SLPX331M400C4P3 Equivalent & Substitute Parts Reference

Part Overview

The SLPX331M400C4P3 is a 330 µF, 400 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in radial, can snap-in configuration. This component is classified as Active product status and is designed for general-purpose applications requiring through-hole mounting with 10.00 mm lead spacing and 25.00 mm diameter form factor.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter ranges. The following substitute components meet the core functional requirements of the SLPX331M400C4P3 while offering alternative performance characteristics in lifetime rating, operating temperature range, and ripple current specifications.

Substiute Parts

SLPX331M400C4P3

Cornell Dubilier Electronics (CDE)In Stock: 887SLPX331M400C4P3 Datasheet

Current PartRFQ

400MXG330MEFCSN25X45

RubyconIn Stock: 657047400MXG330MEFCSN25X45 Datasheet

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450USG330MEFCSN25X45

RubyconIn Stock: 274028450USG330MEFCSN25X45 Datasheet

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LGN2G331MELA45

NichiconIn Stock: 274081LGN2G331MELA45 Datasheet

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LGX2G331MELA45

NichiconIn Stock: 273897LGX2G331MELA45 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SLPX331M400C4P3 is determined by strict equivalence in the following parameters:

Core Electrical Parameters (Non-Negotiable):

• Capacitance: 330 µF
• Tolerance: ±20%
• Polarization: Polar
• Voltage Rating: 400 V or higher

Core Mechanical Parameters (Non-Negotiable):

• Package / Case: Radial, Can - Snap-In
• Lead Spacing: 10.00 mm
• Size / Dimension: 25.00 mm Dia
• Height - Seated (Max): 47.00 mm
• Mounting Type: Through Hole

Compliance Parameters (Required):

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected
• Product Status: Active

Variable Parameters (Allowed to Differ):

• ESR (Equivalent Series Resistance)
• Lifetime @ Temperature
• Operating Temperature Range
• Ripple Current @ Low Frequency
• Ripple Current @ High Frequency

All four substitute parts meet the core electrical, mechanical, and compliance requirements. Differences in lifetime rating, maximum operating temperature, and ripple current capacity represent performance enhancements or alternative specifications suitable for different application environments.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are Active product status components with ROHS3 compliance and REACH Unaffected designation, meeting regulatory requirements equivalent to the SLPX331M400C4P3.

400MXG330MEFCSN25X45 (Rubycon MXG Series): Direct 400 V equivalent with extended operating temperature range to 105°C and 3000-hour lifetime at elevated temperature. Suitable for applications requiring higher thermal stability while maintaining identical voltage and capacitance specifications.

450USG330MEFCSN25X45 (Rubycon USG Series): Elevated voltage rating of 450 V with 330 µF capacitance. Maintains 3000-hour lifetime at 85°C. Appropriate for applications where voltage margin enhancement is required without thermal performance modification.

LGN2G331MELA45 (Nichicon LGN Series): 400 V equivalent with extended operating temperature to 105°C and 3000-hour lifetime at elevated temperature. Provides thermal performance enhancement comparable to the Rubycon MXG option.

LGX2G331MELA45 (Nichicon LGX Series): 400 V equivalent with extended operating temperature to 105°C and enhanced 5000-hour lifetime at elevated temperature. Represents the longest service life option among all substitutes, suitable for applications requiring maximum component longevity.

Frequently Asked Questions (FAQ)

Q: Can the 450USG330MEFCSN25X45 be used in place of the SLPX331M400C4P3 in a 400 V circuit?

A: Yes. The 450USG330MEFCSN25X45 has a rated voltage of 450 V, which exceeds the 400 V requirement. Higher voltage-rated capacitors are electrically compatible with lower voltage applications. All other electrical and mechanical parameters match the SLPX331M400C4P3 specification.

Q: What is the primary difference between the Nichicon LGN2G331MELA45 and LGX2G331MELA45?

A: Both parts are identical in capacitance, voltage, and mechanical dimensions. The LGX2G331MELA45 provides extended lifetime of 5000 hours at 105°C compared to 3000 hours for the LGN2G331MELA45. Selection depends on application longevity requirements.

Q: Are all substitute parts mechanically interchangeable with the SLPX331M400C4P3?

A: Yes. All substitute parts share identical lead spacing (10.00 mm), diameter (25.00 mm), height (47.00 mm), and snap-in radial can package configuration. Direct board-level substitution is supported without PCB modification.

Q: Which substitute part offers the best thermal performance?

A: The LGX2G331MELA45 and LGN2G331MELA45 both support operating temperatures to 105°C, compared to 85°C maximum for the SLPX331M400C4P3. The LGX2G331MELA45 additionally provides 5000-hour lifetime at 105°C, representing the highest thermal capability among all options.

Q: Do all substitute parts meet the same compliance standards as the SLPX331M400C4P3?

A: Yes. All four substitute parts are ROHS3 Compliant and REACH Unaffected, matching the regulatory compliance profile of the SLPX331M400C4P3.

Q: What is the significance of ESR (Equivalent Series Resistance) in capacitor selection?

A: ESR affects ripple current handling and heat generation. The SLPX331M400C4P3 specifies 603 mOhm @ 120Hz. Substitute parts do not provide ESR specifications in the available data. For applications where ESR is a critical parameter, direct measurement or manufacturer consultation is required.

Q: Can the SLPX331M400C4P3 be replaced with a lower voltage-rated substitute?

A: No. All substitute parts maintain 400 V or higher voltage rating. Substitution with lower voltage-rated components is not supported and would violate electrical safety requirements.