LAQ2P331MELC25 Equivalent & Substitute Parts

Part Overview

The LAQ2P331MELC25 is a 330 µF, 220 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is rated for 2000 hours at 105°C and is designed for general-purpose applications requiring through-hole mounting. The part is active and ROHS3 compliant.

Equivalent and substitute parts are identified when design requirements allow for higher voltage ratings, extended operational lifetimes, or alternative manufacturer sourcing while maintaining the same capacitance value, tolerance, physical dimensions, and mounting configuration.

Substiute Parts

LAQ2P331MELC25

NichiconIn Stock: 860LAQ2P331MELC25 Datasheet

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LGU2F331MELC

NichiconIn Stock: 1350LGU2F331MELC Datasheet

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B43508C9337M000

EPCOS - TDK ElectronicsIn Stock: 1698B43508C9337M000 Datasheet

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B43640D9337M000

EPCOS - TDK ElectronicsIn Stock: 274137B43640D9337M000 Datasheet

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B43644F9337M000

EPCOS - TDK ElectronicsIn Stock: 1342B43644F9337M000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

• Capacitance: Must be 330 µF (exact match)
• Tolerance: Must be ±20% (exact match)
• Physical Dimensions: Lead spacing 0.394" (10.00mm), diameter 1.378" (35.00mm), height 1.063" (27.00mm) maximum (exact match for PCB compatibility)
• Mounting Type: Must be through-hole, radial, can snap-in (exact match)
• Polarization: Must be polar (exact match)
• Voltage Rating: May be equal to or higher than 220 V (uprating permitted)
• Lifetime: May be equal to or longer than 2000 Hrs @ 105°C (extended lifetime acceptable)
• Operating Temperature: Must encompass -25°C to 105°C minimum
• Compliance: Must maintain ROHS3 compliance

The following parts meet these substitution criteria:

LGU2F331MELC (Nichicon): 315 V rated, 3000 Hrs @ 105°C lifetime B43508C9337M000 (EPCOS - TDK Electronics): 400 V rated, 3000 Hrs @ 105°C lifetime B43640D9337M000 (EPCOS - TDK Electronics): 400 V rated, 2000 Hrs @ 105°C lifetime B43644F9337M000 (EPCOS - TDK Electronics): 400 V rated, 5000 Hrs @ 105°C lifetime

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original LAQ2P331MELC25.

LGU2F331MELC provides a voltage uprating to 315 V with extended lifetime to 3000 Hrs @ 105°C, maintaining Nichicon manufacturer continuity within the same product family.

B43508C9337M000, B43640D9337M000, and B43644F9337M000 are EPCOS - TDK Electronics alternatives offering 400 V voltage rating. These parts provide expanded operating temperature range to -40°C minimum. B43644F9337M000 offers the longest operational lifetime at 5000 Hrs @ 105°C. B43640D9337M000 matches the original 2000 Hrs @ 105°C lifetime specification. All three EPCOS variants provide specified ESR values at 100 Hz, ranging from 320 to 370 mOhm.

Selection among substitutes depends on application voltage margin requirements, desired operational lifetime, and manufacturer preference.

Frequently Asked Questions (FAQ)

Q: Can LAQ2P331MELC25 be replaced with a higher voltage-rated substitute?

A: Yes. Substitutes rated at 315 V or 400 V are electrically compatible in circuits designed for 220 V operation. Higher voltage ratings provide additional safety margin and do not degrade performance in lower-voltage applications.

Q: Are physical dimensions identical across all listed parts?

A: Yes. All substitute parts maintain identical lead spacing (0.394" / 10.00mm), diameter (1.378" / 35.00mm), and maximum seated height (1.063" / 27.00mm), ensuring direct PCB footprint compatibility.

Q: What is the difference between Nichicon and EPCOS - TDK Electronics substitutes?

A: Both manufacturers produce equivalent 330 µF snap-in aluminum electrolytic capacitors meeting the same physical and electrical specifications. Nichicon LGU2F331MELC maintains manufacturer continuity. EPCOS - TDK Electronics B43508C9337M000, B43640D9337M000, and B43644F9337M000 are alternative sources with identical package and mounting configuration.

Q: Does operating temperature range affect substitution eligibility?

A: The original part operates from -25°C to 105°C. Substitute parts with -40°C to 105°C range are compatible and provide extended low-temperature operation. This does not restrict use in applications limited to -25°C minimum.

Q: What does ESR (Equivalent Series Resistance) indicate?

A: ESR is the internal resistance of the capacitor at specified frequency. Lower ESR values indicate better high-frequency performance and reduced heat generation. EPCOS - TDK Electronics parts provide specified ESR values; Nichicon parts do not specify this parameter in the provided data.

Q: Can lifetime specifications be mixed in the same circuit?

A: Yes. Lifetime ratings indicate expected operational duration at maximum rated temperature and ripple current. Mixing parts with different lifetime ratings does not create compatibility issues; circuit reliability is determined by the component with the shortest rated lifetime.