LLS2G121MELA Equivalent & Substitute Parts

Part Overview

The LLS2G121MELA is a 120 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This through-hole 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, making it suitable for modern electronic equipment. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and extended component availability across different thermal and mechanical specifications.

Substiute Parts

LLS2G121MELA

NichiconIn Stock: 1276LLS2G121MELA Datasheet

Current PartRFQ

LGU2G121MELA

NichiconIn Stock: 9695LGU2G121MELA Datasheet

DirectRFQ

LLS2G121MELZ

NichiconIn Stock: 1459LLS2G121MELZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LLS2G121MELA is determined by strict equivalence in the following critical parameters:

• Capacitance Value: 120 µF (exact match required)
• Rated Voltage: 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)

Substitute parts are grouped into two categories:

Direct Manufacturer Equivalent (LGU2G121MELA): Identical electrical specifications and mechanical footprint with enhanced thermal performance (105°C operating temperature vs. 85°C). Same lead spacing and package dimensions ensure direct PCB compatibility.

Similar Manufacturer Part (LLS2G121MELZ): Identical electrical specifications and series designation with dimensional variation in physical size (0.866" diameter, 1.181" height vs. 0.984" diameter, 0.984" height). Same lead spacing maintains PCB footprint compatibility despite different can dimensions.

Parameter Comparison

Engineering Selection Recommendations

LGU2G121MELA (Direct Manufacturer Equivalent): Select this substitute when thermal performance requirements exceed the standard 85°C specification. The extended operating temperature range to 105°C and identical physical dimensions ensure drop-in compatibility with no PCB layout modifications. All compliance certifications (ROHS3, REACH Unaffected, EAR99) match the main part. This option provides superior thermal margin for high-ambient or high-dissipation applications.

LLS2G121MELZ (Similar Manufacturer Part): Select this substitute when physical space constraints permit dimensional variation. The reduced diameter (0.866" vs. 0.984") accommodates tighter board layouts, while the increased height (1.181" vs. 0.984") remains within typical component clearance envelopes. Lead spacing remains identical, ensuring PCB footprint compatibility. Thermal specifications match the main part. All compliance certifications are equivalent.

Both substitutes maintain identical electrical performance (120 µF, 400 V, ±20% tolerance) and are manufactured by Nichicon with Active product status and full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can LGU2G121MELA replace LLS2G121MELA without PCB modifications?

A: Yes. The LGU2G121MELA is a direct physical and electrical equivalent with identical lead spacing (0.394" / 10.00 mm) and package dimensions (0.984" diameter, 0.984" height). No PCB layout changes are required. The only difference is enhanced thermal performance (105°C vs. 85°C operating temperature).

Q: What are the mechanical differences between LLS2G121MELZ and LLS2G121MELA?

A: The LLS2G121MELZ has a smaller diameter (0.866" vs. 0.984") and greater height (1.181" vs. 0.984"). Lead spacing remains identical at 0.394" (10.00 mm), so PCB hole patterns are compatible. Physical clearance around the component must be verified for the increased height.

Q: Are all three parts ROHS3 compliant?

A: Yes. LLS2G121MELA, LGU2G121MELA, and LLS2G121MELZ are all ROHS3 compliant with REACH Unaffected status and EAR99 ECCN classification.

Q: Which substitute should I use for high-temperature applications?

A: LGU2G121MELA is rated for continuous operation to 105°C, compared to 85°C for both LLS2G121MELA and LLS2G121MELZ. Select LGU2G121MELA when ambient temperature or component dissipation requires extended thermal performance.

Q: Do the ripple current ratings differ between substitutes?

A: Yes. Ripple current specifications vary: LLS2G121MELA (1.13 A @ 120 Hz, 1.6159 A @ 50 kHz), LGU2G121MELA (750 mA @ 120 Hz, 1.0725 A @ 50 kHz), and LLS2G121MELZ (1.09 A @ 120 Hz, 1.5587 A @ 50 kHz). Verify ripple current requirements for your application before substitution.

Q: Is the lead spacing identical for all three parts?

A: Yes. All three parts have identical lead spacing of 0.394" (10.00 mm), ensuring PCB footprint compatibility regardless of which part is selected.