LKSA2103MESC Equivalent & Substitute Parts

Part Overview

The LKSA2103MESC is a 10000 µF, 42 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as obsolete, making substitute parts necessary for ongoing system support and new production requirements. The original part specifications include a 1000-hour lifetime rating at 85°C and a 4.6 A ripple current capability at 120 Hz, suitable for audio applications.

Key Parameters

Parameter	Value
Capacitance	10000 µF
Voltage Rating	42 V
Tolerance	±20%
Package Type	Radial, Can - Snap-In
Lead Spacing	0.394" (10.00 mm)
Physical Diameter	1.378" (35.00 mm)
Height (Seated Max)	1.260" (32.00 mm)
Mounting Type	Through Hole
Operating Temperature Range	-40°C to 85°C
Polarization	Polar

Substitute Part Grouping Explanation

Substitution for the LKSA2103MESC is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Capacitance: 10000 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: 1.378" Dia × 1.260" Height (exact match required)
Mounting Type: Through Hole (exact match required)
Polarization: Polar (exact match required)

Allowable Substitution Parameters:

Voltage Rating: Minimum 42 V (higher voltage ratings are acceptable)
Operating Temperature Range: Minimum -40°C to 85°C (extended upper range acceptable)
Lifetime Rating: Higher values acceptable
Ripple Current: Higher values acceptable
ESR: Lower values acceptable

All four substitute parts meet these criteria with voltage ratings of 50 V, which exceeds the original 42 V requirement, and enhanced lifetime ratings ranging from 2000 to 3000 hours at elevated temperatures.

Parameter Comparison

Parameter	LKSA2103MESC (Original)	109LBB050M2ED	380LX103M050A022	381LQ103M050A022	EKMQ500VSN103MA30S
Manufacturer	Nichicon	Cornell Dubilier / Illinois Capacitor	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Chemi-Con
Capacitance	10000 µF	10000 µF	10000 µF	10000 µF	10000 µF
Tolerance	±20%	±20%	±20%	±20%	±20%
Voltage Rating	42 V	50 V	50 V	50 V	50 V
ESR @ 120 Hz	Not specified	33.16 mOhm	40 mOhm	41 mOhm	Not specified
Lifetime @ Temp.	1000 Hrs @ 85°C	3000 Hrs @ 85°C	3000 Hrs @ 85°C	2000 Hrs @ 105°C	2000 Hrs @ 105°C
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 105°C	-40°C to 105°C
Ripple Current @ 120 Hz	4.6 A	3.64 A	5 A	4 A	4 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)
Physical Diameter	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)	1.378" (35.00 mm)
Height (Seated Max)	1.260" (32.00 mm)	1.260" (32.00 mm)	1.260" (32.00 mm)	1.260" (32.00 mm)	1.260" (32.00 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
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 current manufacturing status, providing long-term supply chain stability compared to the obsolete LKSA2103MESC. Selection among the substitutes is based on compliance requirements and operational environment:

For Standard Operating Conditions (-40°C to 85°C): The 109LBB050M2ED and 380LX103M050A022 are suitable. The 380LX103M050A022 offers superior ripple current handling at 5 A @ 120 Hz and is available in bulk packaging. Both are ROHS3 compliant.

For Extended Temperature Applications (-40°C to 105°C): The 381LQ103M050A022 and EKMQ500VSN103MA30S provide extended operating range. The 381LQ103M050A022 is ROHS3 compliant with 2000-hour lifetime at 105°C. The EKMQ500VSN103MA30S from Chemi-Con offers equivalent performance with ROHS3 compliance.

For Highest Ripple Current Capacity: The 380LX103M050A022 delivers 5 A @ 120 Hz, exceeding the original specification of 4.6 A, with 3000-hour lifetime at 85°C.

All substitutes feature 50 V voltage ratings, providing 8 V margin above the original 42 V specification, enhancing system reliability.

Frequently Asked Questions (FAQ)

Q: Can I use a 50 V rated capacitor in place of the 42 V original? A: Yes. Higher voltage ratings are acceptable substitutes. The 50 V rating provides additional safety margin and does not affect circuit operation when the original design voltage is 42 V.

Q: Are all substitute parts mechanically identical to the LKSA2103MESC? A: Yes. All substitutes maintain identical physical dimensions (1.378" diameter × 1.260" height), lead spacing (0.394"), and snap-in package configuration, ensuring direct mechanical compatibility.

Q: What is the difference between the 109LBB050M2ED and 380LX103M050A022? A: Both are 10000 µF, 50 V snap-in capacitors with identical mechanical specifications. The 380LX103M050A022 offers higher ripple current (5 A vs. 3.64 A @ 120 Hz) and lower ESR (40 mOhm vs. 33.16 mOhm), with availability in bulk packaging.

Q: Should I select a substitute with extended temperature range (105°C)? A: Extended temperature range substitutes (381LQ103M050A022 and EKMQ500VSN103MA30S) are beneficial for applications operating above 85°C or requiring enhanced thermal margin. For standard applications within -40°C to 85°C, standard-range substitutes are sufficient.

Q: Are all substitutes RoHS compliant? A: Yes. All four substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What is the inventory status of these substitutes? A: All substitutes are in active production with current stock availability: 109LBB050M2ED (642 pcs), 380LX103M050A022 (1625 pcs), 381LQ103M050A022 (754 pcs), and EKMQ500VSN103MA30S (1013 pcs).

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