LKX2D102MESA50 Equivalent & Substitute Parts

Part Overview

The LKX2D102MESA50 is a 1000 µF, 200 V aluminum electrolytic capacitor manufactured by Nichicon in the LKX series. This radial, can-style snap-in capacitor is designed for audio applications with a rated lifetime of 2000 hours at 105°C and an operating temperature range of -40°C to 105°C. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified when electrical characteristics (capacitance, voltage rating, tolerance, ripple current) and mechanical specifications (lead spacing, mounting type, package style) align within acceptable parameters for the application.

Key Parameters

Parameter	Value
Capacitance	1000 µF
Voltage Rating	200 V
Tolerance	±20%
Lifetime @ Temperature	2000 Hrs @ 105°C
Operating Temperature Range	-40°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)
Mounting Type	Through Hole
Package Style	Radial, Can - Snap-In
Polarization	Polar
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LKX2D102MESA50 are qualified based on the following criteria:

Electrical Equivalence: Capacitance (1000 µF), voltage rating (200 V), and tolerance (±20%) must match exactly. Ripple current specifications and lifetime ratings may vary within acceptable operational margins.

Mechanical Compatibility: Lead spacing (10.00 mm), mounting type (through hole), and package configuration (radial, can-style snap-in) must be identical to ensure direct board-level substitution without layout modifications.

Compliance & Status: All substitute parts must maintain Active product status and ROHS3 compliance to meet current regulatory and procurement requirements.

The identified substitutes are grouped as follows:

Direct Equivalent: LKX2D102MESB40 (Nichicon LKX series) — identical electrical and mechanical specifications with packaging variation
Upgrade Alternative: 381LX102M200J052 (Cornell Dubilier Electronics 381LX series) — enhanced lifetime rating (3000 Hrs @ 105°C) with matching form factor and electrical parameters

Parameter Comparison

Parameter	LKX2D102MESA50	LKX2D102MESB40	381LX102M200J052
Manufacturer	Nichicon	Nichicon	Cornell Dubilier Electronics
Capacitance	1000 µF	1000 µF	1000 µF
Voltage Rating	200 V	200 V	200 V
Tolerance	±20%	±20%	±20%
Lifetime @ 105°C	2000 Hrs	2000 Hrs	3000 Hrs
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C
Lead Spacing	0.394" (10.00 mm)	0.394" (10.00 mm)	0.394" (10.00 mm)
Size / Diameter	0.984" (25.00 mm)	1.181" (30.00 mm)	0.984" (25.00 mm)
Height - Seated (Max)	2.047" (52.00 mm)	1.654" (42.00 mm)	2.047" (52.00 mm)
Ripple Current @ 120 Hz	2.3 A	2.3 A	2.2 A
Ripple Current @ High Frequency	3.45 A @ 50 kHz	3.45 A @ 50 kHz	3.1 A @ 20 kHz
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Can - Snap-In	Radial, Can - Snap-In	Radial, Can - Snap-In
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

LKX2D102MESB40 (Nichicon): This part is a direct electrical equivalent with identical capacitance, voltage, tolerance, and ripple current specifications. The primary difference is physical form factor—increased diameter (30.00 mm vs. 25.00 mm) and reduced height (42.00 mm vs. 52.00 mm). This substitute is suitable for applications where board space permits the larger diameter footprint. Both parts maintain Active status and ROHS3 compliance.

381LX102M200J052 (Cornell Dubilier Electronics): This part offers an extended lifetime rating of 3000 hours at 105°C compared to the 2000-hour rating of the LKX2D102MESA50, while maintaining identical lead spacing, diameter, and height. Ripple current specifications are slightly lower (3.1 A @ 20 kHz vs. 3.45 A @ 50 kHz). This upgrade alternative is appropriate for applications requiring enhanced thermal endurance. The part is Active status and ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can LKX2D102MESB40 be used as a direct replacement for LKX2D102MESA50?

A: Yes, electrically and functionally. Both parts share identical capacitance (1000 µF), voltage rating (200 V), tolerance (±20%), and ripple current specifications. The LKX2D102MESB40 has a larger diameter (30.00 mm) and shorter height (42.00 mm). Board layout must accommodate the increased diameter; lead spacing remains 10.00 mm.

Q: What is the advantage of 381LX102M200J052 over the original part?

A: The 381LX102M200J052 provides a 50% longer lifetime rating (3000 Hrs @ 105°C vs. 2000 Hrs @ 105°C) while maintaining the same physical footprint and lead spacing. This is beneficial for applications with extended operational life requirements or elevated ambient temperatures.

Q: Are all three parts snap-in style capacitors?

A: Yes. All three parts—LKX2D102MESA50, LKX2D102MESB40, and 381LX102M200J052—are radial, can-style snap-in aluminum electrolytic capacitors with through-hole mounting and 10.00 mm lead spacing.

Q: Do all substitute parts meet current compliance standards?

A: Yes. All three parts are Active status products and ROHS3 compliant, meeting current regulatory requirements for electronic component procurement.

Q: What is the difference between the two Nichicon parts (LKX2D102MESA50 and LKX2D102MESB40)?

A: The primary differences are packaging designation and physical dimensions. Both are Nichicon LKX series with identical electrical specifications. The LKX2D102MESB40 has a larger can diameter (30.00 mm) and shorter height (42.00 mm), while the LKX2D102MESA50 has a smaller diameter (25.00 mm) and greater height (52.00 mm). Lead spacing and electrical performance are identical.

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