ESRE331M0EXR Equivalent & Substitute Parts Reference

Part Overview

The ESRE331M0EXR is a 330 µF, 2.5 V aluminum polymer surface mount capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 2917 (7343 Metric) package. This component is designed for bypass and decoupling applications in electronic circuits. The part is currently classified as obsolete, making identification of functionally equivalent substitutes necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

ESRE331M0EXR

Cornell Dubilier Electronics (CDE)In Stock: 1017ESRE331M0EXR Datasheet

Current PartRFQ

EEF-SX0E331ER

Panasonic Electronic ComponentsIn Stock: 19654EEF-SX0E331ER Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ESRE331M0EXR is determined by strict equivalence across the following critical parameters:

Mandatory Match Criteria:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 2.5 V (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Type: Aluminum Polymer (exact match required for electrical performance)
• Tolerance: ±20% (exact match required)

Allowable Variation Criteria:

• ESR: Substitute may be equal to or lower than 10 mOhm (lower ESR improves performance)
• Lifetime @ Temperature: Substitute may be equal to or greater than 1000 Hrs @ 105°C (higher lifetime improves reliability)
• Ripple Current @ 100 kHz: Substitute may be equal to or greater than 3.5 A (higher ripple current capability improves margin)
• Height - Seated: Substitute must not exceed 0.161" (4.10mm) maximum to ensure PCB clearance compatibility

The substitute part EEF-SX0E331ER meets all mandatory match criteria and demonstrates improved performance characteristics in ESR, lifetime, and ripple current specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: EEF-SX0E331ER (Panasonic Electronic Components)

The EEF-SX0E331ER is a direct functional equivalent to the ESRE331M0EXR with the following engineering basis:

1. Electrical Equivalence: Both parts share identical capacitance (330 µF), voltage rating (2.5 V), tolerance (±20%), and type (aluminum polymer). These parameters define the core electrical function in bypass and decoupling applications.

2. Physical Compatibility: Both parts use the 2917 (7343 Metric) surface mount package with identical land pattern dimensions (0.287" L x 0.169" W). The substitute's reduced height (0.079" vs. 0.161") provides additional PCB clearance margin and does not create compatibility issues.

3. Performance Enhancement: The substitute demonstrates improved electrical characteristics across three parameters: lower ESR (9 mOhm vs. 10 mOhm), higher ripple current capability (6.3 A vs. 3.5 A @ 100 kHz), and extended lifetime (2000 Hrs vs. 1000 Hrs @ 105°C). These improvements reduce thermal stress and extend component service life.

4. Regulatory Compliance: Both parts are ROHS3 compliant. The substitute carries REACH Unaffected status, confirming compliance with additional European chemical regulations.

5. Product Status: The substitute is in active production status, ensuring long-term availability and supply chain stability, whereas the main part is obsolete.

6. Packaging Format: The substitute is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly operations.

Frequently Asked Questions (FAQ)

Q: Can the EEF-SX0E331ER be used as a direct replacement for the ESRE331M0EXR on existing PCBs?

A: Yes. Both parts use the identical 2917 (7343 Metric) surface mount package with matching land pattern dimensions. The substitute's lower seated height (0.079" vs. 0.161") ensures compatibility with existing PCB designs without clearance conflicts.

Q: Are there any electrical performance differences between these parts?

A: The substitute demonstrates improved electrical performance. ESR is lower (9 mOhm vs. 10 mOhm), ripple current capability is higher (6.3 A vs. 3.5 A @ 100 kHz), and thermal lifetime is extended (2000 Hrs vs. 1000 Hrs @ 105°C). These differences favor the substitute in applications requiring lower impedance or higher current handling.

Q: What is the significance of the different product status (Obsolete vs. Active)?

A: The ESRE331M0EXR is obsolete and no longer manufactured by Cornell Dubilier Electronics. The EEF-SX0E331ER is in active production by Panasonic, ensuring continued availability for new designs and replacement stock for existing systems.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant. The substitute additionally carries REACH Unaffected status, confirming compliance with European chemical substance regulations.

Q: What is the difference in packaging between these parts?

A: The main part is supplied in standard packaging format (not specified in detail). The substitute is supplied in Tape & Reel (TR) format, which is standard for automated surface mount assembly operations and provides better handling efficiency in production environments.

Q: Are the capacitance tolerance and voltage rating identical?

A: Yes. Both parts have ±20% capacitance tolerance and 2.5 V voltage rating. These specifications are identical and determine functional equivalence in the circuit.

Q: Can the substitute handle the same operating temperature range?

A: Yes. Both parts operate across the identical temperature range of -55°C to 105°C, ensuring thermal compatibility in all specified environmental conditions.