Rubycon 10SWZ47MR25 Equivalent & Substitute Parts

Part Overview

The Rubycon 10SWZ47MR25 is a 47 µF, 10 V aluminum polymer surface mount capacitor in the 2917 (7343 Metric) package. This component is classified as Obsolete, making identification of suitable equivalent parts essential for ongoing production support and design continuity. The part delivers 25 mOhm ESR with a 2000-hour lifetime rating at 105°C, suitable for general-purpose applications requiring stable capacitance and low impedance characteristics.

Substiute Parts

10SWZ47MR25

RubyconIn Stock: 86310SWZ47MR25 Datasheet

Current PartRFQ

EEF-CS1A470R

Panasonic Electronic ComponentsIn Stock: 9342EEF-CS1A470R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Rubycon 10SWZ47MR25 is determined by strict equivalence across the following parameters:

• Capacitance Value: 47 µF (exact match required)
• Voltage Rating: 10 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)
• Physical Dimensions: 7.30 mm L × 4.30 mm W (exact match required for land pattern compatibility)
• Type: Aluminum Polymer (exact match required for electrical performance)
• Operating Temperature Range: -55°C to 105°C (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required for regulatory compliance)

Parameters that may vary within acceptable engineering limits for substitution include ESR, ripple current capability, and seated height, provided the substitute meets or exceeds the performance requirements of the original design.

Parameter Comparison

Engineering Selection Recommendations

The Panasonic EEF-CS1A470R serves as a direct functional equivalent to the Rubycon 10SWZ47MR25 based on matching capacitance, voltage rating, tolerance, package, and operating temperature specifications. Both components are ROHS3 compliant and rated for 2000-hour lifetime at 105°C.

The Panasonic substitute exhibits higher ESR (40 mOhm versus 25 mOhm) and greater ripple current capability (3.2 A versus 1.8 A at 100 kHz). The reduced seated height (1.20 mm versus 1.90 mm) provides additional clearance margin in space-constrained applications. The Panasonic part's "Not For New Designs" status indicates it remains available for legacy system support, whereas the Rubycon part is fully obsolete.

Selection between these parts depends on circuit requirements for ESR performance and ripple current handling. Applications with stringent ESR specifications may require design review. Applications benefiting from higher ripple current capacity or reduced height clearance will find the Panasonic substitute advantageous.

Frequently Asked Questions (FAQ)

Q: Can the Panasonic EEF-CS1A470R be used as a direct replacement for the Rubycon 10SWZ47MR25?

A: Yes, the Panasonic EEF-CS1A470R meets all critical electrical and mechanical parameters for direct substitution. Both parts share identical capacitance (47 µF), voltage rating (10 V), tolerance (±20%), package (2917 / 7343 Metric), and operating temperature range (-55°C to 105°C). PCB land patterns and mounting procedures remain unchanged.

Q: What is the significance of the ESR difference between these parts?

A: The Rubycon part specifies 25 mOhm ESR while the Panasonic substitute specifies 40 mOhm ESR. ESR affects impedance characteristics and heat dissipation under ripple current conditions. Circuits designed with the lower ESR specification should be evaluated to confirm the higher ESR does not degrade performance. Most general-purpose applications tolerate this variance.

Q: Does the height difference affect PCB assembly?

A: The Panasonic part has a maximum seated height of 1.20 mm compared to 1.90 mm for the Rubycon part. This 0.70 mm reduction provides additional clearance in space-constrained designs. No PCB redesign is required; the substitute occupies less vertical space than the original component.

Q: Are both parts compliant with current regulatory standards?

A: Both the Rubycon 10SWZ47MR25 and Panasonic EEF-CS1A470R are ROHS3 compliant. Both carry REACH Unaffected status and EAR99 ECCN classification. No regulatory barriers exist to substitution.

Q: Why is the Rubycon part listed as Obsolete while the Panasonic is Not For New Designs?

A: Obsolete status indicates the Rubycon part is no longer manufactured or available from inventory. Not For New Designs indicates the Panasonic part remains available for legacy support but is not recommended for new product development. For ongoing production of existing designs, the Panasonic substitute provides continuity of supply.

Q: What is the ripple current significance?

A: The Panasonic substitute supports 3.2 A ripple current at 100 kHz compared to 1.8 A for the Rubycon part. Higher ripple current capability indicates the substitute can handle greater AC stress without exceeding temperature limits. This represents an improvement in performance margin for applications with significant ripple current demands.