Equivalent & Substitute Parts for LLS2Z681MELZ

Part Overview

The LLS2Z681MELZ is a 680 µF, 180 V aluminum electrolytic capacitor in radial, can snap-in configuration manufactured by Nichicon. This component is designed for general-purpose applications requiring stable capacitance performance across extended operating temperatures. The part maintains active product status with 1144 units currently in stock. Substitute parts are identified when equivalent electrical and mechanical specifications align within the allowed parameter tolerances for this capacitor category, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

LLS2Z681MELZ

NichiconIn Stock: 1212LLS2Z681MELZ Datasheet

Current PartRFQ

LLS2D681MELZ

NichiconIn Stock: 4239LLS2D681MELZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LLS2Z681MELZ is determined by strict alignment of the following critical parameters:

• Capacitance Value: 680 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Series: LLS (Nichicon LLS series)
• Package Configuration: Radial, Can - Snap-In (mechanical compatibility)
• Mounting Type: Through Hole (PCB interface compatibility)
• Lead Spacing: 0.394" (10.00mm) (footprint compatibility)
• Polarization: Polar (electrical polarity requirement)
• Operating Temperature Range: -40°C ~ 85°C (thermal envelope)
• Lifetime Rating: 3000 Hrs @ 85°C (reliability specification)
• Compliance: ROHS3 Compliant (regulatory requirement)

The LLS2D681MELZ qualifies as a substitute part because it maintains identical values for all critical parameters listed above. The rated voltage differs (200 V versus 180 V), which represents an uprating that does not compromise circuit compatibility. Higher voltage ratings provide equivalent or superior performance in applications designed for the lower voltage specification.

Parameter Comparison

Engineering Selection Recommendations

Both the LLS2Z681MELZ and LLS2D681MELZ maintain active product status with full ROHS3 compliance and REACH unaffected designation. Selection between these parts is determined by circuit voltage requirements and available board space.

The LLS2Z681MELZ operates at 180 V rated voltage and occupies a maximum seated height of 1.378" (35.00mm). This configuration is appropriate for applications with voltage specifications at or below 180 V.

The LLS2D681MELZ operates at 200 V rated voltage with a maximum seated height of 1.575" (40.00mm). The higher voltage rating provides margin in circuits designed for 180 V operation. The increased height requires verification of available vertical clearance on the PCB assembly.

Both parts share identical capacitance, tolerance, ripple current ratings, lead spacing, and thermal specifications. The choice between them depends on voltage headroom requirements and mechanical space constraints within the assembly.

Frequently Asked Questions (FAQ)

Q: Can LLS2D681MELZ replace LLS2Z681MELZ in a 180 V circuit?

A: Yes. The LLS2D681MELZ is rated for 200 V, which exceeds the 180 V circuit requirement. Higher voltage ratings do not create compatibility issues in lower voltage applications.

Q: Are the physical dimensions compatible for PCB mounting?

A: Lead spacing and radial diameter are identical (0.394" lead spacing, 0.866" diameter). The seated height differs by 0.197" (5.00mm), with LLS2D681MELZ requiring additional vertical clearance. Verify available board space before substitution.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both LLS2Z681MELZ and LLS2D681MELZ are ROHS3 compliant and REACH unaffected, meeting identical regulatory standards.

Q: Are the electrical performance characteristics identical?

A: Capacitance (680 µF), tolerance (±20%), ripple current ratings (2.48 A @ 120 Hz, 3.72 A @ 50 kHz), operating temperature range (-40°C ~ 85°C), and lifetime rating (3000 Hrs @ 85°C) are identical across both parts.

Q: What is the primary difference between these parts?

A: The rated voltage differs (180 V versus 200 V) and the maximum seated height differs (1.378" versus 1.575"). All other electrical and mechanical specifications are equivalent.