LKSA2682MESA Equivalent & Substitute Parts

Part Overview

The LKSA2682MESA is a 6800 µF, 42 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as obsolete, with 1038 units currently in stock. The part is designed for audio applications with a rated lifetime of 1000 hours at 85°C and an operating temperature range of -40°C to 85°C.

Due to the obsolete status of LKSA2682MESA, equivalent and substitute parts from active manufacturers are necessary to ensure long-term component availability and supply chain continuity. The substitute parts listed maintain the same capacitance value, tolerance, and mechanical form factor while offering improved performance characteristics and active product status.

Key Parameters

Parameter	Value
Capacitance	6800 µF
Tolerance	±20%
Voltage - Rated	42 V
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar
Lead Spacing	0.394" (10.00mm)
Size / Dimension	0.984" Dia (25.00mm)
Height - Seated (Max)	1.654" (42.00mm)
Mounting Type	Through Hole
Package / Case	Radial, Can - Snap-In

Substitute Part Grouping Explanation

Substitution of LKSA2682MESA is determined by the following critical parameters:

Capacitance Value: All substitute parts maintain 6800 µF
Tolerance: All substitute parts maintain ±20%
Voltage Rating: Substitute parts are rated at 50 V, which exceeds the original 42 V specification and provides voltage margin
Mechanical Compatibility: All substitute parts share identical lead spacing (10.00mm), diameter (25.00mm), and height (42.00mm), ensuring direct PCB mounting compatibility
Package Type: All substitute parts use radial, can snap-in configuration
Polarization: All substitute parts maintain polar configuration

The substitute parts are grouped into two categories based on manufacturer and performance characteristics:

Category 1 - Nichicon LLS Series: LLS1H682MELA offers improved lifetime (3000 hours @ 85°C) while maintaining the same mechanical footprint and operating temperature range.

Category 2 - Cornell Dubilier / Illinois Capacitor LBA/LBB Series: 688LBA050M2CF and 688LBB050M2CF provide active product status with documented ESR values and extended lifetimes (2000-3000 hours @ 85°C).

Category 3 - Chemi-Con KMQ and SMH Series: EKMQ500VSN682MQ40S, ESMH500VNN682MQ40S, and ESMH500VSN682MQ40S offer extended operating temperature ranges (up to 105°C) and documented ESR specifications, with lifetimes of 2000-3000 hours.

Parameter Comparison

Parameter	LKSA2682MESA	LLS1H682MELA	688LBA050M2CF	688LBB050M2CF	EKMQ500VSN682MQ40S	ESMH500VNN682MQ40S	ESMH500VSN682MQ40S
Manufacturer	Nichicon	Nichicon	Cornell Dubilier / Illinois Capacitor	Cornell Dubilier / Illinois Capacitor	Chemi-Con	Chemi-Con	Chemi-Con
Series	LKS	LLS	LBA	LBB	KMQ	SMH	SMH
Capacitance	6800 µF	6800 µF	6800 µF	6800 µF	6800 µF	6800 µF	6800 µF
Tolerance	±20%	±20%	±20%	±20%	±20%	±20%	±20%
Voltage - Rated	42 V	50 V	50 V	50 V	50 V	50 V	50 V
ESR @ 120 Hz	—	—	85.33 mOhm	48.76 mOhm	—	49 mOhm	49 mOhm
Lifetime @ Temp.	1000 Hrs @ 85°C	3000 Hrs @ 85°C	2000 Hrs @ 85°C	3000 Hrs @ 85°C	2000 Hrs @ 105°C	2000 Hrs @ 85°C	2000 Hrs @ 85°C
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 85°C
Ripple Current @ 120 Hz	2.9 A	3.87 A	3.87 A	3.81 A	2.94 A	3.81 A	3.81 A
Lead Spacing	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)	0.394" (10.00mm)
Size / Dimension	0.984" Dia (25.00mm)	0.984" Dia (25.00mm)	0.984" Dia (25.00mm)	0.984" Dia (25.00mm)	1.000" Dia (25.40mm)	1.000" Dia (25.40mm)	1.000" Dia (25.40mm)
Height - Seated (Max)	1.654" (42.00mm)	1.654" (42.00mm)	1.654" (42.00mm)	1.654" (42.00mm)	1.654" (42.00mm)	1.654" (42.00mm)	1.654" (42.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Enhanced Reliability: LLS1H682MELA is the primary substitute, offering Nichicon manufacturing continuity with tripled lifetime rating (3000 hours @ 85°C) and active product status. This part maintains identical mechanical dimensions and operating temperature range.

