EKMS501VSN331MA45S Equivalent & Substitute Parts

Part Overview

The EKMS501VSN331MA45S is a 330 µF, 500 V aluminum electrolytic capacitor manufactured by Chemi-Con in the KMS series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high voltage energy storage and filtering. The component features a 3000-hour lifetime rating at 105°C and operates across a temperature range of -25°C to 105°C. As an active product with ROHS3 compliance, equivalent substitute parts may be required due to inventory availability, supply chain considerations, or application-specific performance requirements within the specified electrical and mechanical parameters.

Substiute Parts

EKMS501VSN331MA45S

Chemi-ConIn Stock: 1261EKMS501VSN331MA45S Datasheet

Current PartRFQ

LGN2H331MELC45

NichiconIn Stock: 273923LGN2H331MELC45 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EKMS501VSN331MA45S is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 500 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime: 3000 Hrs @ 105°C (exact match required)
• Operating Temperature: -25°C ~ 105°C (exact match required)
• Polarization: Polar (exact match required)

Mechanical Parameters:

• Package Type: Radial, Can - Snap-In (exact match required)
• Mounting Type: Through Hole (exact match required)
• Lead Spacing: 0.394" (10.00mm) (exact match required)
• Diameter: 1.378" (35.00mm) (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (exact match required)

The substitute part LGN2H331MELC45 manufactured by Nichicon meets all critical electrical, mechanical, and compliance requirements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The LGN2H331MELC45 (Nichicon LGN series) is a direct equivalent substitute for the EKMS501VSN331MA45S (Chemi-Con KMS series) based on the following engineering criteria:

Electrical Equivalence: Both capacitors share identical electrical specifications: 330 µF capacitance, 500 V rated voltage, ±20% tolerance, and 3000-hour lifetime at 105°C. Operating temperature ranges are identical at -25°C to 105°C.

Mechanical Compatibility: Both components feature identical package configurations (Radial, Can - Snap-In), through-hole mounting, and lead spacing of 0.394" (10.00mm). The diameter specification of 1.378" (35.00mm) is identical. The seated height difference of 0.020" (0.50mm) between the two parts (EKMS501VSN331MA45S at 1.870" versus LGN2H331MELC45 at 1.850") remains within typical PCB design tolerances for snap-in capacitor installations.

Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH Unaffected status, and identical ECCN (EAR99) and HTSUS (8532.22.0040) classifications, ensuring equivalent regulatory standing for procurement and deployment.

Product Status: Both components are active products with current manufacturing support and availability.

Frequently Asked Questions (FAQ)

Q: Can the LGN2H331MELC45 be used as a direct replacement for the EKMS501VSN331MA45S in existing designs?

A: Yes. The LGN2H331MELC45 meets all critical electrical and mechanical specifications required for direct substitution. Both capacitors share identical capacitance (330 µF), voltage rating (500 V), tolerance (±20%), lifetime (3000 Hrs @ 105°C), operating temperature range (-25°C ~ 105°C), package type (Radial, Can - Snap-In), lead spacing (0.394" / 10.00mm), and diameter (1.378" / 35.00mm). The 0.020" (0.50mm) difference in seated height is within standard PCB design tolerances for snap-in installations.

Q: Are there any ripple current differences between these two parts?

A: Ripple current specifications differ between the two manufacturers. The EKMS501VSN331MA45S specifies 1.6 A @ 120 Hz and 2.288 A @ 50 kHz. The LGN2H331MELC45 specifies 1.25 A @ 120 Hz and 1.7875 A @ 50 kHz. These differences do not affect substitution eligibility, as ripple current is not a determining parameter for mechanical or electrical equivalence in this product category. Application-specific ripple current requirements must be evaluated independently.

Q: Do both parts have the same RoHS and REACH compliance status?

A: Yes. Both the EKMS501VSN331MA45S and LGN2H331MELC45 are ROHS3 Compliant and REACH Unaffected. Both share identical ECCN (EAR99) and HTSUS (8532.22.0040) classifications.

Q: What is the significance of the snap-in package type for substitution?

A: The snap-in package type is a critical mechanical parameter. Both parts feature identical Radial, Can - Snap-In configurations with matching lead spacing (0.394" / 10.00mm) and diameter (1.378" / 35.00mm). This ensures mechanical compatibility with existing PCB snap-in receptacles and mounting hardware.

Q: Are there any temperature or lifetime considerations that affect substitution?

A: No. Both capacitors share identical operating temperature ranges (-25°C ~ 105°C) and lifetime ratings (3000 Hrs @ 105°C). Substitution does not introduce any thermal or longevity trade-offs.

Q: What inventory status should be considered when selecting between these parts?

A: The EKMS501VSN331MA45S (Chemi-Con) has 1220 pieces in stock. The LGN2H331MELC45 (Nichicon) has 273882 pieces in stock. Both are active products with current availability.