LLS2W101MELZ Equivalent & Substitute Parts

Part Overview

The LLS2W101MELZ is a 100 µF, 450 V aluminum electrolytic capacitor manufactured by Nichicon in the LLS series. This radial, can-style snap-in capacitor is designed for general purpose applications with a rated lifetime of 3000 hours at 85°C and an operating temperature range of -25°C to 85°C. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified when electrical parameters (capacitance, voltage rating, tolerance, ripple current) and mechanical specifications (lead spacing, package type, mounting configuration) align within acceptable tolerances for the application.

Key Parameters

Parameter	Value
Capacitance	100 µF
Voltage - Rated	450 V
Tolerance	±20%
Lead Spacing	0.394" (10.00 mm)
Package / Case	Radial, Can - Snap-In
Mounting Type	Through Hole
Operating Temperature	-25°C ~ 85°C
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the LLS2W101MELZ is determined by strict equivalence in the following parameters: capacitance value (100 µF), rated voltage (450 V), tolerance (±20%), lead spacing (10.00 mm), package type (Radial, Can - Snap-In), and mounting configuration (Through Hole). Substitute parts must maintain these electrical and mechanical specifications to ensure direct compatibility in the circuit board layout and electrical performance.

Variations in lifetime rating, operating temperature range, ripple current specifications, and physical dimensions (diameter and height) are permitted when the core electrical and lead-spacing parameters remain constant. These variations reflect different series designations or manufacturer alternatives while preserving functional equivalence.

Parameter Comparison

Parameter	LLS2W101MELZ	LGW2W101MELZ30	LLS2W101MELA	LLS2W101MELY	ESMQ451VSN101MP25S
Manufacturer	Nichicon	Nichicon	Nichicon	Nichicon	Chemi-Con
Series	LLS	LGW	LLS	LLS	SMQ
Capacitance	100 µF	100 µF	100 µF	100 µF	100 µF
Voltage - Rated	450 V	450 V	450 V	450 V	450 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature	-25°C ~ 85°C	-25°C ~ 105°C	-25°C ~ 85°C	-25°C ~ 85°C	-25°C ~ 85°C
Lifetime @ Temp.	3000 Hrs @ 85°C	3000 Hrs @ 105°C	3000 Hrs @ 85°C	3000 Hrs @ 85°C	2000 Hrs @ 85°C
Ripple Current @ 120 Hz	950 mA	1.04 A	970 mA	880 mA	930 mA
Ripple Current @ 50 kHz	1.3585 A	1.4872 A	1.3871 A	1.2584 A	1.33 A
Size / Dimension (Diameter)	0.866" (22.00 mm)	0.866" (22.00 mm)	0.984" (25.00 mm)	0.787" (20.00 mm)	0.866" (22.00 mm)
Height - Seated (Max)	1.181" (30.00 mm)	1.181" (30.00 mm)	0.984" (25.00 mm)	1.378" (35.00 mm)	0.984" (25.00 mm)
Product Status	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and comply with environmental regulations. The LGW2W101MELZ30 offers an extended operating temperature range to 105°C and maintains 3000-hour lifetime rating, making it suitable for applications requiring higher thermal performance. The LLS2W101MELA and LLS2W101MELY remain within the same Nichicon LLS series with identical electrical specifications but differ in physical dimensions; selection depends on available board space. The ESMQ451VSN101MP25S from Chemi-Con provides equivalent electrical performance with RoHS compliance but specifies a 2000-hour lifetime at 85°C, which is lower than the Nichicon alternatives.

All parts are ROHS compliant and REACH unaffected, meeting current regulatory requirements for general purpose applications.

Frequently Asked Questions (FAQ)

Q: Can LLS2W101MELY be used as a direct replacement for LLS2W101MELZ?

A: Yes, LLS2W101MELY is electrically equivalent with identical capacitance (100 µF), voltage rating (450 V), tolerance (±20%), and lead spacing (10.00 mm). The primary difference is physical dimension: LLS2W101MELY has a smaller diameter (0.787" vs 0.866") but greater height (1.378" vs 1.181"). Verify available board space before substitution.

Q: What is the advantage of LGW2W101MELZ30 over LLS2W101MELZ?

A: LGW2W101MELZ30 extends the operating temperature range to 105°C and maintains the same 3000-hour lifetime rating at this higher temperature. All other electrical and mechanical parameters remain equivalent. This part is suitable for applications requiring higher thermal performance.

Q: Is ESMQ451VSN101MP25S from Chemi-Con a suitable substitute?

A: ESMQ451VSN101MP25S maintains electrical equivalence in capacitance, voltage, tolerance, and lead spacing. However, it specifies a 2000-hour lifetime at 85°C compared to 3000 hours for Nichicon alternatives. This part is suitable for applications where the lower lifetime rating is acceptable.

Q: Do all substitute parts use the same snap-in mounting configuration?

A: Yes, all listed parts use Radial, Can - Snap-In package type with Through Hole mounting and 10.00 mm lead spacing, ensuring compatibility with existing board layouts designed for LLS2W101MELZ.

Q: Are there physical dimension constraints when selecting a substitute?

A: Yes. LLS2W101MELA has a larger diameter (0.984" vs 0.866") and shorter height (0.984" vs 1.181"). LLS2W101MELY has a smaller diameter (0.787") but greater height (1.378"). Verify available board space and clearance requirements before substitution.

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