SPCX331M02R Equivalent & Substitute Parts

Part Overview

The SPCX331M02R is a 330 µF, 2 V aluminum polymer surface mount capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 2917 (7343 Metric) package. This component is classified as obsolete, indicating that CDE has discontinued production. The part features a 15 mOhm equivalent series resistance (ESR) and supports a 1000-hour lifetime rating at 105°C, making it suitable for general-purpose applications requiring compact form factors and low impedance characteristics.

Due to the obsolete status of the SPCX331M02R, identifying functionally equivalent alternatives from active manufacturers is necessary to support ongoing production requirements, design revisions, and long-term supply chain continuity. Substitute parts must maintain electrical compatibility across capacitance, voltage rating, package dimensions, and thermal performance parameters while meeting current industry compliance standards.

Substiute Parts

SPCX331M02R

Cornell Dubilier Electronics (CDE)In Stock: 1127SPCX331M02R Datasheet

Current PartRFQ

EEF-CX0D331R

Panasonic Electronic ComponentsIn Stock: 7311EEF-CX0D331R Datasheet

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EEF-CX0E331R

Panasonic Electronic ComponentsIn Stock: 13764EEF-CX0E331R Datasheet

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ECASD60D337M007K00

Murata ElectronicsIn Stock: 6993ECASD60D337M007K00 Datasheet

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EEF-GX0D331R

Panasonic Electronic ComponentsIn Stock: 18672EEF-GX0D331R Datasheet

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EEF-LX0D331R

Panasonic Electronic ComponentsIn Stock: 3903EEF-LX0D331R Datasheet

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EEF-LX0D331R4

Panasonic Electronic ComponentsIn Stock: 12804EEF-LX0D331R4 Datasheet

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EEF-SX0D331E4

Panasonic Electronic ComponentsIn Stock: 45332EEF-SX0D331E4 Datasheet

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EEF-SX0D331ER

Panasonic Electronic ComponentsIn Stock: 7617EEF-SX0D331ER Datasheet

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EEF-SX0D331R

Panasonic Electronic ComponentsIn Stock: 8076EEF-SX0D331R Datasheet

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EEF-SX0D331XE

Panasonic Electronic ComponentsIn Stock: 4962EEF-SX0D331XE Datasheet

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EEF-SX0D331XR

Panasonic Electronic ComponentsIn Stock: 16624EEF-SX0D331XR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SPCX331M02R are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Electrical Equivalence): Parts that maintain identical capacitance (330 µF), voltage rating (2 V), tolerance (±20%), and package dimensions (2917 / 7343 Metric) as the original component. These parts satisfy the core functional requirements for direct replacement in existing designs without circuit modification.

Upgrade Substitutes (Enhanced Performance): Parts that exceed the original specifications in voltage rating (2.5 V instead of 2 V) while maintaining all other critical parameters. These parts provide additional design margin and are suitable for applications where voltage headroom is beneficial.

Key Parameters Determining Substitution Eligibility:

• Capacitance value: 330 µF (exact)
• Voltage rating: 2 V minimum (2.5 V acceptable as upgrade)
• Package: 2917 (7343 Metric) (exact)
• Mounting: Surface Mount (exact)
• Tolerance: ±20% (exact or tighter acceptable)
• Compliance: ROHS3 Compliant (required)

ESR, ripple current, lifetime rating, and operating temperature range are secondary parameters that vary among substitutes and should be evaluated based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: EEF-CX0D331R

The EEF-CX0D331R from Panasonic Electronic Components is the direct electrical equivalent to the SPCX331M02R. This part maintains identical capacitance (330 µF), voltage rating (2 V), tolerance (±20%), ESR (15 mOhm), and package dimensions (2917 / 7343 Metric). The EEF-CX0D331R is classified as Active, ensuring long-term availability and supply chain stability. The component exceeds the original lifetime specification with 2000 hours at 105°C compared to 1000 hours, and extends the operating temperature range to -55°C ~ 105°C. ROHS3 compliance is maintained. This part is suitable for direct replacement in existing designs without modification.

Secondary Recommendation: EEF-CX0E331R (Upgrade Option)

The EEF-CX0E331R provides an enhanced voltage rating of 2.5 V while maintaining all other critical parameters identical to the original specification. This upgrade option is appropriate for applications where additional voltage margin is desired or where circuit redesign permits the use of a higher-rated component. Active product status and ROHS3 compliance are confirmed.

