Nichicon LLS2E391MELY Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The Nichicon LLS2E391MELY is a 390 µF, 250 V aluminum electrolytic capacitor in radial, can snap-in package configuration. This component is designed for general-purpose applications requiring stable capacitance performance across extended operating temperature ranges. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when inventory constraints, lead time requirements, or specific mechanical packaging needs necessitate alternative sourcing while maintaining electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

LLS2E391MELY

NichiconIn Stock: 1024LLS2E391MELY Datasheet

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LLS2E391MELA

NichiconIn Stock: 836LLS2E391MELA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Nichicon LLS2E391MELY is determined by strict equivalence across the following critical parameters:

• Capacitance value: 390 µF (exact match required)
• Rated voltage: 250 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime specification: 3000 Hrs @ 85°C (exact match required)
• Operating temperature range: -40°C ~ 85°C (exact match required)
• Lead spacing: 10.00 mm (exact match required)
• Mounting type: Through Hole (exact match required)
• Package configuration: Radial, Can - Snap-In (exact match required)
• Polarization: Polar (exact match required)
• Compliance certifications: RoHS3 Compliant, REACH Unaffected (exact match required)

The identified substitute part LLS2E391MELA meets all critical electrical parameters and compliance requirements. Physical dimensions (can diameter and height) may vary within the mechanical envelope while maintaining lead spacing and mounting compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the Nichicon LLS2E391MELY and LLS2E391MELA maintain Active product status with full RoHS3 compliance and REACH unaffected certification. Selection between these parts is based on mechanical fit requirements within the target application.

The LLS2E391MELY features a 20.00 mm diameter can with 40.00 mm seated height. The LLS2E391MELA features a 25.00 mm diameter can with 32.00 mm seated height. Both maintain identical 10.00 mm lead spacing and snap-in mounting configuration.

Electrical performance is equivalent across all specified parameters: capacitance, voltage rating, tolerance, lifetime, operating temperature range, and ripple current ratings. Ripple current values for the substitute part are within normal manufacturing variation for this component class.

Selection should be determined by available board space and mechanical envelope constraints. Both parts are suitable for general-purpose applications requiring 390 µF capacitance at 250 V with 3000-hour lifetime at 85°C operating temperature.

Frequently Asked Questions (FAQ)

Q: Can LLS2E391MELA be used as a direct replacement for LLS2E391MELY?

A: Yes, provided the mechanical envelope of the application accommodates the different can dimensions. The LLS2E391MELA has a larger diameter (25.00 mm vs. 20.00 mm) but shorter height (32.00 mm vs. 40.00 mm). Lead spacing remains identical at 10.00 mm, and all electrical parameters are equivalent.

Q: Are the electrical specifications identical between these parts?

A: Yes. Both parts share identical capacitance (390 µF), voltage rating (250 V), tolerance (±20%), lifetime (3000 Hrs @ 85°C), operating temperature range (-40°C ~ 85°C), and polarization (Polar). Ripple current ratings differ slightly due to physical design variations but remain within acceptable tolerance for this component class.

Q: What is the primary difference between these substitute parts?

A: The primary difference is physical packaging. The LLS2E391MELY uses a smaller diameter can (20.00 mm) with greater height (40.00 mm), while the LLS2E391MELA uses a larger diameter can (25.00 mm) with reduced height (32.00 mm). Both employ identical snap-in mounting with 10.00 mm lead spacing.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the LLS2E391MELY and LLS2E391MELA are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Which part should be selected for space-constrained applications?

A: Selection depends on specific space constraints. For applications with limited radial space, the LLS2E391MELA (25.00 mm diameter) may not fit. For applications with limited vertical space, the LLS2E391MELY (40.00 mm height) may not fit. Verify mechanical envelope requirements before selection.