LLS2V561MELC Equivalent & Substitute Parts

Part Overview

The LLS2V561MELC is a 560 µF, 350 V aluminum electrolytic capacitor in radial, can snap-in configuration 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. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when thermal performance requirements differ.

Key Parameters

Parameter	Value
Capacitance	560 µF
Voltage - Rated	350 V
Tolerance	±20%
Lifetime @ Temperature	3000 Hrs @ 85°C
Operating Temperature Range	-25°C ~ 85°C
Lead Spacing	0.394" (10.00 mm)
Size / Dimension	1.378" Dia (35.00 mm)
Height - Seated (Max)	1.457" (37.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LLS2V561MELC is determined by strict equivalence in the following parameters: capacitance (560 µF), rated voltage (350 V), tolerance (±20%), lead spacing (10.00 mm), package type (Radial, Can - Snap-In), and mounting configuration (Through Hole). Parts are grouped into two categories:

Direct Substitutes (Interchangeable): LGN2V561MELC35 and LQS2V561MELC35 maintain identical electrical specifications and physical dimensions. These parts differ only in thermal performance characteristics (3000 Hrs @ 105°C versus 3000 Hrs @ 85°C) and ripple current ratings, which represent enhanced thermal stability. Both are Nichicon products with ROHS3 compliance and identical lead spacing and case dimensions.

Similar Substitute (Dimensional Variance): LLS2V561MELB shares the same series designation, electrical ratings, and thermal performance as the main part but differs in physical dimensions. The diameter is reduced to 1.181" (30.00 mm) and height is increased to 1.654" (42.00 mm), requiring verification of PCB layout compatibility before substitution.

Parameter Comparison

Parameter	LLS2V561MELC	LGN2V561MELC35	LQS2V561MELC35	LLS2V561MELB
Manufacturer	Nichicon	Nichicon	Nichicon	Nichicon
Series	LLS	LGN	LQS	LLS
Capacitance	560 µF	560 µF	560 µF	560 µF
Voltage - Rated	350 V	350 V	350 V	350 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ Temperature	3000 Hrs @ 85°C	3000 Hrs @ 105°C	3000 Hrs @ 105°C	3000 Hrs @ 85°C
Operating Temperature Range	-25°C ~ 85°C	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 85°C
Ripple Current @ 120 Hz	2.75 A	1.5 A	1.5 A	2.73 A
Ripple Current @ 50 kHz	3.9325 A	2.145 A	2.145 A	3.9039 A
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Size / Dimension	1.378" Dia (35.00 mm)	1.378" Dia (35.00 mm)	1.378" Dia (35.00 mm)	1.181" Dia (30.00 mm)
Height - Seated (Max)	1.457" (37.00 mm)	1.457" (37.00 mm)	1.457" (37.00 mm)	1.654" (42.00 mm)
Mounting Type	Through Hole	Nichicon	Through Hole	Through Hole
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All listed parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment and long-term availability. Selection between direct substitutes LGN2V561MELC35 and LQS2V561MELC35 depends on thermal environment requirements. Both parts support extended operating temperature to 105°C, providing enhanced thermal margin in applications where ambient temperature or component self-heating approaches 85°C. The trade-off is reduced ripple current capacity (1.5 A @ 120 Hz and 2.145 A @ 50 kHz compared to 2.75 A and 3.9325 A respectively for the LLS2V561MELC), which must be evaluated against circuit ripple current demands.

The LLS2V561MELB variant is suitable only when PCB layout constraints permit the reduced diameter (30.00 mm) and increased height (42.00 mm). Lead spacing remains constant at 10.00 mm, maintaining footprint compatibility. Ripple current performance of LLS2V561MELB is equivalent to the main part, supporting direct electrical substitution when physical space allows.

Frequently Asked Questions (FAQ)

Q: Can LGN2V561MELC35 and LQS2V561MELC35 be used interchangeably with LLS2V561MELC?

A: Yes, for applications where the operating temperature range of -25°C to 105°C is acceptable. Both parts are direct electrical and mechanical substitutes with identical capacitance, voltage rating, lead spacing, and case dimensions. The primary difference is enhanced thermal performance (3000 Hrs @ 105°C versus 3000 Hrs @ 85°C) and lower ripple current ratings.

Q: What is the key limitation when substituting LLS2V561MELB?

A: Physical dimensions differ. The diameter is reduced from 35.00 mm to 30.00 mm, and height increases from 37.00 mm to 42.00 mm. Lead spacing remains 10.00 mm. PCB layout must accommodate these dimensional changes before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. LLS2V561MELC, LGN2V561MELC35, LQS2V561MELC35, and LLS2V561MELB are all ROHS3 compliant.

Q: How do ripple current ratings affect substitution?

A: Ripple current capacity must meet or exceed circuit requirements. LLS2V561MELC and LLS2V561MELB support 2.75 A @ 120 Hz and approximately 3.9 A @ 50 kHz. LGN2V561MELC35 and LQS2V561MELC35 support 1.5 A @ 120 Hz and 2.145 A @ 50 kHz. Select parts based on actual circuit ripple current specifications.

Q: Can these parts be used in applications requiring temperatures above 85°C?

A: LGN2V561MELC35 and LQS2V561MELC35 support continuous operation to 105°C. LLS2V561MELC and LLS2V561MELB are rated to 85°C maximum. For applications exceeding 85°C, use LGN or LQS series variants.

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