Equivalent & Substitute Parts for LLS2W121MELZ

Part Overview

The LLS2W121MELZ is a 120 µF, 450 V aluminum electrolytic capacitor manufactured by Nichicon, designed for general-purpose applications requiring radial, snap-in mounting. This component is classified as Active product status with ROHS3 compliance. Alternative equivalent parts become necessary when addressing specific application requirements such as extended operating temperature ranges, improved ripple current handling, or alternative manufacturer sourcing for supply chain optimization.

Substiute Parts

LLS2W121MELZ

NichiconIn Stock: 1098LLS2W121MELZ Datasheet

Current PartRFQ

LGW2W121MELZ35

NichiconIn Stock: 1119LGW2W121MELZ35 Datasheet

UpgradeRFQ

380LQ121M450H022

Cornell Dubilier Electronics (CDE)In Stock: 1078380LQ121M450H022 Datasheet

SimilarRFQ

ESMQ451VSN121MP30S

Chemi-ConIn Stock: 1248ESMQ451VSN121MP30S Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LLS2W121MELZ is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 120 µF
• Tolerance: ±20%
• Voltage Rating: 450 V
• Polarization: Polar
• Mounting Type: Through Hole
• Package Type: Radial, Can - Snap-In
• Lead Spacing: 0.394" (10.00mm)
• Footprint Diameter: 0.866" Dia (22.00mm)

Allowable Variation Parameters:

• Operating Temperature Range (may extend beyond -25°C ~ 85°C)
• Lifetime @ Temperature (may exceed 3000 Hrs @ 85°C)
• Height - Seated (within mechanical envelope constraints)
• Ripple Current ratings (may exceed specified values)
• ESR values (when specified)

The three substitute parts listed below meet all mandatory matching parameters and represent direct electrical and mechanical equivalents suitable for component replacement.

Parameter Comparison

Engineering Selection Recommendations

LGW2W121MELZ35 (Nichicon - Upgrade Option)

This substitute offers extended operating temperature capability to 105°C with equivalent 3000-hour lifetime rating at elevated temperature. It maintains identical electrical specifications and mechanical footprint. Selection is appropriate for applications requiring enhanced thermal performance while maintaining Nichicon series continuity and ROHS3 compliance.

380LQ121M450H022 (Cornell Dubilier Electronics - Alternative Manufacturer)

This Cornell Dubilier part provides equivalent electrical performance with specified ESR of 1.656 Ohm @ 120Hz. Height is reduced to 1.260" (32.00mm), offering potential PCB layout advantages in space-constrained designs. Lifetime rating is 2000 hours @ 85°C. ROHS3 compliance and REACH unaffected status are maintained.

ESMQ451VSN121MP30S (Chemi-Con - Compact Alternative)

This Chemi-Con substitute delivers the most compact form factor at 1.181" (30.00mm) height while maintaining all electrical equivalence parameters. Lifetime rating is 2000 hours @ 85°C. RoHS compliance is confirmed. This option is suitable for applications where vertical PCB clearance is a design constraint.

All three substitutes maintain Active product status and are suitable for direct replacement based on provided electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can LGW2W121MELZ35 be used as a direct replacement for LLS2W121MELZ?

A: Yes. Both parts share identical capacitance (120 µF), voltage rating (450 V), tolerance (±20%), lead spacing (10.00mm), and footprint diameter (22.00mm). The LGW2W121MELZ35 extends the operating temperature range to 105°C and maintains 3000-hour lifetime at elevated temperature, making it functionally equivalent with enhanced thermal capability.

Q: What is the primary difference between the three substitute options?

A: The three substitutes differ in manufacturer origin, operating temperature range, lifetime rating, and physical height. LGW2W121MELZ35 (Nichicon) offers the highest temperature rating and longest lifetime. 380LQ121M450H022 (CDE) and ESMQ451VSN121MP30S (Chemi-Con) provide reduced height options at 32.00mm and 30.00mm respectively, with 2000-hour lifetime ratings.

Q: Are there mechanical compatibility concerns when substituting with the compact alternatives?

A: The reduced height of 380LQ121M450H022 (32.00mm) and ESMQ451VSN121MP30S (30.00mm) compared to the original 35.00mm may provide additional PCB clearance. Lead spacing remains constant at 10.00mm, ensuring snap-in mounting compatibility. Verify available vertical space in your application before selection.

Q: Do all substitutes maintain regulatory compliance?

A: All four parts (original and three substitutes) are ROHS3 compliant and REACH unaffected. RoHS compliance is confirmed across all options, meeting standard regulatory requirements for electronic component sourcing.

Q: Which substitute should be selected for high-temperature applications?

A: LGW2W121MELZ35 is the appropriate selection for applications requiring sustained operation above 85°C, as it maintains rated performance to 105°C with 3000-hour lifetime at that temperature. The other two substitutes are rated to 85°C maximum.