Equivalent & Substitute Parts for LLS2D821MELB

Part Overview

The Nichicon LLS2D821MELB is a 820 µF, 200 V aluminum electrolytic capacitor in a radial, can snap-in package rated for 3000 hours at 85°C. This component is classified as Active and fully compliant with RoHS3 and REACH regulations. Equivalent and substitute parts are identified based on matching electrical specifications (capacitance, voltage rating, tolerance) and mechanical compatibility (package type, lead spacing, mounting configuration). Alternative models may be required due to inventory availability, thermal performance requirements, or ripple current specifications for specific application demands.

Key Parameters

Parameter	Value
Manufacturer Part Number	LLS2D821MELB
Manufacturer	Nichicon
Series	LLS
Capacitance	820 µF
Tolerance	±20%
Voltage - Rated	200 V
Package / Case	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00 mm)
Size / Dimension	1.181" Dia (30.00 mm)
Height - Seated (Max)	1.181" (30.00 mm)
Lifetime @ Temp.	3000 Hrs @ 85°C
Operating Temperature	-40°C ~ 85°C
Ripple Current @ 120 Hz	2.8 A
Ripple Current @ 50 kHz	4.2 A
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Electrical Equivalence: Capacitance (820 µF), voltage rating (200 V), and tolerance (±20%) must match exactly
Mechanical Compatibility: Package type (Radial, Can - Snap-In), lead spacing (10.00 mm), and through-hole mounting must be identical
Thermal Performance: Operating temperature range and lifetime rating at specified temperature determine suitability for thermal environments
Ripple Current Capability: Low-frequency (120 Hz) and high-frequency (50 kHz) ripple current ratings determine performance under AC stress conditions

Substitute parts are grouped into two categories:

Direct Substitutes maintain identical physical dimensions (1.181" diameter, 1.181" height) and thermal ratings (3000 Hrs @ 105°C), offering enhanced temperature performance.

Similar Substitutes share core electrical specifications but differ in physical dimensions, thermal ratings, or ripple current performance, requiring application-specific validation.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Tolerance	Diameter (mm)	Height (mm)	Lead Spacing (mm)	Lifetime @ Temp.	Operating Temp. Range	Ripple @ 120 Hz (A)	Ripple @ 50 kHz (A)	RoHS3
LLS2D821MELB	Nichicon	LLS	820 µF	200 V	±20%	30.00	30.00	10.00	3000 Hrs @ 85°C	-40°C ~ 85°C	2.8	4.2	Yes
LGU2D821MELB	Nichicon	LGU	820 µF	200 V	±20%	30.00	30.00	10.00	3000 Hrs @ 105°C	-40°C ~ 105°C	2.04	3.06	Yes
LGW2D821MELB30	Nichicon	LGW	820 µF	200 V	±20%	30.00	30.00	10.00	3000 Hrs @ 105°C	-40°C ~ 105°C	3.48	5.22	Yes
LLS2D821MELA	Nichicon	LLS	820 µF	200 V	±20%	25.00	35.00	10.00	3000 Hrs @ 85°C	-40°C ~ 85°C	2.79	4.185	Yes
380LX821M200A012	Cornell Dubilier Electronics (CDE)	380LX	820 µF	200 V	±20%	35.00	27.00	10.00	3000 Hrs @ 85°C	-40°C ~ 85°C	2.9	—	Yes
LPX821M200E5P3	Cornell Dubilier Electronics (CDE)	LPX	820 µF	200 V	±20%	30.00	35.00	10.00	1000 Hrs @ 85°C	-40°C ~ 85°C	2.7	2.97	Yes
SLPX821M200C7P3	Cornell Dubilier Electronics (CDE)	SLPX	820 µF	200 V	±20%	25.00	40.00	10.00	3000 Hrs @ 85°C	-40°C ~ 85°C	2.79	4.1	Yes

Engineering Selection Recommendations

Direct Substitutes (Preferred for Pin-Compatible Replacement)

LGU2D821MELB and LGW2D821MELB30 are direct mechanical and electrical equivalents with identical package dimensions (30.00 mm diameter, 30.00 mm height) and lead spacing. Both are Nichicon products with Active status and RoHS3 compliance. LGW2D821MELB30 offers superior ripple current performance (3.48 A @ 120 Hz, 5.22 A @ 50 kHz) compared to the main part, making it suitable for high-ripple-current applications. LGU2D821MELB provides enhanced thermal performance (3000 Hrs @ 105°C) with reduced ripple current ratings (2.04 A @ 120 Hz, 3.06 A @ 50 kHz), appropriate for thermally demanding environments.

