LLS2G121MELY Equivalent & Substitute Parts

Part Overview

The LLS2G121MELY is a 120 µF, 400 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as Active product status and is designed for general purpose applications requiring stable capacitance performance across industrial temperature ranges. Substitute parts become necessary when the primary part number reaches end-of-life status, inventory constraints occur, or design revisions require alternative mechanical configurations while maintaining electrical compatibility.

Substiute Parts

LLS2G121MELY

NichiconIn Stock: 1062LLS2G121MELY Datasheet

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LLS2G121MELA

NichiconIn Stock: 1276LLS2G121MELA Datasheet

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LLS2G121MELZ

NichiconIn Stock: 1459LLS2G121MELZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LLS2G121MELY is determined by strict electrical and mechanical parameter matching:

Electrical Compatibility Criteria:

• Capacitance value must equal 120 µF
• Tolerance must be ±20%
• Rated voltage must be 400 V
• Lifetime specification must be 3000 Hrs @ 85°C
• Operating temperature range must be -25°C ~ 85°C
• Polarization must remain Polar

Mechanical Compatibility Criteria:

• Lead spacing must be 0.394" (10.00mm)
• Package type must be Radial, Can - Snap-In
• Mounting type must be Through Hole

Compliance Criteria:

• RoHS3 Compliant status required
• REACH Unaffected status required

All substitute parts listed (LLS2G121MELA, LLS2G121MELZ) meet these criteria. Variations in physical dimensions (diameter and height) are permissible provided lead spacing remains constant and the snap-in mounting interface is maintained.

Parameter Comparison

Engineering Selection Recommendations

All three part numbers (LLS2G121MELY, LLS2G121MELA, LLS2G121MELZ) maintain Active product status and full compliance with ROHS3 and REACH regulations. Selection between these parts is based on physical space constraints within the application:

• LLS2G121MELY: 20.00mm diameter, 35.00mm height. Select when original footprint dimensions must be preserved.
• LLS2G121MELA: 25.00mm diameter, 25.00mm height. Select when vertical space is limited and horizontal space permits larger diameter.
• LLS2G121MELZ: 22.00mm diameter, 30.00mm height. Select as intermediate option balancing diameter and height constraints.

All parts share identical electrical specifications, lead spacing, and mounting interface. PCB layout verification is required only to confirm available space for the selected physical dimensions.

Frequently Asked Questions (FAQ)

Q: Can LLS2G121MELA be used as a direct replacement for LLS2G121MELY?

A: Yes, provided PCB layout accommodates the larger 25.00mm diameter and reduced 25.00mm height. Lead spacing remains 10.00mm, and all electrical parameters are identical.

Q: What is the primary difference between these substitute parts?

A: The three parts differ only in physical dimensions (diameter and height). Electrical specifications, capacitance, voltage rating, tolerance, lifetime, and operating temperature range are identical across all three part numbers.

Q: Are there any ripple current differences between these parts?

A: Ripple current specifications vary between parts. LLS2G121MELY does not specify high-frequency ripple current. LLS2G121MELA provides 1.6159 A @ 50 kHz, and LLS2G121MELZ provides 1.5587 A @ 50 kHz. Low-frequency ripple current at 120 Hz ranges from 1.07 A to 1.13 A across all three parts.

Q: Do all substitute parts maintain the same snap-in mounting interface?

A: Yes. All three parts are classified as Radial, Can - Snap-In with Through Hole mounting type and identical 10.00mm lead spacing.

Q: Are compliance certifications identical across all three parts?

A: Yes. All three parts are ROHS3 Compliant and REACH Unaffected with Active product status.