LLS2Z122MELB Equivalent & Substitute Parts

Part Overview

The LLS2Z122MELB is a 1200 µF, 180 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is rated for 3000 hours at 85°C and is designed for general-purpose applications requiring high capacitance and voltage ratings. The part is currently active in production with ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design optimization, or application-specific voltage margin requirements.

Substiute Parts

LLS2Z122MELB

NichiconIn Stock: 1196LLS2Z122MELB Datasheet

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LLS2D122MELB

NichiconIn Stock: 811LLS2D122MELB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the LLS2Z122MELB is determined by strict adherence to the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Capacitance value: 1200 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage rating: Equal to or greater than 180 V
• Lifetime rating: 3000 Hrs @ 85°C (exact match required)
• Operating temperature range: -40°C ~ 85°C (exact match required)
• Polarization: Polar (exact match required)

Mechanical Compatibility Criteria:

• Package type: Radial, Can - Snap-In (exact match required)
• Mounting type: Through Hole (exact match required)
• Lead spacing: 0.394" (10.00mm) (exact match required)
• Physical dimensions: 1.181" Dia (30.00mm) and 1.378" (35.00mm) height (exact match required)

Compliance Criteria:

• RoHS Status: ROHS3 Compliant (exact match required)

The LLS2D122MELB qualifies as a direct substitute because it maintains identical capacitance, tolerance, lifetime, operating temperature, polarization, package configuration, and mechanical dimensions while providing an elevated voltage rating of 200 V, which exceeds the 180 V requirement of the original part.

Parameter Comparison

Engineering Selection Recommendations

The LLS2D122MELB is a direct electrical and mechanical substitute for the LLS2Z122MELB. Both components are manufactured by Nichicon, maintain active production status, and carry ROHS3 compliance certification. The substitute part provides identical capacitance, tolerance, lifetime rating, operating temperature range, and mechanical configuration. The voltage rating increase from 180 V to 200 V represents a design margin enhancement without introducing any compatibility issues. Both parts are suitable for general-purpose applications requiring 1200 µF capacitance in through-hole snap-in configurations.

Frequently Asked Questions (FAQ)

Q: Can the LLS2D122MELB replace the LLS2Z122MELB in existing designs?

A: Yes. The LLS2D122MELB is mechanically and electrically compatible. It maintains identical capacitance (1200 µF), tolerance (±20%), lifetime (3000 Hrs @ 85°C), operating temperature range (-40°C ~ 85°C), and physical dimensions. The higher voltage rating (200 V vs. 180 V) does not create compatibility issues and provides additional voltage margin.

Q: Are there any physical differences between these parts?

A: No. Both parts share identical lead spacing (0.394" / 10.00mm), diameter (1.181" / 30.00mm), and maximum seated height (1.378" / 35.00mm). Both use radial, can snap-in packages with through-hole mounting.

Q: What is the difference in ripple current ratings?

A: The LLS2D122MELB exhibits slightly higher ripple current capability: 3.61 A @ 120 Hz (vs. 4.65 A) and 5.415 A @ 50 kHz (vs. 5.325 A). This represents a minor performance enhancement.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LLS2Z122MELB and LLS2D122MELB are ROHS3 compliant and carry identical REACH and ECCN classifications.

Q: Is the voltage rating increase a concern for circuit design?

A: No. A higher voltage rating does not negatively affect circuit performance. The 200 V rating of the substitute part is suitable for any application designed for 180 V operation.