381LX331M100H012 Equivalent & Substitute Parts

Part Overview

The Cornell Dubilier Electronics 381LX331M100H012 is a 330 µF, 100 V aluminum electrolytic capacitor in a radial, can snap-in package. This component is rated for general-purpose applications with an operating temperature range of -40°C to 105°C and a lifetime specification of 3000 hours at 105°C. The part maintains Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are required for circuit design flexibility, inventory management, or component availability.

Substiute Parts

381LX331M100H012

Cornell Dubilier Electronics (CDE)In Stock: 838381LX331M100H012 Datasheet

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B43508A2337M000

EPCOS - TDK ElectronicsIn Stock: 2250B43508A2337M000 Datasheet

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LGN2D331MELZ25

NichiconIn Stock: 1164LGN2D331MELZ25 Datasheet

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LGN2P331MELZ25

NichiconIn Stock: 1296LGN2P331MELZ25 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 381LX331M100H012 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Capacitance: 330 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -40°C ~ 105°C (exact match required)
• Lifetime @ Temperature: 3000 Hrs @ 105°C (exact match required)
• Lead Spacing: 0.394" (10.00 mm) (exact match required)
• Size / Dimension: 0.866" Dia (22.00 mm) (exact match required)
• Height - Seated (Max): 1.063" (27.00 mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can - Snap-In (exact match required)
• Polarization: Polar (exact match required)

Allowable Variation Parameters:

• Voltage - Rated: Substitute parts may have equal or higher voltage ratings
• ESR (Equivalent Series Resistance): Substitute parts may have equal or lower ESR values
• Manufacturer: Different manufacturers acceptable if all other parameters match

The identified substitute parts meet all critical parameters while offering enhanced voltage ratings and improved ESR characteristics.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and full RoHS3 compliance, ensuring regulatory alignment with the original 381LX331M100H012 component.

B43508A2337M000 (EPCOS - TDK Electronics): This substitute provides a 200 V rated voltage with improved ESR of 350 mOhm at 100 Hz, compared to the main part's 550 mOhm specification. The higher voltage rating provides additional design margin for circuits operating at or near the 100 V specification of the original part.

LGN2D331MELZ25 (Nichicon): This substitute provides a 200 V rated voltage with specified ripple current capabilities of 1.2 A at 120 Hz and 1.8 A at 50 kHz. The higher voltage rating accommodates applications requiring enhanced voltage headroom.

LGN2P331MELZ25 (Nichicon): This substitute provides a 220 V rated voltage with specified ripple current capabilities of 1.26 A at 120 Hz and 1.89 A at 50 kHz. The elevated voltage rating supports circuits with higher voltage requirements while maintaining identical physical and thermal characteristics.

All substitute parts share identical mechanical dimensions, lead spacing, mounting configuration, and thermal lifetime specifications with the original component, ensuring direct board-level compatibility.

Frequently Asked Questions (FAQ)

Q: Can the B43508A2337M000 be used in place of the 381LX331M100H012?

A: Yes. The B43508A2337M000 maintains identical capacitance (330 µF), tolerance (±20%), operating temperature range (-40°C ~ 105°C), lifetime specification (3000 Hrs @ 105°C), physical dimensions (0.866" Dia, 1.063" height), lead spacing (0.394"), and mounting configuration (Through Hole, Radial, Can - Snap-In). The substitute features a higher voltage rating (200 V versus 100 V) and lower ESR (350 mOhm versus 550 mOhm), both of which are compatible with the original application.

Q: What is the difference between the Nichicon LGN2D331MELZ25 and LGN2P331MELZ25?

A: Both Nichicon parts are 330 µF aluminum electrolytic capacitors with identical physical dimensions, lead spacing, and mounting configuration. The primary difference is the voltage rating: LGN2D331MELZ25 is rated at 200 V, while LGN2P331MELZ25 is rated at 220 V. Both maintain the same 3000-hour lifetime at 105°C and operating temperature range of -40°C to 105°C.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The B43508A2337M000, LGN2D331MELZ25, and LGN2P331MELZ25 are all RoHS3 compliant and REACH unaffected, matching the regulatory status of the original 381LX331M100H012 component.

Q: Do the substitute parts have the same physical footprint as the original?

A: Yes. All substitute parts share identical mechanical specifications: 0.866" diameter, 1.063" maximum seated height, 0.394" lead spacing, and radial, can snap-in package configuration. Direct board-level substitution is supported without PCB layout modifications.

Q: What is the significance of the higher voltage ratings on the substitute parts?

A: The substitute parts with 200 V and 220 V ratings provide additional voltage margin compared to the original 100 V specification. In applications operating at or near the 100 V design point, these higher-rated substitutes offer enhanced reliability and reduced stress on the dielectric material. The higher voltage rating does not affect capacitance value, physical size, or thermal characteristics.

Q: Can these parts be used interchangeably in all applications?

A: Substitution is valid for applications where the original 381LX331M100H012 specifications are met. The substitute parts maintain all critical electrical and mechanical parameters. Circuit designers must verify that the higher voltage ratings of the substitute parts do not introduce unintended design changes or performance alterations specific to their application.