Equivalent & Substitute Parts for 4SW150M2.7X7.3

Part Overview

The Rubycon 4SW150M2.7X7.3 is a 150 µF aluminum polymer capacitor rated at 4 V with a surface mount package (2917/7343 Metric). This component is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line.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 applications requiring continued supply, maintenance of existing designs, or when original stock becomes unavailable.

Substiute Parts

4SW150M2.7X7.3

RubyconIn Stock: 9434SW150M2.7X7.3 Datasheet

Current PartRFQ

EEF-SX0J151ER

Panasonic Electronic ComponentsIn Stock: 30687EEF-SX0J151ER Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4SW150M2.7X7.3 is determined by the following critical parameters:

• Capacitance Value: 150 µF (must match exactly)
• Package / Case: 2917 (7343 Metric) (must match for PCB compatibility)
• Mounting Type: Surface Mount (must match)
• Voltage Rating: Minimum 4 V (substitute may exceed rated voltage)
• ESR: 9 mOhm (electrical performance requirement)
• Lifetime @ Temperature: 2000 Hrs @ 105°C (reliability specification)
• Operating Temperature Range: -55°C ~ 105°C (environmental compatibility)
• Type: Aluminum Polymer (material specification)

The Panasonic EEF-SX0J151ER meets all substitution criteria with identical capacitance, package, mounting type, ESR, lifetime rating, and operating temperature range. The substitute part features a higher voltage rating (6.3 V vs. 4 V), which is acceptable for direct substitution in applications designed for the original 4 V component.

Parameter Comparison

Engineering Selection Recommendations

The Panasonic EEF-SX0J151ER is a direct functional substitute for the Rubycon 4SW150M2.7X7.3. Selection is based on the following factors:

• Product Status: The original Rubycon part is Not For New Designs, while the Panasonic substitute is Active, ensuring continued availability and manufacturer support.
• Compliance: Both parts are ROHS3 Compliant and REACH Unaffected, meeting regulatory requirements.
• Electrical Equivalence: Identical capacitance (150 µF), ESR (9 mOhm), lifetime rating (2000 Hrs @ 105°C), and operating temperature range ensure electrical performance parity.
• Physical Compatibility: Both parts use the 2917 (7343 Metric) package with surface mount configuration. The substitute has a lower maximum seated height (2.00 mm vs. 2.70 mm), which is advantageous for space-constrained applications.
• Voltage Margin: The substitute's 6.3 V rating exceeds the original 4 V specification, providing additional safety margin without affecting circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the Panasonic EEF-SX0J151ER replace the Rubycon 4SW150M2.7X7.3 in existing designs?

A: Yes. The substitute part meets all critical electrical and mechanical parameters. Identical capacitance, ESR, lifetime rating, and operating temperature range ensure functional equivalence. The higher voltage rating (6.3 V) is compatible with circuits designed for 4 V operation.

Q: Are there physical compatibility concerns?

A: No. Both parts use the 2917 (7343 Metric) package with identical length (7.30 mm) and width (4.30 mm). The substitute has a lower maximum height (2.00 mm vs. 2.70 mm), which may improve PCB layout flexibility.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the original and substitute parts are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements.

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

A: This designation indicates the Rubycon part has been superseded in the manufacturer's product line. The Panasonic substitute is Active and recommended for new applications requiring this capacitance and voltage specification.

Q: What is the significance of identical ESR values?

A: ESR (Equivalent Series Resistance) of 9 mOhm directly affects ripple current handling and thermal performance. Identical ESR ensures the substitute part will perform identically in high-frequency applications and under ripple current stress.

Q: Are there any thermal performance differences?

A: Both parts are rated for 2000 hours at 105°C with identical operating temperature ranges (-55°C ~ 105°C). Thermal performance is equivalent.