LKSA2153MESC Equivalent & Substitute Parts

Part Overview

The LKSA2153MESC is a 15000 µF, 42 V aluminum electrolytic capacitor manufactured by Nichicon in a radial, can snap-in package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. 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	15000 µF
Voltage Rating	42 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Physical Dimensions	1.378" Dia (35.00 mm) × 1.654" Height (42.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 85°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitute parts for the LKSA2153MESC are qualified based on the following criteria:

Capacitance Match: 15000 µF (exact match required)
Voltage Rating: Minimum 42 V (equal or higher voltage rating acceptable)
Package Compatibility: Radial, can snap-in configuration with identical lead spacing (10.00 mm) and physical dimensions (35.00 mm diameter × 42.00 mm height)
Mounting Type: Through-hole configuration
Polarization: Polar aluminum electrolytic
Temperature Range: Operating range of -40°C to 85°C or broader
Tolerance: ±20%

Both substitute parts meet these criteria. The 50 V rated alternatives provide voltage margin above the original 42 V specification while maintaining identical mechanical and electrical compatibility.

Parameter Comparison

Parameter	LKSA2153MESC (Nichicon)	159LBB050M2EF (Cornell Dubilier)	50USG15000MEFCSN35X40 (Rubycon)
Capacitance	15000 µF	15000 µF	15000 µF
Voltage Rating	42 V	50 V	50 V
Tolerance	±20%	±20%	±20%
Lead Spacing	10.00 mm	10.00 mm	10.00 mm
Diameter	35.00 mm	35.00 mm	35.00 mm
Height	42.00 mm	42.00 mm	42.00 mm
Package Type	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
Mounting Type	Through Hole	Through Hole	Through Hole
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Polarization	Polar	Polar	Polar
Lifetime @ 85°C	1000 Hrs	3000 Hrs	3000 Hrs
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

Both substitute parts are active products with extended component lifetimes compared to the obsolete LKSA2153MESC. Selection between the two alternatives depends on compliance and availability requirements:

159LBB050M2EF (Cornell Dubilier / Illinois Capacitor): This part carries RoHS3 compliance certification and provides specified ESR characteristics (22.1 mOhm @ 120 Hz). It is suitable for applications requiring documented RoHS compliance.

50USG15000MEFCSN35X40 (Rubycon): This part also carries RoHS3 compliance and provides higher ripple current ratings at both low frequency (6.44 A @ 120 Hz) and high frequency (7.406 A @ 100 kHz) compared to the Cornell Dubilier alternative. It is supplied in bulk packaging.

Both parts exceed the original 42 V rating at 50 V, providing additional voltage margin. Both maintain identical physical footprints and lead spacing, ensuring direct mechanical compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the 50 V rated substitutes be used in place of the 42 V original part?

A: Yes. A higher voltage rating is acceptable in applications designed for 42 V operation. The 50 V substitutes provide voltage margin and do not degrade circuit performance in 42 V applications.

Q: Are the physical dimensions identical between all three parts?

A: Yes. All three parts share identical lead spacing (10.00 mm), diameter (35.00 mm), and height (42.00 mm). They are mechanically interchangeable on existing PCB designs without modification.

Q: What is the difference in lifetime between the original and substitute parts?

A: The LKSA2153MESC is rated for 1000 hours at 85°C. Both substitute parts are rated for 3000 hours at 85°C, providing extended operational life in the same thermal environment.

Q: Do the substitute parts meet RoHS compliance?

A: Yes. Both 159LBB050M2EF and 50USG15000MEFCSN35X40 carry RoHS3 compliance certification.

Q: What is the difference in ripple current handling?

A: The 50USG15000MEFCSN35X40 provides higher ripple current ratings (6.44 A @ 120 Hz, 7.406 A @ 100 kHz) compared to the 159LBB050M2EF (4.83 A @ 120 Hz, 6.0375 A @ 10 kHz). Applications with high ripple current requirements should reference the specific ripple current specifications.

Q: Are both substitutes available in the same packaging format?

A: Both parts are supplied in radial, can snap-in packages. The 50USG15000MEFCSN35X40 is supplied in bulk packaging, while packaging details for the 159LBB050M2EF are not specified in the provided data.

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