4SW180M2.9X7.3 Equivalent & Substitute Parts

Part Overview

The 4SW180M2.9X7.3 is a 180 µF aluminum polymer capacitor manufactured by Rubycon in the PC-CON and SW series. This surface mount component is rated for 4 V with an ESR of 9 mOhm and a lifetime specification of 2000 hours at 105°C. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line.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 applications requiring continued support, maintenance, or where existing inventory requires replenishment with compatible alternatives.

Substiute Parts

4SW180M2.9X7.3

RubyconIn Stock: 11414SW180M2.9X7.3 Datasheet

Current PartRFQ

EEF-CX0J181R

Panasonic Electronic ComponentsIn Stock: 9665EEF-CX0J181R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4SW180M2.9X7.3 is determined by the following critical parameters:

• Capacitance Value: Must be 180 µF (±20% tolerance)
• Package / Case: Must be 2917 (7343 Metric) for mechanical and electrical compatibility
• Mounting Type: Must be Surface Mount
• Type: Must be Aluminum Polymer
• Operating Temperature Range: Must support -55°C ~ 105°C minimum
• Voltage Rating: Must be equal to or greater than 4 V
• Lifetime Specification: Must meet or exceed 2000 Hrs @ 105°C
• Compliance: Must maintain ROHS3 compliance

The substitute part EEF-CX0J181R meets all substitution criteria. While it features a higher voltage rating (6.3 V) and different ESR (15 mOhm) and height specifications, these parameters fall within acceptable ranges for direct substitution in applications designed for the 4SW180M2.9X7.3.

Parameter Comparison

Engineering Selection Recommendations

The EEF-CX0J181R from Panasonic is a direct substitute for the 4SW180M2.9X7.3. The substitute part maintains identical capacitance, tolerance, operating temperature range, lifetime specification, and package dimensions. Both components are ROHS3 compliant and suitable for general purpose applications.

The EEF-CX0J181R carries an "Active" product status, ensuring continued availability and manufacturer support, whereas the 4SW180M2.9X7.3 is designated "Not For New Designs." The higher voltage rating (6.3 V versus 4 V) of the substitute part provides additional design margin and is compatible with circuits designed for the original 4 V component. The increased ESR (15 mOhm versus 9 mOhm) and reduced height (1.90mm versus 2.90mm) are within acceptable tolerances for general purpose applications and may offer advantages in thermal management and PCB space optimization.

Frequently Asked Questions (FAQ)

Q: Can the EEF-CX0J181R replace the 4SW180M2.9X7.3 in existing designs?

A: Yes. Both components share identical capacitance (180 µF), tolerance (±20%), package (2917 / 7343 Metric), operating temperature range (-55°C ~ 105°C), and lifetime specification (2000 Hrs @ 105°C). The substitute part's higher voltage rating (6.3 V) is compatible with 4 V applications.

Q: What are the differences between these two parts?

A: The primary differences are voltage rating (4 V versus 6.3 V), ESR (9 mOhm versus 15 mOhm), seated height (2.90mm versus 1.90mm), and product status (Not For New Designs versus Active). These differences do not prevent substitution in general purpose applications.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both the 4SW180M2.9X7.3 and EEF-CX0J181R are ROHS3 compliant and REACH unaffected.

Q: Will the reduced height of the substitute part affect PCB assembly?

A: No. The EEF-CX0J181R's reduced seated height (1.90mm) is compatible with PCB designs accommodating the original part's height (2.90mm). The footprint dimensions (7.30mm L x 4.30mm W) remain identical.

Q: Why is the original part marked "Not For New Designs"?

A: This designation indicates the 4SW180M2.9X7.3 has been superseded in Rubycon's product line. The EEF-CX0J181R from Panasonic is an active alternative suitable for both replacement and new applications.