For Extended Operating Temperature Applications: EKMQ500VSN682MQ40S extends the upper operating temperature to 105°C, suitable for applications requiring thermal margin beyond standard 85°C specifications. This part maintains active product status and ROHS3 compliance.

For Lowest ESR Performance: 688LBB050M2CF provides the lowest documented ESR at 48.76 mOhm @ 120 Hz with 3000-hour lifetime at 85°C, supporting applications requiring minimal impedance characteristics. This part is ROHS3 compliant and actively manufactured.

For General Purpose Substitution: ESMH500VNN682MQ40S and ESMH500VSN682MQ40S offer documented ESR specifications (49 mOhm @ 120 Hz) with active product status and ROHS3 compliance. Both parts support equivalent ripple current handling and are suitable for audio and general purpose applications.

All substitute parts exceed the original 42 V rating with 50 V specifications, providing voltage safety margin. All substitute parts maintain through-hole mounting compatibility with identical lead spacing and snap-in package configuration.

Frequently Asked Questions (FAQ)

Q: Can LKSA2682MESA be directly replaced with any of the listed substitute parts?

A: Yes. All substitute parts maintain identical capacitance (6800 µF), tolerance (±20%), lead spacing (10.00mm), height (42.00mm), and radial snap-in package configuration. The substitute parts are rated at 50 V, which exceeds the original 42 V specification and is electrically compatible with circuits designed for 42 V operation.

Q: What is the primary difference between the substitute parts?

A: The substitute parts differ in manufacturer, lifetime rating, ESR characteristics, and operating temperature range. Nichicon LLS1H682MELA offers the longest lifetime (3000 hours @ 85°C). Cornell Dubilier 688LBB050M2CF provides the lowest ESR (48.76 mOhm @ 120 Hz). Chemi-Con EKMQ500VSN682MQ40S extends operating temperature to 105°C.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are ROHS3 compliant. The original LKSA2682MESA does not specify RoHS status.

Q: Do the substitute parts have different physical dimensions?

A: Nichicon LLS1H682MELA maintains identical dimensions (0.984" diameter, 42.00mm height). Chemi-Con KMQ and SMH series parts have a slightly larger diameter (1.000" or 25.40mm) but maintain the same height (42.00mm) and lead spacing (10.00mm). This minor diameter increase does not affect snap-in mounting compatibility.

Q: Which substitute part is recommended for audio applications?

A: LLS1H682MELA is recommended for audio applications, maintaining Nichicon manufacturing heritage with improved lifetime characteristics and active product status.

Q: What is the voltage derating consideration when using 50 V rated substitutes in a 42 V circuit?

A: The 50 V rated substitute parts provide 8 V margin above the 42 V circuit specification. This margin improves reliability and extends component lifetime in the specified application.

Q: Are ESR specifications available for all substitute parts?

A: ESR specifications are provided for Cornell Dubilier 688LBA050M2CF (85.33 mOhm @ 120 Hz), 688LBB050M2CF (48.76 mOhm @ 120 Hz), and Chemi-Con SMH series parts (49 mOhm @ 120 Hz). Nichicon LLS1H682MELA and Chemi-Con EKMQ500VSN682MQ40S do not specify ESR values in the provided data.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message