Equivalent & Substitute Parts for LLS2G181MELZ

Part Overview

The LLS2G181MELZ is a 180 µF, 400 V aluminum electrolytic capacitor manufactured by Nichicon in the LLS series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring stable capacitance and extended operational life. With an active product status and ROHS3 compliance, the LLS2G181MELZ serves as a primary component in power supply circuits, filtering applications, and energy storage systems operating at 400 V.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific application parameters that permit interchangeability within defined electrical and mechanical tolerances.

Substiute Parts

LLS2G181MELZ

NichiconIn Stock: 929LLS2G181MELZ Datasheet

Current PartRFQ

LLS2G181MELA

NichiconIn Stock: 1123LLS2G181MELA Datasheet

SimilarRFQ

LLS2G181MELB

NichiconIn Stock: 1836LLS2G181MELB Datasheet

SimilarRFQ

ESMQ401VSN181MP35S

Chemi-ConIn Stock: 2299ESMQ401VSN181MP35S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LLS2G181MELZ is determined by strict adherence to the following parameters:

Primary Substitution Criteria:

• Capacitance: 180 µF (exact match required)
• Voltage Rating: 400 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (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)

Secondary Compatibility Parameters:

• Operating Temperature Range: -25°C ~ 85°C (minimum requirement)
• Ripple Current Ratings: Must meet or exceed application requirements
• Physical Dimensions: Variations permitted within mechanical envelope constraints
• Lifetime @ Temperature: Minimum 2000 Hrs @ 85°C acceptable for general-purpose applications

All identified substitute parts meet the primary substitution criteria. Variations in physical dimensions (diameter and height) and ripple current specifications are within acceptable ranges for through-hole snap-in capacitor applications.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and meet regulatory compliance requirements for general-purpose applications. Selection among equivalent parts should be based on the following considerations:

Nichicon LLS Series (LLS2G181MELA, LLS2G181MELB): These parts share identical electrical specifications with the main part, including 3000 Hrs @ 85°C lifetime rating and ROHS3 compliance. Physical dimension variations accommodate different PCB layout constraints while maintaining identical lead spacing and mounting compatibility. Ripple current ratings are equivalent or superior to the main part.

Chemi-Con SMQ Series (ESMQ401VSN181MP35S): This part meets all primary substitution criteria with identical capacitance, voltage, tolerance, and lead spacing. The lifetime rating of 2000 Hrs @ 85°C is lower than the main part and Nichicon alternatives. RoHS compliance is confirmed. This part is suitable for applications where the reduced lifetime specification does not conflict with system requirements.

Selection priority should reflect application-specific requirements for operational lifetime, physical envelope constraints, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can LLS2G181MELA be used as a direct replacement for LLS2G181MELZ?

A: Yes. Both parts share identical electrical specifications: 180 µF capacitance, 400 V rating, ±20% tolerance, 3000 Hrs @ 85°C lifetime, and identical lead spacing of 0.394" (10.00 mm). Physical dimensions differ (diameter and height), requiring verification that the alternative form factor fits within the available PCB space.

Q: What is the difference between LLS2G181MELB and LLS2G181MELZ?

A: Both parts are Nichicon LLS series capacitors with identical electrical ratings. LLS2G181MELB has a larger diameter (1.181" vs. 0.866") and reduced height (0.984" vs. 1.575"), resulting in a different physical footprint. Electrical performance, including ripple current and lifetime specifications, is equivalent or superior.

Q: Is ESMQ401VSN181MP35S compatible with LLS2G181MELZ?

A: Yes, for applications where the reduced lifetime specification is acceptable. ESMQ401VSN181MP35S meets all primary electrical and mechanical substitution criteria. The key difference is the lifetime rating of 2000 Hrs @ 85°C compared to 3000 Hrs @ 85°C for the main part. This part is suitable for general-purpose applications not requiring extended operational life at elevated temperature.

Q: Do all substitute parts have the same lead spacing?

A: Yes. All identified substitute parts maintain 0.394" (10.00 mm) lead spacing, ensuring PCB footprint compatibility. Physical dimensions (diameter and height) vary among alternatives.

Q: Are all substitute parts RoHS compliant?

A: Yes. LLS2G181MELA and LLS2G181MELB are ROHS3 compliant. ESMQ401VSN181MP35S is RoHS compliant. All parts meet regulatory requirements for restricted substance elimination.

Q: Which substitute part has the highest ripple current rating?

A: LLS2G181MELB provides the highest ripple current ratings: 1.52 A @ 120 Hz and 2.1736 A @ 50 kHz. This part is suitable for applications requiring superior ripple current handling capacity.