LKSA2472MESZ Equivalent & Substitute Parts

Part Overview

The Nichicon LKSA2472MESZ is a 4700 µF, 42 V aluminum electrolytic capacitor in radial, can snap-in package designed for audio applications. This part operates across -40°C to 85°C with a rated lifetime of 1000 hours at 85°C. The product is obsolete, making equivalent substitutes necessary for ongoing system support and new designs requiring compatible performance characteristics.

Key Parameters

Parameter	Value
Capacitance	4700 µF
Voltage Rating	42 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Physical Dimensions	0.866" Dia (22.00 mm) × 1.457" Height (37.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C ~ 85°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the LKSA2472MESZ is determined by the following criteria:

Mandatory Matching Parameters:

Capacitance: 4700 µF (exact match required)
Tolerance: ±20% (exact match required)
Package Type: Radial, Can - Snap-In (exact match required)
Lead Spacing: 0.394" (10.00 mm) (exact match required)
Physical Dimensions: 0.866" Dia (22.00 mm) × 1.457" Height (37.00 mm) (exact match required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

Allowable Parameter Variations:

Voltage Rating: Minimum 42 V (higher ratings acceptable for backward compatibility)
Operating Temperature Range: Minimum -40°C to 85°C (extended upper temperature limits acceptable)
Lifetime @ Temperature: Higher values acceptable (improved reliability)
ESR: Lower values acceptable (improved performance)
Ripple Current: Higher values acceptable (improved current handling)

All four substitute parts meet these criteria with voltage ratings of 50 V (exceeding the 42 V requirement) and identical mechanical specifications.

Parameter Comparison

Parameter	LKSA2472MESZ (Main)	380LQ472M050H032	380LX472M050H032	381LQ472M050H032	478LBB050M2BE
Manufacturer	Nichicon	Cornell Dubilier Electronics	Cornell Dubilier Electronics	Cornell Dubilier Electronics	Cornell Dubilier / Illinois Capacitor
Capacitance	4700 µF	4700 µF	4700 µF	4700 µF	4700 µF
Voltage Rating	42 V	50 V	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%	±20%	±20%
ESR @ 120 Hz	Not specified	106 mOhm	110 mOhm	88 mOhm	70.55 mOhm
Lifetime @ Temp.	1000 Hrs @ 85°C	2000 Hrs @ 85°C	3000 Hrs @ 85°C	2000 Hrs @ 105°C	3000 Hrs @ 85°C
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 85°C
Ripple Current @ 120 Hz	2.5 A	3.03 A	3.0 A	2.5 A	2.72 A
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)
Size / Dimension	0.866" Dia (22.00 mm)	0.866" Dia (22.00 mm)	0.866" Dia (22.00 mm)	0.866" Dia (22.00 mm)	0.866" Dia (22.00 mm)
Height - Seated (Max)	1.457" (37.00 mm)	1.457" (37.00 mm)	1.457" (37.00 mm)	1.457" (37.00 mm)	1.457" (37.00 mm)
Package / Case	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
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All four substitute parts are active products with ROHS3 compliance, providing long-term availability and regulatory alignment. Selection among substitutes depends on application-specific requirements:

380LQ472M050H032 provides a direct performance upgrade with 2000-hour lifetime at 85°C and 106 mOhm ESR, suitable for general-purpose applications requiring moderate reliability enhancement over the obsolete original part.

380LX472M050H032 offers the highest lifetime rating at 3000 hours at 85°C with 110 mOhm ESR and maximum inventory availability (9948 units), making it the preferred choice for high-volume production requiring extended component life.

381LQ472M050H032 extends the operating temperature range to 105°C with 2000-hour lifetime at that elevated temperature and the lowest ESR at 88 mOhm, suitable for applications requiring higher temperature operation or improved ripple current performance.

478LBB050M2BE delivers the lowest ESR at 70.55 mOhm with 3000-hour lifetime at 85°C, optimizing for applications sensitive to equivalent series resistance or requiring superior high-frequency ripple current handling.

Frequently Asked Questions (FAQ)

Q: Can I use a 50 V rated substitute in place of the 42 V original? A: Yes. The 50 V rating exceeds the 42 V requirement, providing voltage margin. All substitute parts maintain identical capacitance, tolerance, and mechanical specifications.

Q: Are the physical dimensions identical across all parts? A: Yes. All substitute parts share the same 0.866" diameter, 1.457" height, 10.00 mm lead spacing, and radial snap-in package configuration, ensuring direct mechanical compatibility.

Q: What is the significance of ESR differences among substitutes? A: ESR (Equivalent Series Resistance) affects ripple current handling and heat generation. Lower ESR values (478LBB050M2BE at 70.55 mOhm) provide improved performance in high-ripple-current applications. The original part's ESR was not specified.

Q: Which substitute offers the best long-term reliability? A: 380LX472M050H032 and 478LBB050M2BE both provide 3000-hour lifetimes at 85°C. 381LQ472M050H032 extends to 2000 hours at 105°C for elevated-temperature applications.

Q: Are all substitutes RoHS compliant? A: Yes. All four substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements. The original LKSA2472MESZ compliance status was not specified.

Q: Can these parts be used interchangeably on the same PCB? A: Yes. Identical lead spacing (10.00 mm), package type (radial snap-in), and mounting configuration (through-hole) ensure direct PCB compatibility without layout modifications.

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