EEF-UD0E271LE Equivalent & Substitute Parts

Part Overview

The EEF-UD0E271LE is a 270 µF, 2.5 V aluminum polymer capacitor manufactured by Panasonic Electronic Components in the 2917 (7343 Metric) surface mount 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-UD0E271LE

Panasonic Electronic ComponentsIn Stock: 1124EEF-UD0E271LE Datasheet

Current PartRFQ

EEF-SX0E271E7

Panasonic Electronic ComponentsIn Stock: 1230EEF-SX0E271E7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EEF-UD0E271LE is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance value: 270 µF (exact match required)
• Voltage rating: 2.5 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package type: 2917 (7343 Metric) (exact match required)
• Dielectric type: Aluminum polymer (exact match required)
• Mounting configuration: Surface mount (exact match required)

The substitute part EEF-SX0E271E7 meets all mandatory equivalence criteria. This part maintains identical electrical specifications for capacitance, voltage, and tolerance while offering improved performance characteristics in ESR and lifetime rating. Both parts share the same physical footprint and land pattern, enabling direct PCB-level substitution without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

The EEF-SX0E271E7 is the direct substitute for the obsolete EEF-UD0E271LE. Selection of this substitute is supported by the following factors:

The substitute part maintains active product status with Panasonic Electronic Components, ensuring long-term availability and supply chain stability. The EEF-SX0E271E7 carries ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing and distribution. Both parts are manufactured in the same 2917 (7343 Metric) package with identical land patterns, permitting direct substitution at the PCB assembly level without design modification.

The substitute part offers enhanced performance characteristics including reduced ESR (7 mOhm versus 9 mOhm), doubled lifetime rating (2000 hours versus 1000 hours at 105°C), and increased ripple current capacity (7 A versus 3.4 A at 100 kHz). The lower seated height (2.00 mm versus 3.00 mm) of the substitute may provide additional design flexibility in space-constrained applications. The extended operating temperature range (-55°C to 105°C) provides broader environmental compatibility compared to the original part.

Frequently Asked Questions (FAQ)

Q: Can the EEF-SX0E271E7 be used as a direct replacement for the EEF-UD0E271LE in existing designs?

A: Yes. Both parts share identical electrical specifications (270 µF, 2.5 V, ±20% tolerance) and the same 2917 (7343 Metric) package footprint. No PCB layout modifications are required for substitution.

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

A: The substitute part offers improved performance: lower ESR (7 mOhm versus 9 mOhm), extended lifetime (2000 hours versus 1000 hours at 105°C), higher ripple current rating (7 A versus 3.4 A at 100 kHz), lower seated height (2.00 mm versus 3.00 mm), and broader operating temperature range (-55°C to 105°C versus -40°C to 105°C). The substitute part also carries active product status and ROHS3 compliance.

Q: Are there any compatibility concerns with the substitute part?

A: No compatibility concerns exist. Both parts are surface mount components in the same package with identical land patterns. The electrical characteristics remain equivalent across all specified parameters.

Q: Why is the original part listed as obsolete?

A: The EEF-UD0E271LE is classified as obsolete by Panasonic Electronic Components. The EEF-SX0E271E7 from the active SP-Cap SX series provides equivalent functionality with enhanced performance and current manufacturing support.

Q: Does the substitute part meet current regulatory requirements?

A: Yes. The EEF-SX0E271E7 is ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component distribution and use.