Equivalent & Substitute Parts for LLS2W271MELC

Part Overview

The LLS2W271MELC is a 270 µF, 450 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is rated for 3000 hours at 85°C and is designed for general-purpose applications requiring high-voltage energy storage and filtering. The part is Active status and ROHS3 compliant.

Substitute parts are identified when equivalent electrical ratings and mechanical compatibility are maintained across the same functional category. Alternative sources and enhanced thermal performance options are available from qualified manufacturers.

Substiute Parts

LLS2W271MELC

NichiconIn Stock: 274037LLS2W271MELC Datasheet

Current PartRFQ

LGX2W271MELC30

NichiconIn Stock: 273872LGX2W271MELC30 Datasheet

DirectRFQ

LLS2W271MELB

NichiconIn Stock: 273859LLS2W271MELB Datasheet

SimilarRFQ

380LQ271M450K022

Cornell Dubilier Electronics (CDE)In Stock: 7796380LQ271M450K022 Datasheet

SimilarRFQ

ESMQ451VSN271MQ40S

Chemi-ConIn Stock: 1127ESMQ451VSN271MQ40S Datasheet

SimilarRFQ

SLPX271M450E3P3

Cornell Dubilier Electronics (CDE)In Stock: 4654SLPX271M450E3P3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following criteria:

• Capacitance value: 270 µF (exact match required)
• Voltage rating: 450 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package type: Radial, Can - Snap-In (exact match required)
• Mounting type: Through Hole (exact match required)
• Lead spacing: 0.394" (10.00 mm) (exact match required)
• Polarization: Polar (exact match required)

All substitute parts listed meet these core electrical and mechanical parameters. Variations in physical dimensions (diameter and height), thermal ratings, ripple current specifications, and manufacturer origin are secondary considerations that do not disqualify substitution eligibility when primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain the core electrical specifications (270 µF, 450 V, ±20% tolerance) and mechanical compatibility (radial snap-in package, 10.00 mm lead spacing, through-hole mounting) required for direct substitution in applications designed for the LLS2W271MELC.

Nichicon LGX2W271MELC30: Extended thermal rating (5000 hours at 105°C versus 3000 hours at 85°C) and expanded operating temperature range (-25°C to 105°C) provide enhanced performance margin in thermally demanding environments. ROHS3 compliant. Slightly increased height (32.00 mm versus 30.00 mm) requires PCB layout verification.

Nichicon LLS2W271MELB: Same series as the primary part with identical thermal and electrical ratings. Dimensional variation (30.00 mm diameter, 35.00 mm height versus 35.00 mm diameter, 30.00 mm height) represents a form-factor alternative within the same product line. ROHS3 compliant.

Cornell Dubilier 380LQ271M450K022: Reduced thermal rating (2000 hours at 85°C) and specified ESR (737 mOhm @ 120 Hz). ROHS3 compliant. Suitable for applications where thermal stress is lower than the primary part specification.

Chemi-Con ESMQ451VSN271MQ40S: Reduced thermal rating (2000 hours at 85°C). Compact diameter (25.40 mm) with extended height (40.00 mm) for space-constrained designs. RoHS compliant. MSL rating: Not Applicable.

Cornell Dubilier SLPX271M450E3P3: Matched thermal rating (3000 hours at 85°C) with specified ESR (983 mOhm @ 120 Hz). Compact form factor (30.00 mm diameter and height). ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can I substitute the LLS2W271MELC with any of these parts without circuit redesign?

A: Yes, all listed parts maintain the required electrical specifications (270 µF, 450 V, ±20% tolerance) and mechanical compatibility (radial snap-in, 10.00 mm lead spacing). However, physical dimensions vary. Verify PCB layout clearances and mounting hole spacing before installation.

Q: What is the difference between the LLS2W271MELC and LGX2W271MELC30?

A: Both are Nichicon products with identical electrical ratings. The LGX series offers extended thermal performance (5000 hours at 105°C versus 3000 hours at 85°C) and wider operating temperature range (-25°C to 105°C). The LGX variant is 2.00 mm taller (32.00 mm versus 30.00 mm).

Q: Are there dimensional constraints I should consider?

A: Yes. The primary part (LLS2W271MELC) has a 35.00 mm diameter and 30.00 mm height. Substitute parts vary: LGX2W271MELC30 (35.00 mm × 32.00 mm), LLS2W271MELB (30.00 mm × 35.00 mm), 380LQ271M450K022 (30.00 mm × 32.00 mm), ESMQ451VSN271MQ40S (25.40 mm × 40.00 mm), and SLPX271M450E3P3 (30.00 mm × 30.00 mm). Confirm PCB layout compatibility before selection.

Q: What thermal ratings should I consider for my application?

A: The primary part and SLPX271M450E3P3 are rated for 3000 hours at 85°C. LGX2W271MELC30 extends to 5000 hours at 105°C for higher thermal stress environments. 380LQ271M450K022 and ESMQ451VSN271MQ40S are rated for 2000 hours at 85°C and are suitable for lower thermal stress applications.

Q: Are all substitute parts RoHS compliant?

A: Five of six substitute parts are ROHS3 compliant. ESMQ451VSN271MQ40S is RoHS compliant. All parts meet REACH requirements and carry EAR99 ECCN classification.

Q: What is the significance of ESR specifications listed for some parts?

A: ESR (Equivalent Series Resistance) affects ripple current handling and heat generation. Parts with specified ESR values (380LQ271M450K022 at 737 mOhm @ 120 Hz and SLPX271M450E3P3 at 983 mOhm @ 120 Hz) provide additional performance data for applications sensitive to impedance characteristics.