Alternative Options for Low-ESR Applications: EEF-GX0D331R, EEF-LX0D331R, EEF-LX0D331R4, EEF-SX0D331E4, EEF-SX0D331XE

These alternatives provide reduced ESR values (ranging from 3 mOhm to 6 mOhm) compared to the original 15 mOhm specification. Selection among these options depends on application-specific ripple current requirements and thermal performance needs. All listed alternatives maintain the 2 V voltage rating, 330 µF capacitance, 2917 package, and Active product status with ROHS3 compliance.

Not Recommended for New Designs: EEF-SX0D331R

The EEF-SX0D331R is classified as "Not For New Designs" and should not be selected for new product development, despite meeting electrical specifications.

Obsolete Alternatives: ECASD60D337M007K00

The ECASD60D337M007K00 from Murata Electronics is classified as Obsolete and should not be considered as a long-term substitute solution, despite matching the original part's lifetime and operating temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can the EEF-CX0D331R be used as a direct replacement for the SPCX331M02R without circuit modification?

A: Yes. The EEF-CX0D331R maintains identical electrical specifications (330 µF, 2 V, ±20% tolerance, 15 mOhm ESR) and package dimensions (2917 / 7343 Metric). The component is pin-compatible and functionally equivalent for direct substitution in existing designs.

Q: What is the difference between the EEF-CX0D331R and EEF-CX0E331R?

A: The primary difference is the voltage rating. The EEF-CX0D331R is rated at 2 V, matching the original SPCX331M02R specification. The EEF-CX0E331R is rated at 2.5 V, providing additional voltage margin. Both parts share identical capacitance (330 µF), tolerance (±20%), ESR (15 mOhm), and package dimensions. The 2.5 V variant is suitable for applications where higher voltage headroom is beneficial.

Q: Why do some substitute parts have lower ESR values than the original SPCX331M02R?

A: ESR is a secondary performance parameter that varies across different polymer capacitor series and manufacturing processes. Lower ESR values (such as 3 mOhm in the EEF-GX0D331R or 6 mOhm in the EEF-LX0D331R) indicate improved high-frequency performance and reduced ripple current dissipation. Selection of lower-ESR alternatives should be based on specific application requirements for ripple current handling and thermal performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference are ROHS3 compliant, meeting current regulatory requirements for hazardous substance restrictions.

Q: What is the significance of the "Active" product status designation?

A: Active status indicates that the manufacturer continues production and supports long-term supply availability. This designation ensures that the component can be sourced for current production runs and future design revisions. The original SPCX331M02R is classified as Obsolete, meaning CDE no longer manufactures this part, making active alternatives necessary for supply chain continuity.

Q: Can I use the EEF-SX0D331R as a substitute?

A: The EEF-SX0D331R meets all electrical and mechanical specifications for substitution; however, it is classified as "Not For New Designs." This designation indicates that Panasonic recommends against using this part in new product development. For new designs, select from parts with Active status, such as the EEF-CX0D331R, EEF-GX0D331R, EEF-LX0D331R, or EEF-SX0D331E4.

Q: How do the operating temperature ranges compare between the original part and substitutes?

A: The SPCX331M02R operates from -40°C to 105°C. Most active substitutes from Panasonic extend this range to -55°C to 105°C, providing improved low-temperature performance. The ECASD60D337M007K00 from Murata maintains the -40°C to 105°C range. Selection should be based on application-specific temperature requirements.

Q: What is the difference between the EEF-LX0D331R and EEF-LX0D331R4?

A: Both parts are from the Panasonic SP-Cap LX series with identical capacitance (330 µF), voltage (2 V), and package (2917 / 7343 Metric). The primary difference is ESR: the EEF-LX0D331R has 6 mOhm ESR, while the EEF-LX0D331R4 has 4.5 mOhm ESR. The lower ESR variant (R4) provides improved ripple current handling and reduced thermal dissipation.

Q: Are the package dimensions identical across all substitute parts?

A: All substitute parts use the 2917 (7343 Metric) package with identical land size (0.287" L x 0.169" W / 7.30mm x 4.30mm). However, seated heights vary slightly among series: CX and SX series are 0.075" to 0.079" (1.90mm to 2.00mm), LX series is 0.083" (2.10mm), and the Murata ECAS series is 0.110" (2.80mm). Verify PCB clearance requirements for the Murata alternative if height is a design constraint.

Q: Which substitute part offers the best overall performance improvement?

A: The EEF-GX0D331R provides the lowest ESR (3 mOhm) and highest ripple current rating (10.2 A @ 100 kHz) among all substitutes, representing the most significant performance enhancement. However, selection should be based on specific application requirements rather than maximum performance alone. For direct replacement with minimal design impact, the EEF-CX0D331R is recommended.