EEF-UD0D271CX Equivalent & Substitute Parts

Part Overview

The EEF-UD0D271CX is a 270 µF, 2 V aluminum polymer capacitor manufactured by Panasonic Electronic Components in the 2917 (7343 Metric) surface mount package. This component is designed for general purpose applications requiring compact form factor and polymer dielectric characteristics.

The EEF-UD0D271CX has reached obsolete product status. Identifying qualified substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for systems utilizing this capacitor.

Substiute Parts

EEF-UD0D271CX

Panasonic Electronic ComponentsIn Stock: 1262EEF-UD0D271CX Datasheet

Current PartRFQ

EEF-SX0D271ER

Panasonic Electronic ComponentsIn Stock: 11657EEF-SX0D271ER Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EEF-UD0D271CX is determined by strict equivalence across the following parameters:

• Capacitance value: 270 µF (exact match required)
• Voltage rating: 2 V (exact match required)
• Tolerance: ±20% (exact match required)
• Dielectric type: Aluminum Polymer (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 parameters such as ESR, lifetime rating, and operating temperature range may differ within acceptable engineering margins but do not disqualify substitution when the core electrical and mechanical specifications align.

Parameter Comparison

Engineering Selection Recommendations

The EEF-SX0D271ER is a direct functional substitute for the obsolete EEF-UD0D271CX. Both components share identical electrical specifications (capacitance, voltage, tolerance) and mechanical compatibility (package, footprint, mounting type).

The EEF-SX0D271ER offers additional advantages: active product status ensures ongoing availability, extended lifetime rating (2000 Hrs @ 105°C versus 1000 Hrs @ 105°C), and expanded operating temperature range (-55°C ~ 105°C versus -40°C ~ 105°C). The substitute part is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements.

The EEF-SX0D271ER is physically compatible with existing PCB layouts. The reduced seated height (0.079" versus 0.118") presents no clearance concerns for standard surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the EEF-SX0D271ER be used as a direct replacement for the EEF-UD0D271CX?

A: Yes. Both parts are 270 µF, 2 V aluminum polymer capacitors in the 2917 (7343 Metric) package with ±20% tolerance. Electrical and mechanical specifications are equivalent for general purpose applications.

Q: What is the difference in height between these two parts?

A: The EEF-UD0D271CX has a maximum seated height of 0.118" (3.00mm), while the EEF-SX0D271ER measures 0.079" (2.00mm). The substitute part is physically shorter and will fit within existing PCB clearance allocations designed for the original part.

Q: Does the substitute part meet current compliance standards?

A: Yes. The EEF-SX0D271ER is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why does the substitute part have a longer lifetime rating?

A: The EEF-SX0D271ER (SP-Cap SX series) is rated for 2000 Hrs @ 105°C compared to the EEF-UD0D271CX (SP-Cap UD series) at 1000 Hrs @ 105°C. This reflects improvements in polymer capacitor technology between the two product series.

Q: Is the substitute part currently available?

A: Yes. The EEF-SX0D271ER maintains active product status with substantial inventory availability, ensuring reliable supply for new designs and production requirements.