ESMM451VSN331MQ50S Equivalent & Substitute Parts

Part Overview

The ESMM451VSN331MQ50S is a 330 µF, 450 V aluminum electrolytic capacitor manufactured by Chemi-Con in the SMM series. This radial, can-style snap-in capacitor is designed for general-purpose applications requiring high voltage energy storage and filtering. The component is currently in active production status with 1269 pieces available in inventory.

Equivalent and substitute parts are identified when alternative manufacturers offer capacitors with matching or superior electrical and mechanical specifications within the same functional category. Substitution ensures design flexibility, supply chain continuity, and access to components with enhanced performance characteristics such as extended operating temperature ranges or improved reliability ratings.

Substiute Parts

ESMM451VSN331MQ50S

Chemi-ConIn Stock: 1319ESMM451VSN331MQ50S Datasheet

Current PartRFQ

450MXG330MEFCSN25X50

RubyconIn Stock: 273875450MXG330MEFCSN25X50 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ESMM451VSN331MQ50S is permissible when an alternative component meets the following mandatory criteria:

Electrical Parameters (Non-Negotiable):

• Capacitance value: 330 µF (exact match)
• Voltage rating: 450 V (minimum requirement)
• Tolerance: ±20% (exact match)
• Polarization: Polar (exact match)

Mechanical Parameters (Non-Negotiable):

• Package type: Radial, Can - Snap-In (exact match)
• Lead spacing: 10.00 mm (exact match)
• Mounting type: Through Hole (exact match)
• Height seated maximum: 52.00 mm (exact match or less)
• Diameter: Compatible with 25.40 mm or smaller

Performance Parameters (Acceptable to Exceed):

• Operating temperature range: May extend beyond -25°C ~ 85°C
• Lifetime rating: May exceed 3000 Hrs @ 85°C
• ESR (Equivalent Series Resistance): Lower values acceptable
• Ripple current ratings: Higher values acceptable

The substitute part 450MXG330MEFCSN25X50 from Rubycon satisfies all mandatory criteria and provides enhanced performance in operating temperature range and lifetime rating.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: ESMM451VSN331MQ50S (Chemi-Con SMM Series)

Selection criteria:

• Active production status with established supply chain
• RoHS Compliant certification
• REACH Unaffected status
• EAR99 export classification
• Suitable for applications with operating temperatures up to 85°C
• 1269 pieces currently in inventory

Substitute Part: 450MXG330MEFCSN25X50 (Rubycon MXG Series)

Selection criteria:

• Active production status with high inventory availability (273,782 pieces)
• ROHS3 Compliant certification (enhanced compliance standard)
• REACH Unaffected status
• EAR99 export classification
• Extended operating temperature range (-25°C ~ 105°C) suitable for thermal stress environments
• Enhanced lifetime rating at elevated temperature (3000 Hrs @ 105°C)
• Smaller physical diameter (25.00 mm vs 25.40 mm) provides additional PCB layout flexibility

Both components are suitable for direct substitution in general-purpose applications. The Rubycon substitute offers superior thermal performance characteristics and is recommended for applications requiring extended temperature operation or enhanced reliability margins.

Frequently Asked Questions (FAQ)

Q: Can the 450MXG330MEFCSN25X50 be used as a direct replacement for the ESMM451VSN331MQ50S?

A: Yes. Both components share identical electrical specifications (330 µF, 450 V, ±20% tolerance), identical mechanical package configuration (radial snap-in, 10.00 mm lead spacing, 52.00 mm height), and identical mounting method (through-hole). The Rubycon substitute is mechanically and electrically compatible for direct PCB substitution.

Q: What is the significance of the extended operating temperature range in the Rubycon part?

A: The Rubycon 450MXG330MEFCSN25X50 operates from -25°C to 105°C, compared to -25°C to 85°C for the Chemi-Con part. This 20°C extension at the upper temperature limit allows the component to function reliably in higher thermal environments and provides additional design margin for applications subject to elevated ambient or internal heat generation.

Q: Are there any physical clearance concerns when substituting the Rubycon part?

A: No. The Rubycon part has a slightly smaller diameter (25.00 mm vs 25.40 mm) and identical height (52.00 mm). This results in improved PCB layout compatibility with no risk of mechanical interference. Lead spacing and mounting footprint are identical.

Q: Do both parts meet current compliance standards?

A: Yes. The Chemi-Con ESMM451VSN331MQ50S is RoHS Compliant. The Rubycon 450MXG330MEFCSN25X50 is ROHS3 Compliant, which represents an enhanced compliance standard. Both are REACH Unaffected and classified as EAR99 for export purposes.

Q: What is the difference in ESR between the two parts?

A: The Chemi-Con part specifies ESR of 1.005 Ohm @ 120 Hz. The Rubycon part does not provide an ESR specification in the available data. For applications where ESR is a critical parameter, the Chemi-Con part should be verified against circuit requirements before substitution.

Q: Can these parts be used interchangeably in high-ripple-current applications?

A: Ripple current ratings differ between the two parts. The Chemi-Con part is rated for 2.12 A @ 120 Hz and 3.0316 A @ 100 kHz. The Rubycon part is rated for 1.82 A @ 120 Hz and 2.548 A @ 10 kHz. Application-specific ripple current requirements must be verified against the selected component's rating to ensure adequate thermal performance.