381EL271M350K032 Equivalent & Substitute Parts

Part Overview

The 381EL271M350K032 is a 270 µF, 350 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a radial, can snap-in package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement continuity. The part operates across a temperature range of -25°C to 105°C and is rated for 7000 hours at 105°C, making it suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Substiute Parts

381EL271M350K032

Cornell Dubilier Electronics (CDE)In Stock: 690381EL271M350K032 Datasheet

Current PartRFQ

381LQ271M350J032

Cornell Dubilier Electronics (CDE)In Stock: 1115381LQ271M350J032 Datasheet

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381LX271M350A012

Cornell Dubilier Electronics (CDE)In Stock: 1015381LX271M350A012 Datasheet

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381LX271M350K022

Cornell Dubilier Electronics (CDE)In Stock: 1034381LX271M350K022 Datasheet

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EET-HC2V271KA

Panasonic Electronic ComponentsIn Stock: 932EET-HC2V271KA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 381EL271M350K032 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Capacitance: 270 µF (exact match required)
• Voltage Rating: 350 V (minimum acceptable)
• Tolerance: ±20% (standard for aluminum electrolytic capacitors)
• Polarization: Polar (unidirectional)
• Package Type: Radial, Can - Snap-In (mechanical compatibility)
• Lead Spacing: 10.00 mm (PCB footprint compatibility)
• Mounting Type: Through Hole (assembly process compatibility)
• Operating Temperature Range: -25°C to 105°C (functional envelope)

Variable Parameters Permitting Substitution:

• ESR @ 120 Hz: Acceptable range 600–740 mOhm (performance variation)
• Lifetime @ 105°C: Acceptable range 2000–7000 hours (reliability variation)
• Physical Dimensions (Diameter/Height): Variation permitted within snap-in package constraints
• Ripple Current Ratings: Variation permitted within specified frequency bands

All substitute parts listed maintain identical capacitance, voltage rating, tolerance, polarization, lead spacing, and mounting type. Variations in ESR, lifetime, and physical dimensions are within acceptable engineering tolerances for this product category.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 381LX271M350K022

The 381LX271M350K022 is the recommended primary substitute for the obsolete 381EL271M350K032. This part maintains identical electrical specifications (270 µF, 350 V, ±20% tolerance) and mechanical compatibility (10.00 mm lead spacing, radial snap-in package, through-hole mounting). The 381LX271M350K022 is currently in active production status, ensuring long-term procurement availability. Physical dimensions (30.00 mm diameter, 32.00 mm height) are within acceptable variation for snap-in package constraints. The part is ROHS3 compliant and carries equivalent regulatory compliance to the original component.

Secondary Substitute: EET-HC2V271KA

The EET-HC2V271KA, manufactured by Panasonic Electronic Components, provides an alternative from a different manufacturer. This part matches all critical electrical parameters and maintains identical lead spacing and mounting configuration. The EET-HC2V271KA is active in production and RoHS compliant. Physical dimensions (30.00 mm diameter, 27.00 mm height) are compatible with the original footprint. ESR specification (614 mOhm @ 120 Hz) is within acceptable tolerance relative to the main part (600 mOhm).

Tertiary Substitute: 381LQ271M350J032

The 381LQ271M350J032 maintains full electrical and mechanical compatibility with identical capacitance, voltage, tolerance, and lead spacing. This part is currently active in production. Physical dimensions (25.00 mm diameter, 37.00 mm height) represent a more compact radial profile while maintaining snap-in compatibility. ESR specification (740 mOhm @ 120 Hz) is within acceptable range. Lifetime rating (2000 hours @ 105°C) is reduced compared to the original specification (7000 hours), which may be acceptable for applications not requiring extended thermal endurance.

Tertiary Substitute: 381LX271M350A012

The 381LX271M350A012 is an active production alternative with identical electrical specifications. Physical dimensions (35.00 mm diameter, 27.00 mm height) represent a larger diameter profile. This part is suitable for applications where vertical space is constrained but radial footprint expansion is acceptable. Lifetime rating (3000 hours @ 105°C) provides intermediate thermal endurance between the original specification and other alternatives.

All recommended substitutes are ROHS3 or RoHS compliant and carry REACH unaffected or equivalent regulatory status, ensuring compliance with current environmental and safety standards.

Frequently Asked Questions (FAQ)

Q1: Why is the 381EL271M350K032 being discontinued?

The 381EL271M350K032 is classified as obsolete by the manufacturer. Active equivalent parts with identical electrical and mechanical specifications are available from both Cornell Dubilier Electronics and alternative manufacturers, ensuring design continuity without functional compromise.

Q2: Can I use 381LX271M350K022 as a direct replacement for 381EL271M350K032?

Yes. The 381LX271M350K022 is a direct functional equivalent. Both parts share identical capacitance (270 µF), voltage rating (350 V), tolerance (±20%), lead spacing (10.00 mm), and package type (radial snap-in). Physical dimensions vary slightly (30.00 mm diameter for both, but 32.00 mm vs. 35.00 mm height), which is within acceptable tolerance for snap-in package constraints. PCB footprint compatibility is maintained.

Q3: What is the difference between ESR specifications across substitute parts?

ESR (Equivalent Series Resistance) affects ripple current handling and heat dissipation. The main part specifies 600 mOhm @ 120 Hz. Substitute parts range from 614 mOhm (EET-HC2V271KA) to 740 mOhm (381LQ271M350J032). These variations are within acceptable engineering tolerance for general-purpose applications. Applications requiring minimal ESR should prioritize EET-HC2V271KA (614 mOhm) or the original specification.

Q4: Does lifetime rating affect my component selection?

Lifetime rating indicates thermal endurance at 105°C. The original part specifies 7000 hours. Substitutes range from 2000 to 3000 hours. For applications operating continuously at elevated temperatures, the 381LX271M350K022 (3000 hours) or 381LX271M350A012 (3000 hours) provide better thermal endurance than 381LQ271M350J032 or EET-HC2V271KA (both 2000 hours). For standard operating conditions, all substitutes are acceptable.

Q5: Are there physical dimension constraints I should consider?

All substitute parts maintain the critical 10.00 mm lead spacing required for PCB footprint compatibility. Diameter and height variations exist: the main part is 30.00 mm diameter × 35.00 mm height. Substitutes range from 25.00 mm to 35.00 mm diameter and 27.00 mm to 37.00 mm height. Verify available PCB space before selection. Snap-in mounting compatibility is maintained across all alternatives.

Q6: Which substitute offers the best overall compatibility?

The 381LX271M350K022 provides the closest dimensional match (30.00 mm diameter, 32.00 mm height vs. original 30.00 mm × 35.00 mm) while maintaining active production status, ROHS3 compliance, and acceptable electrical specifications. This part is recommended as the primary replacement.

Q7: Can I substitute a Panasonic part for a Cornell Dubilier part?

Yes. The EET-HC2V271KA (Panasonic) meets all critical electrical and mechanical requirements. Cross-manufacturer substitution is acceptable when capacitance, voltage rating, tolerance, lead spacing, and package type are identical. Verify compliance certifications and supply chain availability for your specific application.

Q8: What compliance certifications should I verify?

All recommended substitutes are ROHS3 compliant or RoHS compliant, meeting current environmental standards. REACH status is unaffected or equivalent across all parts. ECCN classification is EAR99 for all components. Verify specific compliance requirements for your end-use application and regional regulations.