Equivalent & Substitute Parts for 4SW270M

Part Overview

The 4SW270M is a 270 µF, 4 V aluminum polymer capacitor manufactured by Rubycon in the 2917 (7343 Metric) surface mount package. This component is designed for general purpose applications requiring low ESR performance and extended operational life at elevated temperatures. The part is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

4SW270M

RubyconIn Stock: 7364SW270M Datasheet

Current PartRFQ

EEF-CX0G271R

Panasonic Electronic ComponentsIn Stock: 11387EEF-CX0G271R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4SW270M is determined by strict alignment of the following electrical and mechanical parameters:

• Capacitance value: 270 µF (exact match required)
• Voltage rating: 4 V (exact match required)
• Tolerance: ±20% (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required for PCB compatibility)
• Mounting type: Surface Mount (exact match required)
• Operating temperature range: -55°C ~ 105°C (minimum requirement)
• Lifetime specification: 2000 Hrs @ 105°C (minimum requirement)
• Type: Aluminum Polymer (exact match required)

The EEF-CX0G271R from Panasonic Electronic Components meets all substitution criteria. While ESR and ripple current specifications differ from the original part, these variations remain within acceptable operational parameters for general purpose applications and do not compromise functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The EEF-CX0G271R is the qualified substitute for the obsolete 4SW270M. Both components maintain identical electrical specifications for capacitance, voltage rating, tolerance, and thermal performance. The substitute part carries active product status with confirmed availability, eliminating supply chain risk associated with the obsolete original component.

Both parts satisfy ROHS3 compliance requirements and maintain equivalent environmental certifications. The substitute component demonstrates superior ripple current handling capability (5.1 A versus 4.6 A at 100 kHz), providing additional operational margin in applications with variable current demands.

Physical compatibility is confirmed through identical package designation (2917 / 7343 Metric) and surface mount land pattern specifications, ensuring direct PCB layout compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the EEF-CX0G271R be used as a direct replacement for the 4SW270M?

A: Yes. Both components share identical capacitance (270 µF), voltage rating (4 V), tolerance (±20%), package type (2917 / 7343 Metric), and thermal specifications (2000 Hrs @ 105°C). Physical footprint and electrical performance are compatible for direct substitution.

Q: What is the difference in ESR between these parts?

A: The 4SW270M specifies 9 mOhm ESR, while the EEF-CX0G271R specifies 15 mOhm ESR. This difference reflects manufacturing variations between manufacturers but does not affect functional compatibility in general purpose applications.

Q: Are there any package or mounting differences?

A: No. Both components use the 2917 (7343 Metric) surface mount package with identical land pattern dimensions (0.287" L x 0.169" W / 7.30mm x 4.30mm). PCB layout modifications are not required.

Q: What is the product status difference?

A: The 4SW270M is obsolete and no longer manufactured. The EEF-CX0G271R is active production, ensuring long-term availability and supply chain continuity.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting equivalent environmental and regulatory requirements.