2SWZ270MR09 Equivalent & Substitute Parts

Part Overview

The 2SWZ270MR09 is a 270 µF, 2 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 equivalent series resistance and stable performance across extended temperature ranges. The part is currently obsolete, making identification of compatible substitute components essential for ongoing production support, repair operations, and design continuity.

Substiute Parts

2SWZ270MR09

RubyconIn Stock: 10092SWZ270MR09 Datasheet

Current PartRFQ

EEF-SX0D271ER

Panasonic Electronic ComponentsIn Stock: 11657EEF-SX0D271ER Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SWZ270MR09 is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 270 µF (exact match required)
• Voltage Rating: 2 V (exact match required)
• Package / Case: 2917 (7343 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Type: Aluminum Polymer (exact match required)
• ESR: 9 mOhm (exact match required for electrical performance)
• Lifetime @ Temperature: 2000 Hrs @ 105°C (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)
• Tolerance: ±20% (exact match required)

The Panasonic EEF-SX0D271ER meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The EEF-SX0D271ER is a direct functional equivalent to the 2SWZ270MR09. Both components meet identical electrical specifications for capacitance, voltage rating, ESR, lifetime, and operating temperature range. Both are ROHS3 compliant and REACH unaffected, ensuring regulatory alignment.

The primary distinction is product status: the 2SWZ270MR09 is obsolete, while the EEF-SX0D271ER is active and maintains current manufacturing support. The Panasonic substitute offers superior ripple current capability (6.3 A versus 3 A at 100 kHz) and is available in higher inventory quantities, providing enhanced supply chain reliability.

The maximum seated height difference of 0.004" (0.10 mm) is within typical PCB design tolerances for surface mount applications and does not preclude direct substitution.

Frequently Asked Questions (FAQ)

Q: Can the EEF-SX0D271ER be used as a direct replacement for the 2SWZ270MR09?

A: Yes. Both components share identical electrical specifications across all critical parameters: 270 µF capacitance, 2 V voltage rating, 9 mOhm ESR, 2000 Hrs @ 105°C lifetime, and -55°C ~ 105°C operating temperature range. Both use the 2917 (7343 Metric) surface mount package with identical land pattern dimensions.

Q: Are there any physical compatibility concerns?

A: The seated height differs by 0.004" (0.10 mm), with the Panasonic part measuring 0.079" maximum versus 0.075" for the Rubycon part. This variance is within standard PCB design tolerances for surface mount components and does not affect mechanical or electrical compatibility.

Q: What is the significance of the higher ripple current rating on the substitute?

A: The EEF-SX0D271ER supports 6.3 A ripple current at 100 kHz compared to 3 A for the original part. This represents enhanced thermal performance and provides additional design margin for applications with high-frequency ripple current demands. The substitute is suitable for all applications where the original part was specified.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the 2SWZ270MR09 and EEF-SX0D271ER are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations.

Q: Why is the Panasonic part listed as active while the Rubycon part is obsolete?

A: The 2SWZ270MR09 has been discontinued by Rubycon. The EEF-SX0D271ER remains in active production by Panasonic, ensuring ongoing availability and manufacturing support for new designs and production continuity.