LGU2G820MELY Equivalent & Substitute Parts

Part Overview

The LGU2G820MELY is a 82 µF, 400 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 through-hole mounting. The part is currently active in production with 956 units in stock. Equivalent and substitute parts are identified when design requirements allow for voltage rating upgrades, dimensional variations, or manufacturer alternatives while maintaining core electrical specifications.

Key Parameters

Parameter	Value
Capacitance	82 µF
Voltage Rating	400 V
Tolerance	±20%
Lifetime	3000 Hrs @ 105°C
Operating Temperature Range	-25°C ~ 105°C
Polarization	Polar
Lead Spacing	10.00 mm
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LGU2G820MELY is determined by the following criteria:

Primary Substitution Parameters:

Capacitance value: 82 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage rating: 400 V minimum (equal or higher ratings acceptable)
Operating temperature range: -25°C ~ 105°C (must meet or exceed)
Lifetime: 3000 Hrs @ 105°C (equal or greater acceptable)
Polarization: Polar (exact match required)
Lead spacing: 10.00 mm (exact match required)
Package type: Radial, Can - Snap-In (exact match required)
Mounting type: Through Hole (exact match required)

Acceptable Variations:

Voltage rating may be upgraded (400 V to 420 V)
Physical height may vary within snap-in package constraints
Manufacturer may differ if all electrical and mechanical parameters align
Ripple current specifications may exceed minimum requirements

Parameter Comparison

Parameter	LGU2G820MELY (Main)	LGNW6820MELY25 (Upgrade)	LGN2G820MELY30 (Similar)	381LR820M400H012 (Similar)
Manufacturer	Nichicon	Nichicon	Nichicon	Cornell Dubilier Electronics
Capacitance	82 µF	82 µF	82 µF	82 µF
Voltage Rating	400 V	420 V	400 V	400 V
Tolerance	±20%	±20%	±20%	±20%
Lifetime @ 105°C	3000 Hrs	3000 Hrs	3000 Hrs	3000 Hrs
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C	-25°C ~ 105°C
Lead Spacing	10.00 mm	10.00 mm	10.00 mm	10.00 mm
Can Diameter	20.00 mm	20.00 mm	20.00 mm	22.00 mm
Height (Max)	30.00 mm	27.00 mm	32.00 mm	25.00 mm
Ripple Current @ 120 Hz	640 mA	640 mA	640 mA	800 mA
Ripple Current @ High Frequency	915.2 mA @ 50 kHz	915.2 mA @ 50 kHz	915.2 mA @ 50 kHz	1.14 A @ 20 kHz
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

LGNW6820MELY25 (Upgrade Substitute): This part is suitable for direct substitution when circuit design permits voltage rating upgrade from 400 V to 420 V. The reduced height (27.00 mm vs. 30.00 mm) may provide space advantages in compact layouts. All electrical parameters, compliance certifications, and thermal ratings are equivalent or superior. Product status is active with 869 units in stock.

LGN2G820MELY30 (Similar Substitute): This part maintains identical electrical specifications and voltage rating as the main part. The increased height (32.00 mm vs. 30.00 mm) requires verification of available board space. All compliance certifications and thermal ratings are equivalent. Product status is active with 878 units in stock.

381LR820M400H012 (Similar Substitute): This Cornell Dubilier part meets all core electrical specifications with identical capacitance, tolerance, voltage, and lifetime ratings. Physical dimensions differ: can diameter is 22.00 mm (vs. 20.00 mm) and height is 25.00 mm (vs. 30.00 mm). Ripple current performance exceeds the main part specification. ESR is specified at 2.44 Ohm @ 120 Hz. All compliance certifications are met. Product status is active with 1865 units in stock. Board layout verification is required due to dimensional differences.

Frequently Asked Questions (FAQ)

Q: Can LGNW6820MELY25 replace LGU2G820MELY in any application? A: LGNW6820MELY25 is suitable for replacement when the circuit design operates at or below 400 V. The 420 V rating provides additional voltage margin. Physical height is reduced by 3 mm, which may improve space utilization. All other electrical and thermal specifications are equivalent.

Q: What is the primary difference between LGN2G820MELY30 and the main part? A: LGN2G820MELY30 differs only in physical height (32.00 mm vs. 30.00 mm). All electrical specifications, voltage rating, capacitance, tolerance, and thermal ratings are identical. Board layout must accommodate the additional 2 mm height.

Q: Is 381LR820M400H012 compatible with the original footprint? A: 381LR820M400H012 has different physical dimensions: can diameter of 22.00 mm (vs. 20.00 mm) and height of 25.00 mm (vs. 30.00 mm). PCB layout verification is required. Lead spacing remains 10.00 mm, maintaining through-hole compatibility. The part delivers superior ripple current performance.

Q: Are all substitute parts RoHS3 compliant? A: All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the main part LGU2G820MELY.

Q: Which substitute offers the best thermal performance? A: All parts share identical lifetime ratings of 3000 hours at 105°C and operating temperature ranges of -25°C to 105°C. Thermal performance is equivalent across all options.

Q: Can I use 381LR820M400H012 if board space is limited? A: 381LR820M400H012 has a smaller height (25.00 mm) compared to the main part (30.00 mm), providing 5 mm of space savings. However, the can diameter is larger (22.00 mm vs. 20.00 mm), requiring verification of radial clearance on the PCB.

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