ESRE331M0EXB

Part Overview

The ESRE331M0EXB is a 330 µF, 2.5 V aluminum-polymer capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 2917 (7343 Metric) package format. This component is designed for bypass and decoupling applications with a 10mOhm equivalent series resistance and 1000-hour lifetime rating at 105°C. The product status is obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

ESRE331M0EXB

Cornell Dubilier Electronics (CDE)In Stock: 1216ESRE331M0EXB Datasheet

Current PartRFQ

EEF-SX0E331ER

Panasonic Electronic ComponentsIn Stock: 19654EEF-SX0E331ER Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ESRE331M0EXB is based on strict electrical and mechanical parameter alignment. The following criteria determine valid substitute compatibility:

Electrical Parameters:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 2.5 V (exact match required)
• Tolerance: ±20% (exact match required)
• Capacitor Type: Polymer (Aluminum) (exact match required)

Mechanical & Thermal Parameters:

• Package / Case: 2917 (7343 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C to 105°C (minimum range required)
• RoHS3 Compliance: Required for regulatory compliance

Performance Parameters (Enhanced Substitutes Permitted):

• ESR: Can be equal or lower than 10mOhm
• Lifetime @ 105°C: Can be equal to or greater than 1000 hours
• Ripple Current @ 100 kHz: Can be equal to or greater than 3.5 A

The EEF-SX0E331ER from Panasonic Electronic Components qualifies as a direct substitute, meeting all mandatory electrical and mechanical requirements while offering improved performance characteristics in ESR, thermal lifetime, and ripple current handling.

Parameter Comparison

Engineering Selection Recommendations

The EEF-SX0E331ER (Panasonic Electronic Components) is the qualified substitute for the obsolete ESRE331M0EXB. Selection of this substitute is supported by the following engineering factors:

Compliance & Regulatory:

• Both components maintain ROHS3 compliance, ensuring continued regulatory adherence in production environments
• REACH Unaffected status confirmed for both parts

Product Status:

• The main part (ESRE331M0EXB) carries obsolete status, limiting availability and long-term supply assurance
• The substitute (EEF-SX0E331ER) maintains active product status with documented inventory of 19,582 pieces

Electrical Equivalence:

• Identical capacitance (330 µF), voltage rating (2.5 V), and tolerance (±20%) ensure functional compatibility
• Identical operating temperature range (-55°C to 105°C) maintains thermal performance requirements

Performance Enhancement:

• Reduced ESR (9mOhm versus 10mOhm) provides improved ripple current handling
• Extended thermal lifetime (2000 hours versus 1000 hours at 105°C) enhances component longevity
• Increased ripple current capability (6.3 A versus 3.5 A at 100 kHz) supports higher-demand applications

Mechanical Considerations:

• Identical package footprint (2917 / 7343 Metric) and surface mount land size enable direct PCB-level substitution
• Reduced seated height (2.00mm versus 4.10mm) provides additional design flexibility and clearance advantages

Frequently Asked Questions (FAQ)

Q: Can the EEF-SX0E331ER be directly substituted for the ESRE331M0EXB without PCB redesign? A: Yes. Both components share identical package footprint (2917 / 7343 Metric), identical surface mount land size, and identical electrical specifications (330 µF, 2.5 V, ±20%). The reduced seated height of the EEF-SX0E331ER (2.00mm versus 4.10mm) presents no compatibility constraints; components with lower height are suitable for applications designed for greater height.

Q: What are the key electrical parameters that define substitution compatibility? A: Substitution compatibility is determined by matching capacitance (330 µF), voltage rating (2.5 V), tolerance (±20%), and capacitor type (polymer aluminum). These four parameters define functional equivalence. Additional parameters such as ESR, thermal lifetime, and ripple current capacity may be equal to or exceed the original component's specifications without affecting substitution validity.

Q: How does the performance differ between the original and substitute parts? A: The EEF-SX0E331ER demonstrates three measurable performance improvements: lower equivalent series resistance (9mOhm versus 10mOhm), extended thermal lifetime at 105°C (2000 hours versus 1000 hours), and increased ripple current handling capacity (6.3 A versus 3.5 A at 100 kHz). These improvements result in reduced heat generation, extended component life, and increased design margin in high-ripple applications.

Q: Are there regulatory or compliance concerns with this substitution? A: No. Both components maintain ROHS3 compliance and REACH Unaffected status, confirming equivalence for regulatory and environmental requirements.

Q: Why is the seated height difference significant if PCB redesign is not required? A: The reduced seated height of the EEF-SX0E331ER (2.00mm versus 4.10mm) is advantageous for PCB assembly. Components with lower profiles present no compatibility risk in applications designed for greater height, and provide additional clearance for neighboring components or assembly processes. No component-level modifications are necessary.

Q: How should the choice between these parts be made for new designs? A: For new designs, the EEF-SX0E331ER (Panasonic) is the appropriate selection. The original ESRE331M0EXB carries obsolete product status, limiting supply availability. The Panasonic substitute maintains active product status, superior performance characteristics, and improved thermal reliability, making it the engineering choice for ongoing and future implementations.