EEF-UE0D331ER Equivalent & Substitute Parts

Part Overview

The EEF-UE0D331ER is a 330 µF, 2 V aluminum polymer capacitor manufactured by Panasonic Electronic Components in the 2917 (7343 Metric) surface mount package. This component is classified as obsolete, indicating discontinuation from active production. The part was designed for general purpose applications requiring low ESR characteristics and stable performance across industrial temperature ranges.

Identification of substitute parts is necessary due to the obsolete status of the EEF-UE0D331ER. Equivalent alternatives maintain the same electrical specifications and physical footprint, ensuring direct replacement capability in existing designs without circuit modification.

Substiute Parts

EEF-UE0D331ER

Panasonic Electronic ComponentsIn Stock: 1013EEF-UE0D331ER Datasheet

Current PartRFQ

EEF-CX0D331R

Panasonic Electronic ComponentsIn Stock: 7311EEF-CX0D331R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EEF-UE0D331ER is determined by the following critical 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 for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Dielectric Type: Aluminum Polymer (exact match required)

The substitute part EEF-CX0D331R meets all mandatory substitution criteria. While secondary parameters such as ESR, ripple current rating, and lifetime specifications differ, these variations remain within acceptable ranges for general purpose applications and do not preclude functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The EEF-CX0D331R is the direct equivalent substitute for the obsolete EEF-UE0D331ER. Selection of this substitute is supported by the following factors:

Product Status: The EEF-CX0D331R maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete EEF-UE0D331ER.

Compliance Certifications: The EEF-CX0D331R is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement in regulated industries.

Electrical Equivalence: Both parts share identical capacitance, voltage rating, tolerance, and package specifications. The EEF-CX0D331R demonstrates improved performance characteristics, including extended lifetime (2000 Hrs vs. 1000 Hrs @ 105°C), lower operating temperature floor (-55°C vs. -40°C), and higher ripple current capability (5.1 A vs. 3.3 A @ 100 kHz).

Physical Compatibility: Identical package dimensions and surface mount land size ensure direct PCB footprint compatibility without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the EEF-CX0D331R be used as a direct replacement for the EEF-UE0D331ER without circuit modification?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (2 V), tolerance (±20%), package type (2917 / 7343 Metric), and mounting configuration (surface mount). The physical footprint and electrical interface are equivalent.

Q: What are the differences between the EEF-UE0D331ER and EEF-CX0D331R?

A: The primary differences are ESR (12 mOhm vs. 15 mOhm), lifetime rating (1000 Hrs vs. 2000 Hrs @ 105°C), operating temperature range (-40°C to 105°C vs. -55°C to 105°C), ripple current capacity (3.3 A vs. 5.1 A @ 100 kHz), and product status (obsolete vs. active). The EEF-CX0D331R offers enhanced performance specifications.

Q: Is the EEF-CX0D331R available in the same packaging format as the EEF-UE0D331ER?

A: The EEF-CX0D331R is supplied in Tape & Reel (TR) packaging, while the EEF-UE0D331ER packaging format is not specified in the provided data. Both parts use the identical 2917 (7343 Metric) surface mount package case.

Q: Does the EEF-CX0D331R meet current regulatory standards?

A: Yes. The EEF-CX0D331R is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component procurement.

Q: Why should I select the EEF-CX0D331R over the obsolete EEF-UE0D331ER?

A: The EEF-CX0D331R is the active production equivalent with improved performance characteristics, regulatory compliance, and guaranteed long-term supply availability. The obsolete status of the EEF-UE0D331ER makes the EEF-CX0D331R the appropriate engineering choice for new designs and component replenishment.