337LMX400M2EE Equivalent & Substitute Parts Reference

Part Overview

The 337LMX400M2EE is a 330 µF, 400 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the LMX series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring stable capacitance and extended operational life. The part maintains active product status with 752 units currently in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to component availability, supply chain considerations, or design flexibility within the allowed parameter ranges.

Substiute Parts

337LMX400M2EE

Cornell Dubilier / Illinois CapacitorIn Stock: 770337LMX400M2EE Datasheet

Current PartRFQ

450VXG330MEFCSN35X35

RubyconIn Stock: 656787450VXG330MEFCSN35X35 Datasheet

UpgradeRFQ

MAL215966331E3

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 4539MAL215966331E3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 337LMX400M2EE are classified into two categories based on electrical and mechanical compatibility:

Upgrade Substitute (Higher Voltage Rating): The 450VXG330MEFCSN35X35 from Rubycon qualifies as an upgrade substitute. This part maintains identical capacitance (330 µF), tolerance (±20%), physical dimensions (1.378" diameter, 1.457" height, 10.00mm lead spacing), package type (radial, can-style snap-in), mounting method (through hole), and lifetime rating (5000 Hrs @ 105°C). The voltage rating increases from 400 V to 450 V, providing enhanced voltage margin while preserving all mechanical and thermal characteristics.

Parametric Equivalent (Same Voltage Rating): The MAL215966331E3 from Vishay Beyschlag/Draloric/BC Components functions as a parametric equivalent. This part matches the 337LMX400M2EE in capacitance (330 µF), voltage rating (400 V), tolerance (±20%), physical dimensions (1.378" diameter, 1.457" height, 10.00mm lead spacing), package type (radial, can-style snap-in), mounting method (through hole), and lifetime rating (5000 Hrs @ 105°C).

Substitution eligibility is determined by:

• Identical capacitance value (330 µF)
• Voltage rating equal to or greater than 400 V
• Matching tolerance (±20%)
• Identical package and mounting configuration
• Equivalent or superior lifetime rating (5000 Hrs @ 105°C minimum)
• Compatible operating temperature range (-25°C ~ 105°C)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalent): The MAL215966331E3 serves as a direct parametric equivalent to the 337LMX400M2EE. Both parts share identical electrical ratings (330 µF, 400 V, ±20% tolerance), physical dimensions, and thermal specifications. Selection of this substitute is appropriate when component availability or supply chain requirements necessitate an alternative source while maintaining identical circuit performance characteristics. Both parts carry ROHS3 compliance and REACH unaffected status.

For Voltage Margin Enhancement (Upgrade Substitute): The 450VXG330MEFCSN35X35 provides an upgrade path with increased voltage rating (450 V versus 400 V). This substitute maintains all mechanical and thermal specifications while offering 12.5% additional voltage headroom. This part is suitable for applications where enhanced voltage margin is beneficial or where circuit design allows for higher-rated components. The upgrade substitute also carries ROHS3 compliance and REACH unaffected status.

Compliance and Regulatory Considerations: All three parts maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current regulatory requirements. All parts are classified under ECCN EAR99 and HTSUS 8532.22.0040, indicating consistent export and tariff classification.

Frequently Asked Questions (FAQ)

Q: Can the 450VXG330MEFCSN35X35 be used as a direct replacement for the 337LMX400M2EE? A: Yes. The 450VXG330MEFCSN35X35 maintains identical capacitance (330 µF), tolerance (±20%), physical dimensions, lead spacing, package type (radial snap-in), and thermal lifetime rating (5000 Hrs @ 105°C). The higher voltage rating (450 V) provides additional voltage margin and does not compromise circuit compatibility.

Q: What is the difference between the two substitute parts? A: The MAL215966331E3 is a parametric equivalent with matching 400 V voltage rating. The 450VXG330MEFCSN35X35 is an upgrade substitute with a higher 450 V voltage rating. Both maintain identical capacitance and physical specifications.

Q: Are the physical dimensions identical across all three parts? A: Yes. All three parts share identical dimensions: 1.378" diameter (35.00mm), 1.457" maximum seated height (37.00mm), and 0.394" lead spacing (10.00mm). All use radial, can-style snap-in packaging with through-hole mounting.

Q: Do all substitute parts meet the same compliance standards? A: Yes. All three parts are ROHS3 compliant, REACH unaffected, classified as EAR99, and carry the same HTSUS code (8532.22.0040).

Q: What is the operating temperature range for all parts? A: All three parts operate across the identical temperature range of -25°C to 105°C with a lifetime rating of 5000 hours at 105°C.

Q: Can these parts be used interchangeably in PCB designs? A: Yes. The identical lead spacing (10.00mm), diameter (35.00mm), and height (37.00mm) ensure mechanical and electrical interchangeability on through-hole PCB layouts designed for radial snap-in aluminum electrolytic capacitors.