ESRE331M02B Equivalent & Substitute Parts Reference

Part Overview

The ESRE331M02B is a 330 µF, 2 V aluminum polymer surface mount capacitor manufactured by Cornell Dubilier Electronics (CDE). This component is designed for bypass and decoupling applications in compact form factors. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing design support, production continuity, and component sourcing.

Substiute Parts

ESRE331M02B

Cornell Dubilier Electronics (CDE)In Stock: 1037ESRE331M02B Datasheet

Current PartRFQ

A700D337M002ATE012

KEMETIn Stock: 2316A700D337M002ATE012 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ESRE331M02B is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

• Capacitance value: 330 µF (exact match required)
• Voltage rating: 2 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required)
• Mounting type: Surface Mount (exact match required)
• Type: Aluminum Polymer (exact match required)

Compatible Variation Parameters:

• ESR: 12 mOhm or lower (lower ESR is acceptable)
• Operating temperature range: Must encompass or exceed -55°C ~ 105°C
• Ripple current capability: Equal to or greater than specified value
• Product status: Active status preferred for long-term availability
• RoHS and MSL compliance: Must maintain ROHS3 and MSL 3 standards

The substitute part A700D337M002ATE012 (KEMET) meets all critical matching parameters and maintains compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

The A700D337M002ATE012 (KEMET AO-Cap A700 series) is a direct functional equivalent to the ESRE331M02B. Selection is based on the following engineering criteria:

Compliance and Certification: Both parts maintain ROHS3 compliance and MSL 3 (168 Hours) moisture sensitivity ratings, ensuring compatibility with current manufacturing and environmental standards.

Product Lifecycle Status: The ESRE331M02B is classified as obsolete, creating supply chain risk. The A700D337M002ATE012 is active, providing assured long-term availability and production support.

Electrical Performance: The substitute part delivers equivalent or superior electrical characteristics: identical ESR (12 mOhm), higher ripple current capability (4.6 A vs. 3.3 A @ 100 kHz), and extended operating temperature range (-55°C ~ 125°C vs. -55°C ~ 105°C).

Physical Compatibility: Both parts use identical footprints (2917 / 7343 Metric) and land sizes. The substitute part has a lower seated height (3.10mm vs. 4.10mm), which is mechanically compatible with designs accommodating the original part.

Packaging Availability: The substitute is available in Tape & Reel (TR) packaging with 2246 units in stock, supporting production volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the A700D337M002ATE012 be used as a direct replacement for the ESRE331M02B in existing designs?

A: Yes. Both parts share identical electrical specifications (330 µF, 2 V, ±20%, 12 mOhm ESR), package footprint (2917 / 7343 Metric), and mounting type (Surface Mount). The substitute meets or exceeds all critical parameters required for functional equivalence.

Q: What are the differences between these two parts?

A: The primary differences are manufacturer (CDE vs. KEMET), product status (obsolete vs. active), and minor physical variations. The substitute has a lower seated height (3.10mm vs. 4.10mm) and extended operating temperature range (-55°C ~ 125°C vs. -55°C ~ 105°C). Both differences are compatible with designs using the original part.

Q: Are there any compliance or certification concerns with substitution?

A: No. Both parts maintain ROHS3 compliance and identical MSL 3 ratings. No additional qualification is required from a regulatory or environmental standpoint.

Q: Does the lower ESR of the substitute part affect circuit performance?

A: No. Lower ESR is a compatible variation that improves performance characteristics. The substitute maintains the specified 12 mOhm ESR, ensuring electrical behavior equivalent to the original part.

Q: What is the impact of the extended operating temperature range on the substitute part?

A: The extended range (-55°C ~ 125°C vs. -55°C ~ 105°C) provides additional thermal margin and is fully compatible with designs specified for the original part's temperature range.

Q: Is the reduced height of the substitute part a concern for PCB assembly?

A: No. The reduced seated height (3.10mm vs. 4.10mm) is mechanically compatible with designs accommodating the original 4.10mm height. This variation does not affect electrical performance or assembly compatibility.

Q: What packaging options are available for the substitute part?

A: The A700D337M002ATE012 is supplied in Tape & Reel (TR) packaging, standard for high-volume surface mount production. This packaging format is compatible with automated assembly equipment.