EEF-UD0D271CE Equivalent & Substitute Parts

Part Overview

The EEF-UD0D271CE is a 270 µF, 2 V aluminum polymer capacitor in a 2917 (7343 Metric) surface mount package manufactured by Panasonic Electronic Components. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity. The UD series has been superseded by newer polymer capacitor lines offering improved performance characteristics and extended component availability.

Substiute Parts

EEF-UD0D271CE

Panasonic Electronic ComponentsIn Stock: 936EEF-UD0D271CE Datasheet

Current PartRFQ

EEF-SX0D271ER

Panasonic Electronic ComponentsIn Stock: 11657EEF-SX0D271ER Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EEF-UD0D271CE is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance value: 270 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)

The substitute part EEF-SX0D271ER meets all mandatory equivalence criteria. Additional performance improvements in the substitute part (extended lifetime, lower ESR, wider operating temperature range) do not disqualify it as a direct substitute; these represent enhanced specifications within the same functional category.

Parameter Comparison

Engineering Selection Recommendations

The EEF-SX0D271ER is the direct substitute for the obsolete EEF-UD0D271CE. Both parts are manufactured by Panasonic Electronic Components and share identical electrical specifications (270 µF, 2 V, ±20% tolerance) and mechanical compatibility (2917 package, surface mount configuration).

The substitute part offers active product status, ensuring long-term availability and supply chain continuity. The EEF-SX0D271ER is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The extended lifetime rating (2000 Hrs @ 105°C versus 1000 Hrs @ 105°C) and specified ESR (9 mOhm) represent performance enhancements that do not compromise backward compatibility.

The wider operating temperature range of the substitute (-55°C ~ 105°C versus -40°C ~ 105°C) provides additional design margin for applications operating at lower ambient temperatures.

Frequently Asked Questions (FAQ)

Q: Can the EEF-SX0D271ER be used as a direct replacement for the EEF-UD0D271CE in existing designs?

A: Yes. Both parts share identical capacitance (270 µF), voltage rating (2 V), tolerance (±20%), package (2917), and mounting type (surface mount). The substitute part is electrically and mechanically compatible with designs specified for the obsolete part.

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

A: The primary differences are product status (obsolete versus active), lifetime rating (1000 Hrs versus 2000 Hrs @ 105°C), operating temperature range (-40°C ~ 105°C versus -55°C ~ 105°C), and ESR specification (not provided versus 9 mOhm). These differences represent performance improvements in the substitute part.

Q: Are there any height or footprint differences between these parts?

A: The footprint dimensions are identical (0.287" L x 0.169" W / 7.30mm x 4.30mm). The seated height differs slightly: the main part is 0.118" (3.00mm) maximum, while the substitute is 0.079" (2.00mm) maximum. This reduced height in the substitute part may provide additional clearance in space-constrained applications.

Q: Does the EEF-SX0D271ER meet current regulatory compliance standards?

A: Yes. The substitute part is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What is the packaging format for the substitute part?

A: The EEF-SX0D271ER is supplied in Tape & Reel (TR) format, suitable for automated assembly processes.