LKS1K182MESA Equivalent & Substitute Parts

Part Overview

The LKS1K182MESA is a 1800 µF, 80 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part is designed for audio applications with a rated lifetime of 1000 hours at 85°C and operates across a temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Capacitance	1800 µF
Voltage Rating	80 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Mounting Type	Through Hole
Lead Spacing	0.394" (10.00 mm)
Case Diameter	0.984" (25.00 mm)
Height	1.063" (27.00 mm)
Operating Temperature Range	-40°C to 85°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the LKS1K182MESA is determined by strict equivalence in the following parameters:

Capacitance: 1800 µF (exact match required)
Voltage Rating: 80 V minimum (equal or higher voltage rating acceptable)
Tolerance: ±20% (matching tolerance specification)
Package Type: Radial, Can - Snap-In (identical mechanical form factor)
Lead Spacing: 0.394" (10.00 mm) (exact match for PCB compatibility)
Case Diameter: 0.984" (25.00 mm) (exact match for mechanical fit)
Height: 1.063" (27.00 mm) (exact match for clearance requirements)
Mounting Type: Through Hole (identical connection method)
Polarization: Polar (identical electrical characteristic)

The substitute parts listed below meet all these criteria. Variations in lifetime rating, ripple current specifications, and operating temperature upper limits do not affect functional substitution when the core electrical and mechanical parameters are matched.

Parameter Comparison

Parameter	LKS1K182MESA	LLS1K182MELA	80MXG1800MEFCSN25X25	100MXG1800MEFCSN25X25	B41231B0188M000
Manufacturer	Nichicon	Nichicon	Rubycon	Rubycon	EPCOS - TDK Electronics
Series	LKS	LLS	MXG	MXG	B41231
Capacitance	1800 µF	1800 µF	1800 µF	1800 µF	1800 µF
Voltage Rating	80 V	80 V	80 V	100 V	80 V
Tolerance	±20%	±20%	±20%	±20%	±20%
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Case Diameter	0.984" (25.00 mm)	0.984" (25.00 mm)	0.984" (25.00 mm)	0.984" (25.00 mm)	1.000" (25.40 mm)
Height	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)	1.063" (27.00 mm)
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 105°C	-40°C to 105°C	-40°C to 85°C
Lifetime @ Temperature	1000 Hrs @ 85°C	3000 Hrs @ 85°C	3000 Hrs @ 105°C	3000 Hrs @ 105°C	2000 Hrs @ 85°C
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are functionally equivalent to the LKS1K182MESA based on matching electrical and mechanical specifications. Selection among the active alternatives should be based on the following factors:

LLS1K182MELA (Nichicon): Maintains manufacturer continuity with the original part. Offers improved lifetime rating (3000 hours at 85°C versus 1000 hours) and is ROHS3 compliant. Recommended for designs requiring manufacturer consistency and enhanced reliability.

80MXG1800MEFCSN25X25 (Rubycon): Provides equivalent 80 V rating with extended operating temperature range (-40°C to 105°C) and 3000-hour lifetime at 105°C. ROHS3 compliant. Suitable for applications requiring higher temperature margin.

100MXG1800MEFCSN25X25 (Rubycon): Offers elevated voltage rating (100 V) with the same capacitance and mechanical form factor. Provides additional voltage margin for circuit protection. Extended operating temperature range and 3000-hour lifetime at 105°C. ROHS3 compliant. Applicable when higher voltage headroom is beneficial.

B41231B0188M000 (EPCOS - TDK Electronics): Provides equivalent 80 V rating with 2000-hour lifetime at 85°C. ROHS3 compliant. Case diameter is 1.000" (25.40 mm), which is 0.016" larger than the original specification. Verify PCB layout clearance before selection.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher voltage rating (100 V) in place of the 80 V original?

A: Yes. The 100MXG1800MEFCSN25X25 with 100 V rating is a valid substitute. Higher voltage ratings provide additional safety margin and do not negatively affect circuit operation when the capacitance and tolerance remain identical.

Q: Are all substitute parts mechanically compatible with the original PCB layout?

A: Four of the five substitutes (LLS1K182MELA, 80MXG1800MEFCSN25X25, 100MXG1800MEFCSN25X25) have identical case diameter of 0.984" (25.00 mm). The B41231B0188M000 has a case diameter of 1.000" (25.40 mm). Verify PCB hole spacing and clearance requirements before using the EPCOS part.

Q: What is the significance of the lifetime rating difference between parts?

A: Lifetime rating indicates the expected operational duration at the specified temperature. The original LKS1K182MESA is rated for 1000 hours at 85°C. Substitute parts with higher lifetime ratings (2000 or 3000 hours) provide extended service life under the same thermal conditions. This does not affect immediate substitution compatibility but may influence long-term reliability expectations.

Q: Are all substitute parts RoHS compliant?

A: Yes. All active substitute parts listed are ROHS3 compliant. The original LKS1K182MESA RoHS status was not specified in the provided data.

Q: Can I substitute the LKS1K182MESA with a part having a different operating temperature range?

A: Yes, provided the substitute part's operating temperature range encompasses the application requirements. The original part operates from -40°C to 85°C. Substitutes with extended ranges (such as -40°C to 105°C) are fully compatible and provide additional thermal margin.

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