Equivalent & Substitute Parts for 8SW68M

Part Overview

The Rubycon 8SW68M is a 68 µF, 8 V aluminum polymer capacitor in 2917 (7343 Metric) surface mount package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing production and maintenance applications. The part delivers 18 mOhm ESR with 2000 hours lifetime rating at 105°C, suitable for general-purpose applications requiring compact form factor and low impedance characteristics.

Substiute Parts

8SW68M

RubyconIn Stock: 8678SW68M Datasheet

Current PartRFQ

EEF-CX1A680R

Panasonic Electronic ComponentsIn Stock: 15831EEF-CX1A680R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 8SW68M is determined by the following critical parameters:

• Capacitance Value: 68 µF (exact match required)
• Package Footprint: 2917 (7343 Metric) (physical compatibility)
• Mounting Type: Surface Mount (assembly compatibility)
• Voltage Rating: Minimum 8 V (equal or higher acceptable)
• Type: Aluminum Polymer (electrical characteristics)
• Operating Temperature Range: -55°C ~ 105°C (environmental compatibility)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)

The Panasonic EEF-CX1A680R qualifies as a substitute based on matching capacitance, package, mounting type, temperature range, and compliance status. The higher voltage rating (10 V) and increased ESR (40 mOhm) represent acceptable trade-offs for component availability.

Parameter Comparison

Engineering Selection Recommendations

The Panasonic EEF-CX1A680R serves as a direct substitute for the obsolete Rubycon 8SW68M in applications requiring 68 µF capacitance in 2917 package format. Both components maintain ROHS3 compliance and identical operating temperature specifications. The substitute part features higher voltage rating (10 V versus 8 V), providing additional design margin in voltage-constrained applications. The increased ESR (40 mOhm versus 18 mOhm) and higher ripple current capability (3.2 A versus 2.5 A) must be evaluated against specific circuit requirements. Both components are classified as not recommended for new designs, indicating limited long-term availability.

Frequently Asked Questions (FAQ)

Q: Can the Panasonic EEF-CX1A680R directly replace the Rubycon 8SW68M on existing PCBs?

A: Yes. Both components share identical 2917 (7343 Metric) package dimensions and surface mount land pattern, enabling direct PCB substitution without layout modification.

Q: What is the significance of the voltage rating difference (8 V versus 10 V)?

A: The substitute part's higher voltage rating (10 V) is compatible with 8 V circuit applications. The capacitor will operate safely at or below its rated voltage. No circuit modification is required.

Q: How does the ESR difference affect circuit performance?

A: The substitute part exhibits 40 mOhm ESR compared to the original 18 mOhm. This higher impedance may increase voltage ripple in high-frequency switching applications. Circuit simulation or testing is necessary to confirm acceptability in ripple-sensitive designs.

Q: Are both parts suitable for new product designs?

A: Both components carry product status designations discouraging new designs (Obsolete and Not For New Designs). For new development, consultation with component suppliers for current-generation aluminum polymer capacitors in equivalent specifications is recommended.

Q: What packaging formats are available for the substitute part?

A: The Panasonic EEF-CX1A680R is supplied in Tape & Reel (TR) format, standard for surface mount production assembly.