LLS2Z821MELB Equivalent & Substitute Parts

Part Overview

The LLS2Z821MELB is an 820 µF, 180 V aluminum electrolytic capacitor in a 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 energy storage in through-hole configurations. The part maintains active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent capacitance and tolerance specifications can be maintained within the same package family, allowing for circuit continuity when the primary part becomes unavailable.

Substiute Parts

LLS2Z821MELB

NichiconIn Stock: 745LLS2Z821MELB Datasheet

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LLS2D821MELB

NichiconIn Stock: 1146LLS2D821MELB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the LLS2Z821MELB is determined by strict adherence to the following electrical and mechanical parameters:

• Capacitance Value: Must be 820 µF
• Capacitance Tolerance: Must be ±20%
• Package Type: Must be Radial, Can - Snap-In
• Mounting Configuration: Must be Through Hole
• Lead Spacing: Must be 0.394" (10.00mm)
• Size / Dimension: Must be 1.181" Dia (30.00mm)
• Operating Temperature Range: Must support -40°C ~ 85°C
• Polarization: Must be Polar
• RoHS Compliance: Must be ROHS3 Compliant

The substitute part LLS2D821MELB meets all mechanical and electrical compatibility criteria. The rated voltage of 200 V on the substitute part exceeds the 180 V requirement of the main part, making it electrically compatible for direct substitution in circuits designed for 180 V operation.

Parameter Comparison

Engineering Selection Recommendations

Both the LLS2Z821MELB and LLS2D821MELB maintain active product status with full ROHS3 compliance and REACH unaffected designation. The substitute part LLS2D821MELB is suitable for direct replacement in applications where the circuit is designed for 180 V operation, as the higher 200 V rating provides additional voltage margin. The primary dimensional difference is the seated height: the substitute part measures 1.181" (30.00mm) compared to 0.984" (25.00mm) on the main part. This height difference must be evaluated against available PCB clearance and mechanical constraints in the target application. Both parts share identical lead spacing, diameter, and mounting configuration, ensuring compatibility with existing through-hole footprints.

Frequently Asked Questions (FAQ)

Q: Can LLS2D821MELB be used as a direct replacement for LLS2Z821MELB?

A: Yes, provided that the increased seated height of 1.181" (30.00mm) versus 0.984" (25.00mm) does not conflict with mechanical clearance requirements in your application. All electrical parameters, capacitance value, tolerance, lead spacing, and package type are identical.

Q: What is the significance of the voltage rating difference between 180 V and 200 V?

A: The substitute part's 200 V rating exceeds the main part's 180 V requirement. In circuits designed for 180 V operation, the higher voltage rating of the substitute provides additional safety margin and does not create compatibility issues.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the LLS2Z821MELB and LLS2D821MELB operate across the identical temperature range of -40°C to 85°C with a rated lifetime of 3000 hours at 85°C.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry EAR99 ECCN classification with HTSUS code 8532.22.0040.

Q: Are there any ripple current differences between the main and substitute parts?

A: Yes. The substitute part LLS2D821MELB has slightly higher ripple current ratings: 2.8 A @ 120 Hz and 4.2 A @ 50 kHz, compared to 2.69 A @ 120 Hz and 4.035 A @ 50 kHz on the main part. This difference reflects the higher voltage rating and does not affect substitution compatibility.