Rubycon 4SW220M2.9X7.3 Equivalent & Substitute Parts

Part Overview

The Rubycon 4SW220M2.9X7.3 is a 220 µF aluminum polymer capacitor rated at 4 V with a maximum height of 2.90mm in a 2917 (7343 Metric) surface mount package. This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Finding equivalent substitute parts is necessary for legacy system maintenance, repair operations, and applications where existing designs must be sustained with available inventory.

Substiute Parts

4SW220M2.9X7.3

RubyconIn Stock: 8914SW220M2.9X7.3 Datasheet

Current PartRFQ

EEF-CX0J221R

Panasonic Electronic ComponentsIn Stock: 50836EEF-CX0J221R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Rubycon 4SW220M2.9X7.3 is determined by the following critical parameters:

Electrical Parameters:

• Capacitance value: 220 µF (must match exactly)
• Tolerance: ±20% (must match)
• Voltage rating: Minimum 4 V (substitute may exceed this rating)
• Type: Aluminum polymer capacitor (must match)
• Operating temperature range: -55°C ~ 105°C (must match or exceed)
• Lifetime specification: 2000 Hrs @ 105°C (must match or exceed)

Mechanical Parameters:

• Package / Case: 2917 (7343 Metric) (must match)
• Height - Seated (Max): 2.90mm (substitute must not exceed this dimension for PCB clearance compatibility)
• Mounting Type: Surface Mount (must match)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (must match)

The Panasonic EEF-CX0J221R meets all electrical and mechanical substitution criteria while maintaining compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

The Panasonic EEF-CX0J221R is a direct functional substitute for the Rubycon 4SW220M2.9X7.3 based on the following engineering criteria:

Electrical Compatibility: Both components share identical capacitance (220 µF), tolerance (±20%), and thermal lifetime specifications (2000 Hrs @ 105°C). The Panasonic part's higher voltage rating (6.3 V versus 4 V) provides additional design margin and is fully compatible with circuits designed for the original 4 V component.

Mechanical Compatibility: Both parts use the identical 2917 (7343 Metric) package footprint. The Panasonic substitute has a lower maximum seated height (1.90mm versus 2.90mm), which provides improved PCB clearance compatibility and eliminates any height-related placement constraints.

Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for existing applications.

Product Status: The Panasonic EEF-CX0J221R carries Active product status, ensuring long-term availability and supply chain stability compared to the Not For New Designs status of the original Rubycon component.

Frequently Asked Questions (FAQ)

Q: Can the Panasonic EEF-CX0J221R be used as a direct replacement for the Rubycon 4SW220M2.9X7.3?

A: Yes. Both components have identical capacitance (220 µF), tolerance (±20%), package footprint (2917 / 7343 Metric), and thermal specifications (2000 Hrs @ 105°C). The Panasonic part's higher voltage rating (6.3 V) and lower ESR (15 mOhm) are compatible with the original design requirements.

Q: What is the difference in height between these two components?

A: The Rubycon 4SW220M2.9X7.3 has a maximum seated height of 2.90mm, while the Panasonic EEF-CX0J221R has a maximum seated height of 1.90mm. The Panasonic substitute is 1.00mm shorter, providing additional PCB clearance without affecting electrical performance.

Q: Does the higher voltage rating of the Panasonic part affect circuit operation?

A: No. A capacitor with a higher voltage rating (6.3 V) can be used in circuits designed for lower voltage ratings (4 V). The higher rating provides additional safety margin and does not alter the capacitive behavior at the circuit's operating voltage.

Q: Are both components RoHS compliant?

A: Yes. Both the Rubycon 4SW220M2.9X7.3 and Panasonic EEF-CX0J221R are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why is the Rubycon part marked as Not For New Designs?

A: This designation indicates the component has been superseded by the manufacturer and is no longer recommended for new product development. However, it remains suitable for legacy system maintenance and repair operations where component replacement is necessary.

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

A: The Panasonic EEF-CX0J221R has an ESR of 15 mOhm compared to the Rubycon part's 9 mOhm. This 6 mOhm difference is within acceptable tolerances for general-purpose applications and does not prevent functional substitution in standard circuit designs.