ESMM401VSN331MA30S Equivalent & Substitute Parts

Part Overview

The ESMM401VSN331MA30S is a 330 µF, 400 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 with a rated lifetime of 3000 hours at 85°C and an operating temperature range of -25°C to 85°C. The part is currently active in production and RoHS compliant.

Substitute parts are necessary when the original manufacturer part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design requirements permit operation within the specified electrical and mechanical parameter ranges of equivalent components.

Substiute Parts

ESMM401VSN331MA30S

Chemi-ConIn Stock: 1028ESMM401VSN331MA30S Datasheet

Current PartRFQ

381LR331M400A022

Cornell Dubilier Electronics (CDE)In Stock: 600219381LR331M400A022 Datasheet

DirectRFQ

B43501C9337M000

EPCOS - TDK ElectronicsIn Stock: 4397B43501C9337M000 Datasheet

DirectRFQ

LLS2G331MELC

NichiconIn Stock: 1530LLS2G331MELC Datasheet

DirectRFQ

B43254C9337M000

EPCOS - TDK ElectronicsIn Stock: 1196B43254C9337M000 Datasheet

UpgradeRFQ

B43634C5337M000

EPCOS - TDK ElectronicsIn Stock: 1436B43634C5337M000 Datasheet

UpgradeRFQ

LQSW6331MELC30

NichiconIn Stock: 274056LQSW6331MELC30 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ESMM401VSN331MA30S is determined by strict equivalence in the following critical parameters:

Mandatory Equivalence Parameters:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 400 V minimum (equal or higher voltage rating is acceptable)
• Tolerance: ±20% (standard tolerance match)
• Package Type: Radial, Can - Snap-In (physical and electrical interface compatibility)
• Lead Spacing: 10.00 mm (PCB footprint compatibility)
• Case Diameter: 35.00 mm (mechanical fit requirement)
• Mounting Type: Through Hole (assembly process compatibility)
• Polarization: Polar (electrical polarity requirement)

Acceptable Variation Parameters:

• ESR: Variations permitted within manufacturer specifications
• Lifetime @ Temperature: Equal or greater lifetime acceptable
• Operating Temperature Range: Equal or extended range acceptable
• Height - Seated: Minor variations acceptable if within mechanical envelope constraints

The following substitute parts meet these criteria and are grouped by their relationship to the main part specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent - Same Voltage Rating (400 V):

381LR331M400A022 (Cornell Dubilier Electronics) is a direct equivalent with identical voltage rating and capacitance. This part features lower ESR (402 mOhm @ 120Hz compared to 1.005 Ohm) and extended operating temperature range to 105°C. Product status is Active. This part is suitable for direct substitution in applications where the original ESMM401VSN331MA30S is unavailable.

LLS2G331MELC (Nichicon) is a direct equivalent with identical voltage rating and capacitance. This part maintains the same operating temperature range (-25°C to 85°C) and lifetime specification (3000 Hrs @ 85°C). Height is 30.00 mm (2 mm shorter than the main part). Product status is Active. This part is suitable for direct substitution where mechanical height constraints permit the reduced dimension.

Upgraded Voltage Rating (420 V and 450 V):

LQSW6331MELC30 (Nichicon) features a 420 V voltage rating, which exceeds the 400 V requirement of the main part. This part offers extended operating temperature range to 105°C and improved lifetime at elevated temperature (3000 Hrs @ 105°C). Product status is Active. This part is suitable for applications where higher voltage margin is beneficial.

B43634C5337M000 (EPCOS - TDK Electronics) features a 450 V voltage rating, which exceeds the 400 V requirement of the main part. This part offers extended lifetime (8000 Hrs @ 85°C) and lower ESR (340 mOhm @ 100Hz). Product status is Active. This part is suitable for applications where higher voltage margin and extended operational life are required.

Not Recommended for New Designs:

B43501C9337M000 (EPCOS - TDK Electronics) and B43254C9337M000 (EPCOS - TDK Electronics) are marked as "Not For New Designs" by the manufacturer. While these parts meet the electrical and mechanical specifications, their product status restricts their use in new design implementations. These parts may be considered only for legacy system maintenance or repair applications where original part sourcing is not feasible.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher voltage rating than the original ESMM401VSN331MA30S?

A: Yes. A capacitor with a higher voltage rating (such as 420 V or 450 V) is electrically compatible with a 400 V application. The higher voltage rating provides additional safety margin and does not negatively affect circuit performance. The capacitance value and tolerance remain the same.

Q: What is the significance of ESR (Equivalent Series Resistance) differences between substitute parts?

A: ESR affects ripple current handling and heat generation. Lower ESR values (such as 200 mOhm in B43501C9337M000) indicate better performance in high-frequency ripple current applications. The main part ESMM401VSN331MA30S has an ESR of 1.005 Ohm, which is higher than most substitutes. Substitutes with lower ESR are generally superior for applications with significant AC ripple current.

Q: Are all substitute parts physically compatible with the original PCB footprint?

A: All listed substitute parts share the same lead spacing (10.00 mm) and case diameter (35.00 mm), ensuring PCB footprint compatibility. However, LLS2G331MELC has a seated height of 30.00 mm compared to 32.00 mm for the main part. Verify mechanical clearance in your specific application before substitution.

Q: What does "Not For New Designs" mean for B43501C9337M000 and B43254C9337M000?

A: This designation indicates that the manufacturer (EPCOS - TDK Electronics) does not recommend these parts for new product designs. These parts remain available for existing applications and legacy system support. For new designs, select from parts with "Active" product status: 381LR331M400A022, LLS2G331MELC, B43634C5337M000, or LQSW6331MELC30.

Q: How do operating temperature ranges affect part selection?

A: The main part operates from -25°C to 85°C. Several substitutes extend the upper limit to 105°C (381LR331M400A022, B43254C9337M000, LQSW6331MELC30), which is beneficial for applications in high-temperature environments. The lower temperature limit remains -25°C across all parts, ensuring compatibility in cold-temperature applications.

Q: What is the difference between lifetime specifications at different temperatures?

A: Lifetime specifications indicate the expected operational duration at a given temperature. The main part specifies 3000 Hrs @ 85°C. B43501C9337M000 offers 10000 Hrs @ 85°C (extended life at the same temperature), while 381LR331M400A022 and LQSW6331MELC30 specify 3000 Hrs @ 105°C (same life duration but at a higher temperature). Higher lifetime values indicate longer component reliability in the specified thermal environment.

Q: Can I substitute the ESMM401VSN331MA30S with a lower capacitance value?

A: No. All listed substitute parts maintain the same 330 µF capacitance value. Substitution with lower capacitance values would alter circuit performance and is not permitted under the equivalence criteria.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant or RoHS Compliant certification, meeting environmental and regulatory requirements equivalent to the main part ESMM401VSN331MA30S.