EEF-UD0J151CE Equivalent & Substitute Parts

Part Overview

The EEF-UD0J151CE is a 150 µF, 6.3 V aluminum polymer surface mount capacitor manufactured by Panasonic Electronic Components in the 2917 (7343 Metric) package. This part is classified as obsolete, which necessitates identification of active equivalent alternatives for new designs and ongoing production requirements. The capacitor is rated for 1000 hours at 105°C and operates across a temperature range of -40°C to 105°C, making it suitable for general-purpose applications requiring stable capacitance and low ESR characteristics in compact form factors.

Substiute Parts

EEF-UD0J151CE

Panasonic Electronic ComponentsIn Stock: 1082EEF-UD0J151CE Datasheet

Current PartRFQ

EEF-CX0J151R

Panasonic Electronic ComponentsIn Stock: 773EEF-CX0J151R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EEF-UD0J151CE is determined by strict equivalence across the following parameters:

• Capacitance value: 150 µF (exact match required)
• Voltage rating: 6.3 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package: 2917 (7343 Metric) (exact match required for PCB compatibility)
• Mounting type: Surface Mount (exact match required)
• Type: Aluminum Polymer (exact match required)

The substitute part EEF-CX0J151R meets all these criteria. While the substitute exhibits improved electrical characteristics (lower ESR, extended lifetime, wider operating temperature range), these enhancements do not disqualify it as a direct functional equivalent. The substitute maintains identical footprint dimensions and land size, ensuring mechanical and electrical compatibility without PCB redesign.

Parameter Comparison

Engineering Selection Recommendations

The EEF-CX0J151R is the direct functional equivalent for the obsolete EEF-UD0J151CE. Selection of the substitute part is justified on the following basis:

• Identical electrical specifications (capacitance, voltage, tolerance) ensure drop-in compatibility
• Identical package and footprint eliminate PCB redesign requirements
• Active product status ensures long-term availability and supply chain continuity
• ROHS3 compliance and REACH unaffected status satisfy modern regulatory requirements
• Improved lifetime rating (2000 Hrs vs. 1000 Hrs @ 105°C) and lower ESR provide enhanced reliability margins
• Reduced seated height (1.90mm vs. 3.00mm) offers design flexibility for space-constrained applications

Frequently Asked Questions (FAQ)

Q: Can the EEF-CX0J151R be used as a direct replacement for the EEF-UD0J151CE without PCB modification?

A: Yes. Both parts share identical capacitance (150 µF), voltage rating (6.3 V), tolerance (±20%), package designation (2917 / 7343 Metric), and footprint dimensions (7.30mm x 4.30mm). No PCB layout changes are required.

Q: What is the significance of the height difference between these parts?

A: The EEF-CX0J151R has a maximum seated height of 1.90mm compared to 3.00mm for the EEF-UD0J151CE. This 1.10mm reduction provides additional clearance in height-constrained assemblies. The lower profile does not affect electrical performance or compatibility.

Q: Why is the EEF-UD0J151CE classified as obsolete?

A: Obsolete status indicates that Panasonic has discontinued production and support for this part number. The EEF-CX0J151R represents the active equivalent within Panasonic's current product portfolio.

Q: Are there compliance differences between the main part and substitute?

A: The EEF-CX0J151R carries ROHS3 compliance and REACH unaffected status. The main part specifications do not document these certifications. For applications requiring regulatory compliance documentation, the substitute part is the appropriate selection.

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

A: The EEF-CX0J151R specifies 15 mOhm ESR, while the main part does not provide an ESR value. Lower ESR generally reduces voltage ripple and heat generation in high-frequency applications. This characteristic makes the substitute suitable for applications where the main part was previously used.

Q: What is the ripple current rating of the substitute part?

A: The EEF-CX0J151R is rated for 5.1 A ripple current at 100 kHz. This specification is not provided for the main part.