clearance.

Q: What is the difference between the LQS2G331MELA45 and LGX2G331MELA45?

A: Both are Nichicon products with identical electrical and mechanical specifications. The LGX2G331MELA45 offers extended thermal lifetime of 5000 hours at 105°C versus 3000 hours for the LQS2G331MELA45. Ripple current ratings differ slightly; selection depends on thermal performance requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, confirming regulatory alignment for regulated applications and new production environments.

Q: Which substitute part has the highest ripple current capability?

A: The 400MXG330MEFCSN25X45 (Rubycon) provides the highest ripple current rating at 2.464 A @ 10 kHz. Selection is appropriate for applications with elevated AC current demands.

Q: Can I use a substitute part with a different thermal lifetime?

A: Yes, provided the application thermal environment and component duty cycle are compatible with the substitute part's rated lifetime. Extended lifetime parts (5000 hours) offer enhanced thermal margin; reduced lifetime parts require confirmation that operating conditions remain within rated specifications.

Q: What inventory levels are available for each part?

A: LQS2G331MELA45: 274,082 pcs; LGX2G331MELA45: 273,882 pcs; LGN2G331MELA45: 273,982 pcs; ELXS401VSN331MQ40S: 921 pcs; 400MXG330MEFCSN25X45: 656,950 pcs. Inventory availability should be confirmed with the component supplier for current production requirements.