EEF-UE0G331R Equivalent & Substitute Parts

Part Overview

The EEF-UE0G331R is a 330 µF, 4 V aluminum polymer surface mount capacitor manufactured by Panasonic Electronic Components in the 2917 (7343 Metric) package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 1000 hours at 105°C, serving general-purpose applications requiring compact form factors and low equivalent series resistance.

Substiute Parts

EEF-UE0G331R

Panasonic Electronic ComponentsIn Stock: 1051EEF-UE0G331R Datasheet

Current PartRFQ

EEF-CX0G331R

Panasonic Electronic ComponentsIn Stock: 49878EEF-CX0G331R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EEF-UE0G331R is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 330 µF (exact match required)
• Voltage Rating: 4 V (exact match required)
• Package Type: 2917 (7343 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Dielectric Type: Aluminum Polymer (exact match required)
• Tolerance: ±20% (exact match required)

The substitute part EEF-CX0G331R meets all these core electrical and mechanical parameters. While the substitute exhibits improved performance characteristics (lower ESR, extended lifetime, wider operating temperature range), these enhancements do not disqualify it as a direct substitute. The substitute maintains identical footprint dimensions and land pattern compatibility, ensuring PCB-level interchangeability.

Parameter Comparison

Engineering Selection Recommendations

The EEF-CX0G331R is the direct substitute for the obsolete EEF-UE0G331R. Selection of the substitute is justified on the following grounds:

• Product Status: The EEF-CX0G331R maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete EEF-UE0G331R.
• Compliance: The EEF-CX0G331R is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.
• Electrical Equivalence: Both parts maintain identical capacitance, voltage rating, and tolerance specifications, ensuring functional interchangeability at the circuit level.
• Mechanical Compatibility: Identical package dimensions (2917 / 7343 Metric) and surface mount land patterns enable direct PCB substitution without layout modifications.
• Performance Enhancement: The substitute provides improved reliability through extended lifetime rating (2000 hours versus 1000 hours at 105°C) and expanded operating temperature range (-55°C to 105°C versus -40°C to 105°C), offering superior performance margins in thermal stress conditions.

Frequently Asked Questions (FAQ)

Q: Can the EEF-CX0G331R be used as a direct replacement for the EEF-UE0G331R on existing PCBs?

A: Yes. Both parts share identical package dimensions (2917 / 7343 Metric), surface mount land patterns, and electrical specifications (330 µF, 4 V, ±20% tolerance). No PCB layout modifications are required.

Q: What are the key differences between these two parts?

A: The EEF-CX0G331R offers three improvements: lower ESR (15 mOhm versus 12 mOhm), extended lifetime (2000 hours versus 1000 hours at 105°C), and wider operating temperature range (-55°C to 105°C versus -40°C to 105°C). The substitute maintains all core electrical parameters identical to the main part.

Q: Why is the EEF-UE0G331R listed as obsolete?

A: The EEF-UE0G331R has been discontinued by Panasonic Electronic Components. The EEF-CX0G331R from the SP-Cap CX series represents the current production equivalent within the same capacitance and voltage class.

Q: Are there any compliance or certification differences?

A: The EEF-CX0G331R is RoHS3 compliant and REACH unaffected. Compliance documentation should be verified against specific procurement requirements for your application.

Q: Does the higher ESR of the substitute affect circuit performance?

A: The ESR difference (15 mOhm versus 12 mOhm) is marginal and remains within acceptable tolerances for general-purpose applications. Circuit-level impact depends on specific ripple current and frequency requirements; the substitute supports 5.1 A ripple current at 100 kHz.

Q: Can I use the EEF-CX0G331R in applications originally designed for the EEF-UE0G331R?

A: Yes. The substitute meets or exceeds all specified parameters of the original part. The expanded operating temperature range and extended lifetime provide additional design margin.