LGUW6820MELZ Equivalent & Substitute Parts

Part Overview

The LGUW6820MELZ is a 82 µF, 420 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is rated for 3000 hours at 105°C and is designed for general purpose applications requiring high voltage energy storage and filtering. The part is currently active in production with 934 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when design specifications allow for compatible alternatives.

Substiute Parts

LGUW6820MELZ

NichiconIn Stock: 995LGUW6820MELZ Datasheet

Current PartRFQ

LGNW6820MELY25

NichiconIn Stock: 956LGNW6820MELY25 Datasheet

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LGU2W820MELA

NichiconIn Stock: 1077LGU2W820MELA Datasheet

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LGU2W820MELZ

NichiconIn Stock: 1135LGU2W820MELZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LGUW6820MELZ is determined by the following critical parameters:

• Capacitance Value: Must be 82 µF (±20% tolerance acceptable)
• Voltage Rating: Must be equal to or greater than 420 V
• Package Type: Must be Radial, Can - Snap-In with Through Hole mounting
• Lead Spacing: Must be 0.394" (10.00 mm) to ensure PCB compatibility
• Thermal Characteristics: Must support 3000 hours minimum at 105°C
• Ripple Current Capability: Must meet or exceed 640 mA @ 120 Hz and 915.2 mA @ 50 kHz
• Compliance: Must maintain ROHS3 compliance and REACH unaffected status

Substitute parts are grouped into two categories:

Category 1 - Direct Equivalents (Same Voltage Rating)

• LGNW6820MELY25: Identical electrical specifications with different physical dimensions (0.787" diameter, 1.063" height)

Category 2 - Higher Voltage Rated Alternatives (450 V Rating)

• LGU2W820MELA and LGU2W820MELZ: Both rated at 450 V, providing voltage margin above the 420 V requirement while maintaining identical capacitance, tolerance, and thermal performance

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the primary part LGUW6820MELZ.

LGNW6820MELY25 is a direct electrical equivalent with identical 420 V rating. Physical dimensions differ (smaller diameter at 0.787" versus 0.866", but taller at 1.063" versus 0.984"). This part is suitable for applications where the reduced radial footprint is acceptable and vertical space permits the increased height. Lead spacing remains identical at 0.394" (10.00 mm), ensuring PCB compatibility.

LGU2W820MELA and LGU2W820MELZ both operate at 450 V, providing 30 V margin above the 420 V requirement. These parts are suitable for applications where higher voltage rating provides design margin or where 420 V rated stock is unavailable. LGU2W820MELA has a larger diameter (0.984" versus 0.866") with identical height (0.984"). LGU2W820MELZ maintains the same diameter as the primary part (0.866") but with increased height (1.181" versus 0.984"). Both maintain identical electrical performance in capacitance, tolerance, ripple current, and thermal characteristics.

Selection between substitutes depends on PCB layout constraints and available space for radial and axial dimensions.

Frequently Asked Questions (FAQ)

Q: Can LGNW6820MELY25 be used as a direct replacement for LGUW6820MELZ?

A: Yes, LGNW6820MELY25 is electrically equivalent with identical capacitance (82 µF), voltage rating (420 V), tolerance (±20%), and thermal performance (3000 Hrs @ 105°C). Both use the same lead spacing (0.394" / 10.00 mm) and snap-in package. Physical dimensions differ: LGNW6820MELY25 is smaller in diameter (0.787" versus 0.866") but taller (1.063" versus 0.984"). Verify PCB layout accommodates these dimensional changes before substitution.

Q: What is the advantage of using LGU2W820MELA or LGU2W820MELZ over the primary part?

A: Both 450 V rated alternatives provide 30 V margin above the 420 V requirement, offering additional voltage headroom in the circuit design. Electrical performance remains identical: 82 µF capacitance, ±20% tolerance, 640 mA ripple current @ 120 Hz, and 915.2 mA @ 50 kHz. These parts are suitable when higher voltage rating is desired or when 420 V stock availability is limited.

Q: Are all substitute parts compatible with the same PCB footprint?

A: All substitute parts maintain identical lead spacing (0.394" / 10.00 mm), ensuring PCB hole pattern compatibility. However, radial and axial dimensions vary. LGNW6820MELY25 has a smaller diameter but greater height. LGU2W820MELA has a larger diameter with the same height as the primary part. LGU2W820MELZ maintains the same diameter but with increased height. Verify available space in the enclosure or on the PCB before selecting a substitute.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of LGUW6820MELZ. All parts are manufactured by Nichicon and maintain active product status.

Q: What is the difference between the LGU and LGN series?

A: Both series are Nichicon aluminum electrolytic capacitors with identical electrical specifications for the 82 µF, 420 V rating. The primary difference is physical packaging: LGU series (LGUW6820MELZ) and LGN series (LGNW6820MELY25) use different can dimensions while maintaining the same lead spacing and snap-in mounting type. Series selection depends on available PCB space.