LKSA2392MESA Equivalent & Substitute Parts

Part Overview

The LKSA2392MESA is a 3900 µF, 42 V aluminum electrolytic capacitor in radial, can snap-in package manufactured by Nichicon. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part was designed for audio applications with a rated lifetime of 1000 hours at 85°C and operates across the temperature range of -40°C to 85°C.

Substiute Parts

LKSA2392MESA

NichiconIn Stock: 983LKSA2392MESA Datasheet

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380LX392M050J012

Cornell Dubilier Electronics (CDE)In Stock: 875380LX392M050J012 Datasheet

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381LQ392M050J012

Cornell Dubilier Electronics (CDE)In Stock: 1163381LQ392M050J012 Datasheet

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381LX392M050J012

Cornell Dubilier Electronics (CDE)In Stock: 915381LX392M050J012 Datasheet

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50MXG3900MEFCSN25X25

RubyconIn Stock: 117050MXG3900MEFCSN25X25 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LKSA2392MESA is based on the following criteria:

Mandatory Matching Parameters:

• Capacitance: 3900 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: 0.984" Dia (25.00 mm) × 1.063" Height (27.00 mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Polarization: Polar (exact match required)

Allowable Parameter Variations:

• Voltage Rating: Substitute parts rated at 50 V are acceptable (higher voltage rating provides margin above the 42 V requirement)
• Operating Temperature Range: Substitute parts with extended upper temperature limits (-40°C to 105°C) are acceptable
• Lifetime @ Temperature: Substitute parts with extended lifetime ratings are acceptable
• ESR and Ripple Current: Variations are acceptable provided the substitute meets the application requirements

All four substitute parts meet these criteria and maintain mechanical and electrical compatibility with the original LKSA2392MESA.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are active products with current manufacturing status, providing long-term availability and supply chain stability compared to the obsolete LKSA2392MESA.

Cornell Dubilier Electronics (CDE) Options:

• 380LX392M050J012: Maintains the 85°C upper operating temperature of the original part while providing extended lifetime (3000 hours at 85°C). Suitable for direct replacement in applications where thermal performance matches the original design envelope.
• 381LQ392M050J012: Extends operating temperature to 105°C with 2000-hour lifetime at that temperature. Appropriate for designs requiring enhanced thermal margin.
• 381LX392M050J012: Provides the highest thermal performance among CDE options with 3000-hour lifetime at 105°C and lowest ESR (65 mOhm). Recommended for applications requiring maximum reliability and thermal headroom.

Rubycon Option:

• 50MXG3900MEFCSN25X25: Offers 3000-hour lifetime at 105°C with extended operating temperature range. Provides alternative sourcing from a different manufacturer while maintaining equivalent electrical and mechanical specifications.

All substitute parts carry ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. Selection among the four options should be based on specific application thermal requirements and preferred supplier relationships.

Frequently Asked Questions (FAQ)

Q: Can I use a 50 V rated capacitor in place of the 42 V original part? A: Yes. A higher voltage rating provides additional safety margin and is electrically compatible. The 50 V substitute parts are suitable for applications originally designed for 42 V operation.

Q: Are the physical dimensions identical across all substitute parts? A: Yes. All substitute parts maintain the same snap-in can package with 0.984" diameter, 1.063" height, and 0.394" lead spacing, ensuring direct mechanical compatibility with the original PCB layout.

Q: What is the difference between the three CDE options? A: The primary differences are operating temperature range and lifetime ratings. The 380LX maintains 85°C operation like the original. The 381LQ and 381LX extend to 105°C, with 381LX offering the lowest ESR (65 mOhm) and longest lifetime (3000 hours at 105°C).

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

Q: Can I mix different substitute part numbers in the same design? A: Yes. All substitute parts are electrically and mechanically equivalent and can be used interchangeably. However, maintaining a single part number per design is recommended for supply chain consistency.

Q: What is the significance of the different ESR values? A: ESR (Equivalent Series Resistance) affects ripple current handling and heat generation. Lower ESR values (such as 65 mOhm in the 381LX392M050J012) indicate better high-frequency performance and lower power dissipation.

Q: Is the Rubycon part equivalent to the CDE parts? A: Yes. The 50MXG3900MEFCSN25X25 meets all mandatory electrical and mechanical parameters and is fully equivalent. It provides alternative sourcing from a different manufacturer.