LQSW6331MELA50 Equivalent & Substitute Parts

Part Overview

The LQSW6331MELA50 is a 330 µF, 420 V aluminum electrolytic capacitor manufactured by Nichicon in the LQS series. This radial, snap-in can capacitor is designed for general-purpose applications requiring high voltage energy storage with a rated lifetime of 3000 hours at 105°C. The part is currently active in production with full RoHS3 compliance.

Substitute parts become necessary when the original manufacturer part is unavailable, when inventory constraints require alternative sourcing, or when design specifications allow for compatible alternatives that meet or exceed the electrical and mechanical requirements of the original component.

Substiute Parts

LQSW6331MELA50

NichiconIn Stock: 528594LQSW6331MELA50 Datasheet

Current PartRFQ

450MXG330MEFCSN25X50

RubyconIn Stock: 273875450MXG330MEFCSN25X50 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

The 450MXG330MEFCSN25X50 (Rubycon MXG series) qualifies as a direct substitute for the LQSW6331MELA50 based on the following criteria:

Matching Parameters:

• Capacitance: 330 µF (identical)
• Tolerance: ±20% (identical)
• Lifetime: 3000 Hrs @ 105°C (identical)
• Operating Temperature: -25°C ~ 105°C (identical)
• Polarization: Polar (identical)
• Package Type: Radial, Can - Snap-In (identical)
• Lead Spacing: 0.394" (10.00mm) (identical)
• Diameter: 0.984" (25.00mm) (identical)
• Height: 2.047" (52.00mm) (identical)
• Mounting Type: Through Hole (identical)
• RoHS Status: ROHS3 Compliant (identical)

Upgraded Parameter:

• Voltage Rating: 450 V (exceeds 420 V requirement)

The substitute part maintains all critical electrical and mechanical specifications while providing a higher voltage rating, making it suitable for direct replacement in applications designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

Both the LQSW6331MELA50 and 450MXG330MEFCSN25X50 are active production parts with full RoHS3 compliance and REACH unaffected status. The Rubycon MXG substitute provides equivalent functionality with a 30 V higher voltage rating (450 V vs. 420 V), maintaining identical physical dimensions and mounting characteristics. Selection between these parts should be based on availability, lead time, and cost considerations, as both meet the specified electrical and mechanical requirements for general-purpose high-voltage energy storage applications.

Frequently Asked Questions (FAQ)

Q: Can the 450MXG330MEFCSN25X50 be used as a direct replacement for the LQSW6331MELA50?

A: Yes. Both parts share identical capacitance (330 µF), tolerance (±20%), lifetime rating (3000 Hrs @ 105°C), operating temperature range (-25°C ~ 105°C), and physical dimensions. The substitute features a higher voltage rating (450 V vs. 420 V), which is compatible with circuits designed for the original 420 V part.

Q: Are there any mechanical compatibility concerns?

A: No. Both parts are radial, snap-in aluminum electrolytic capacitors with identical lead spacing (10.00mm), diameter (25.00mm), and height (52.00mm). They mount identically as through-hole components.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LQSW6331MELA50 and 450MXG330MEFCSN25X50 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference in ripple current handling?

A: The Rubycon MXG substitute exhibits higher ripple current capacity at 120 Hz (1.82 A vs. 1.42 A), providing additional margin for applications with significant AC ripple components.

Q: Are there any thermal performance differences?

A: Both parts maintain identical lifetime ratings of 3000 hours at 105°C and operate across the same temperature range (-25°C ~ 105°C).