EEF-UE0D271R Equivalent & Substitute Parts

Part Overview

The EEF-UE0D271R is a 270 µF, 2 V aluminum polymer surface mount capacitor manufactured by Panasonic Electronic Components in the 2917 (7343 Metric) package. This part operates across -40°C to 105°C with a rated lifetime of 1000 hours at 105°C and an ESR of 12 mOhm. The product is currently obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs and production continuity.

Substiute Parts

EEF-UE0D271R

Panasonic Electronic ComponentsIn Stock: 3137EEF-UE0D271R Datasheet

Current PartRFQ

EEF-CX0D271R

Panasonic Electronic ComponentsIn Stock: 729EEF-CX0D271R Datasheet

DirectRFQ

EEF-CX0D271XR

Panasonic Electronic ComponentsIn Stock: 992EEF-CX0D271XR Datasheet

DirectRFQ

EEF-SX0D271E4

Panasonic Electronic ComponentsIn Stock: 12785EEF-SX0D271E4 Datasheet

SimilarRFQ

EEF-SX0D271ER

Panasonic Electronic ComponentsIn Stock: 11657EEF-SX0D271ER Datasheet

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EEF-SX0D271R

Panasonic Electronic ComponentsIn Stock: 10731EEF-SX0D271R Datasheet

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EEF-SX0D271XE

Panasonic Electronic ComponentsIn Stock: 1059EEF-SX0D271XE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EEF-UE0D271R is determined by strict adherence to the following electrical and mechanical parameters:

Core Compatibility Requirements:

• Capacitance: 270 µF (exact match required)
• Voltage Rating: 2 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package: 2917 (7343 Metric) (exact match required)
• Type: Aluminum Polymer (exact match required)
• Mounting Type: Surface Mount (exact match required)

Performance Parameters (allowable variation):

• ESR: 12 mOhm baseline; substitutes with lower ESR values (4.5 mOhm to 12 mOhm) are acceptable as they represent improved performance
• Lifetime @ 105°C: 1000 Hrs baseline; substitutes with equal or extended lifetime (1000 Hrs to 2000 Hrs) are acceptable
• Operating Temperature Range: -40°C ~ 105°C baseline; substitutes with extended lower temperature range (-55°C) are acceptable

Product Status Consideration: Active and Not For New Designs parts are listed. Obsolete status of the main part requires substitution; Active status parts are preferred for new designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation for New Designs: EEF-CX0D271XR is the direct electrical and mechanical equivalent with Active product status, ROHS3 compliance, and REACH unaffected certification. This part maintains the 12 mOhm ESR specification, provides extended lifetime (2000 Hrs @ 105°C), and supports an expanded operating temperature range (-55°C ~ 105°C). The reduced height (1.90mm vs 4.20mm) offers improved PCB layout flexibility.

Alternative for Enhanced Performance: EEF-SX0D271E4 provides the lowest ESR (4.5 mOhm) among active substitutes, enabling superior ripple current handling (8.5 A @ 100 kHz) and extended lifetime (2000 Hrs @ 105°C). Active product status and full compliance certifications apply. Height is 2.00mm.

Secondary Alternatives: EEF-SX0D271XE (6 mOhm ESR) and EEF-SX0D271ER (9 mOhm ESR) provide intermediate ESR performance with identical electrical ratings and compliance status. Both support extended temperature range and 2000-hour lifetime.

Not Recommended for New Designs: EEF-SX0D271R carries "Not For New Designs" status and should not be selected for new product development despite electrical compatibility.

Voltage Specification Note: EEF-CX0D271R does not specify voltage rating in available data. Confirm 2 V rating requirement before selection if voltage specification is critical to application.

Frequently Asked Questions (FAQ)

Q: Can EEF-UE0D271R be directly replaced with EEF-CX0D271XR? A: Yes. Both parts share identical capacitance (270 µF), voltage rating (2 V), tolerance (±20%), package (2917 Metric), and ESR (12 mOhm). EEF-CX0D271XR is Active status with extended lifetime and temperature range, making it a direct functional substitute.

Q: What is the difference between EEF-SX0D271E4, EEF-SX0D271ER, and EEF-SX0D271XE? A: All three are SP-Cap SX series parts with identical capacitance, voltage, and lifetime specifications. They differ in ESR: EEF-SX0D271E4 (4.5 mOhm), EEF-SX0D271XE (6 mOhm), and EEF-SX0D271ER (9 mOhm). Lower ESR enables higher ripple current handling. All are Active status.

Q: Does package height affect substitution compatibility? A: Package height does not affect electrical substitution. The 2917 (7343 Metric) footprint remains constant across all listed parts. Height variation (1.90mm to 4.20mm) impacts PCB assembly clearance and thermal management but does not prevent functional substitution. Verify PCB design clearance requirements before selection.

Q: Are all substitute parts RoHS and REACH compliant? A: All substitute parts listed carry ROHS3 Compliant and REACH Unaffected certifications. The original EEF-UE0D271R does not specify compliance status due to obsolete status.

Q: Why is EEF-SX0D271R listed if it is "Not For New Designs"? A: EEF-SX0D271R is included for reference in legacy system maintenance and repair scenarios. For new product development, select from Active status alternatives: EEF-CX0D271XR, EEF-SX0D271E4, EEF-SX0D271XE, or EEF-SX0D271ER.

Q: What is the advantage of lower ESR in substitute parts? A: Lower ESR reduces heat generation and improves ripple current capacity. EEF-SX0D271E4 (4.5 mOhm) supports 8.5 A @ 100 kHz versus the original specification of 12 mOhm. This is beneficial in high-frequency switching applications but does not affect basic capacitance or voltage performance.

Q: Can I use EEF-CX0D271R as a substitute? A: EEF-CX0D271R shares package, capacitance, tolerance, and operating temperature range. However, voltage rating is not specified in available data. Confirm this part meets your 2 V voltage requirement before selection. If voltage specification is confirmed, this Active status part is acceptable.