LLS2E821MELC Equivalent & Substitute Parts

Part Overview

The LLS2E821MELC is a 820 µF, 250 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as Active product status and is designed for general purpose applications requiring high capacitance at elevated voltage ratings. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 3000 hours at 85°C. Equivalent and substitute parts are identified when electrical specifications (capacitance, voltage rating, tolerance) and mechanical compatibility (package type, lead spacing, mounting configuration) align with application requirements.

Key Parameters

Parameter	Value
Capacitance	820 µF
Voltage Rating	250 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C ~ 85°C
Lifetime @ Temperature	3000 Hrs @ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LLS2E821MELC is determined by the following mandatory parameters:

Electrical Equivalence: Capacitance value (820 µF), voltage rating (250 V), and tolerance (±20%) must match exactly. These parameters define the functional electrical behavior in the circuit.

Mechanical Compatibility: Package type (Radial, Can - Snap-In), lead spacing (10.00 mm), and mounting type (Through Hole) must be identical to ensure physical fit on the PCB without redesign.

Compliance & Certification: RoHS3 compliance and REACH unaffected status are maintained across all substitute parts to ensure regulatory alignment.

Performance Considerations: Lifetime rating and operating temperature range may vary between substitutes. The LLS2E821MELC operates at 3000 hours @ 85°C with a maximum temperature of 85°C. Substitute parts with extended temperature ratings or improved lifetime characteristics represent upgrades but remain functionally compatible.

Parameter Comparison

Parameter	LLS2E821MELC (Main)	LGW2E821MELC30 (Upgrade)	LLS2E821MELA (Similar)	380LQ821M250K022 (Similar)
Manufacturer	Nichicon	Nichicon	Nichicon	Cornell Dubilier Electronics
Series	LLS	LGW	LLS	380LQ
Capacitance	820 µF	820 µF	820 µF	820 µF
Voltage Rating	250 V	250 V	250 V	250 V
Tolerance	±20%	±20%	±20%	±20%
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Lead Spacing	10.00 mm	10.00 mm	10.00 mm	10.00 mm
Size / Diameter	35.00 mm	35.00 mm	25.00 mm	30.00 mm
Height - Seated (Max)	30.00 mm	30.00 mm	45.00 mm	32.00 mm
Operating Temperature	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 85°C
Lifetime @ Temperature	3000 Hrs @ 85°C	3000 Hrs @ 105°C	3000 Hrs @ 85°C	2000 Hrs @ 85°C
Ripple Current @ 120 Hz	2.96 A	3.0 A	3.01 A	2.77 A
ESR @ 120 Hz	Not specified	Not specified	Not specified	243 mOhm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

LGW2E821MELC30 (Upgrade Substitute): This part maintains identical electrical specifications (820 µF, 250 V, ±20%) and mechanical compatibility (35.00 mm diameter, 30.00 mm height, 10.00 mm lead spacing) with the main part. The LGW2E821MELC30 offers an extended operating temperature range (-40°C to 105°C) and maintains 3000-hour lifetime at the elevated temperature of 105°C, compared to the LLS2E821MELC's 85°C maximum. Both parts are ROHS3 compliant and Active status. This substitute is suitable for applications requiring improved thermal performance without PCB redesign.

LLS2E821MELA (Similar Substitute): This Nichicon part shares identical electrical specifications and lead spacing (10.00 mm) with the main part. However, the physical dimensions differ: 25.00 mm diameter and 45.00 mm height versus the main part's 35.00 mm diameter and 30.00 mm height. This substitute requires PCB layout verification to confirm space availability. Both parts maintain 3000-hour lifetime at 85°C and are ROHS3 compliant with Active status.

380LQ821M250K022 (Similar Substitute): This Cornell Dubilier Electronics part provides identical electrical specifications (820 µF, 250 V, ±20%) and lead spacing (10.00 mm). Physical dimensions are 30.00 mm diameter and 32.00 mm height. The lifetime rating is 2000 hours at 85°C, which is lower than the main part's 3000-hour rating. ESR is specified at 243 mOhm @ 120 Hz. This part is ROHS3 compliant and Active status. Selection of this substitute should account for the reduced lifetime specification.

All substitute parts maintain ROHS3 compliance and Active product status, ensuring regulatory alignment and continued availability.

Frequently Asked Questions (FAQ)

Q: Can LGW2E821MELC30 be used as a direct replacement for LLS2E821MELC?

A: Yes. Both parts have identical capacitance (820 µF), voltage rating (250 V), tolerance (±20%), package type (Radial, Can - Snap-In), lead spacing (10.00 mm), and physical dimensions (35.00 mm diameter, 30.00 mm height). The LGW2E821MELC30 is an upgrade with extended temperature range (-40°C to 105°C) and improved lifetime at elevated temperature (3000 Hrs @ 105°C). No PCB redesign is required.

Q: What is the difference between LLS2E821MELA and LLS2E821MELC?

A: Both parts are from Nichicon's LLS series with identical electrical specifications (820 µF, 250 V, ±20%) and lead spacing (10.00 mm). The primary difference is physical size: LLS2E821MELA has a 25.00 mm diameter and 45.00 mm height, while LLS2E821MELC has a 35.00 mm diameter and 30.00 mm height. PCB layout must be verified before substitution to ensure the taller, narrower package fits the available space.

Q: Why does 380LQ821M250K022 have a lower lifetime rating?

A: The 380LQ821M250K022 from Cornell Dubilier Electronics is rated for 2000 hours at 85°C, compared to the LLS2E821MELC's 3000-hour rating at the same temperature. This reflects different design and manufacturing approaches between manufacturers. The part remains electrically and mechanically compatible but should be selected only when the reduced lifetime is acceptable for the application.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (LGW2E821MELC30, LLS2E821MELA, and 380LQ821M250K022) are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment with the main part LLS2E821MELC.

Q: What is the significance of lead spacing in substitution?

A: Lead spacing (10.00 mm for all listed parts) determines the distance between the two radial leads on the PCB. All substitute parts maintain this 10.00 mm spacing, ensuring compatibility with existing PCB footprints without modification. Changes to lead spacing would require PCB redesign.

Q: Can I substitute based on capacitance and voltage alone?

A: No. While capacitance (820 µF) and voltage rating (250 V) are critical electrical parameters, mechanical compatibility must also be verified. Package type, lead spacing, and physical dimensions (diameter and height) must match or be confirmed to fit the PCB layout. Substitution requires alignment of both electrical and mechanical specifications.

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