Similar Substitutes (Application-Dependent Selection)

LLS2D821MELA maintains identical electrical specifications and thermal rating (3000 Hrs @ 85°C) but differs in physical dimensions (25.00 mm diameter, 35.00 mm height). This part is suitable only if PCB layout accommodates the different form factor.

380LX821M200A012 (Cornell Dubilier Electronics) is a CDE equivalent with 3000 Hrs @ 85°C lifetime and Active status. Physical dimensions differ significantly (35.00 mm diameter, 27.00 mm height). High-frequency ripple current data is not provided. Selection requires verification of PCB space availability and ripple current requirements.

LPX821M200E5P3 (Cornell Dubilier Electronics) has reduced thermal lifetime (1000 Hrs @ 85°C) and lower ripple current performance (2.7 A @ 120 Hz, 2.97 A @ 50 kHz). This part is suitable only for applications with minimal ripple current stress and shorter service life requirements.

SLPX821M200C7P3 (Cornell Dubilier Electronics) maintains 3000 Hrs @ 85°C lifetime but has different physical dimensions (25.00 mm diameter, 40.00 mm height) and reduced high-frequency ripple current (4.1 A @ 20 kHz instead of 50 kHz). Selection requires PCB layout validation and frequency-specific ripple current assessment.

All substitute parts are RoHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the main part.

Frequently Asked Questions (FAQ)

Q: Can LGU2D821MELB or LGW2D821MELB30 be used as direct replacements for LLS2D821MELB?

A: Yes. Both parts are direct mechanical and electrical equivalents with identical package dimensions (30.00 mm diameter, 30.00 mm height) and lead spacing (10.00 mm). They share the same capacitance (820 µF), voltage rating (200 V), tolerance (±20%), and mounting type (through-hole, radial snap-in). Both are Nichicon products with Active status and RoHS3 compliance. LGW2D821MELB30 offers higher ripple current capability; LGU2D821MELB offers extended temperature operation to 105°C.

Q: What is the difference between direct and similar substitutes?

A: Direct substitutes maintain identical physical dimensions and can be installed without PCB modification. Similar substitutes share electrical specifications but differ in physical dimensions, thermal ratings, or ripple current performance. Similar substitutes require application-specific validation and may require PCB layout changes.

Q: Why do some substitute parts have different physical dimensions?

A: Physical dimensions vary across manufacturers and product series due to design optimization for specific performance characteristics. LLS2D821MELA, SLPX821M200C7P3, and 380LX821M200A012 have different diameter and height specifications while maintaining the same lead spacing (10.00 mm) and electrical ratings. PCB layout must accommodate these dimensional differences.

Q: How do ripple current ratings affect part selection?

A: Ripple current rating determines the maximum AC current the capacitor can handle without exceeding temperature limits. LGW2D821MELB30 has the highest ripple current performance (3.48 A @ 120 Hz, 5.22 A @ 50 kHz), suitable for high-stress applications. LPX821M200E5P3 has the lowest ratings (2.7 A @ 120 Hz, 2.97 A @ 50 kHz), appropriate only for low-ripple applications. Application ripple current must not exceed the capacitor's rated value.

Q: What does "3000 Hrs @ 85°C" mean?

A: This specifies the capacitor's expected operational lifetime under continuous operation at 85°C ambient temperature. LLS2D821MELB and most similar substitutes are rated for 3000 hours at this temperature. LPX821M200E5P3 has a reduced rating of 1000 hours at 85°C. Higher temperature ratings (105°C for LGU2D821MELB and LGW2D821MELB30) extend operational life in thermally demanding environments.

Q: Are all substitute parts RoHS3 and REACH compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and REACH unaffected, matching the regulatory status of LLS2D821MELB. All parts are suitable for applications requiring environmental compliance.

Q: Can Cornell Dubilier Electronics (CDE) parts replace Nichicon parts?

A: Yes, provided electrical and mechanical specifications match. CDE parts 380LX821M200A012, LPX821M200E5P3, and SLPX821M200C7P3 are electrically equivalent (820 µF, 200 V, ±20%) but differ in physical dimensions and thermal performance. Selection requires validation of PCB layout compatibility and application ripple current requirements.

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