Equivalent & Substitute Parts for 686UVK010MEW

Part Overview

The 686UVK010MEW is a 68 µF, 10 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the UVK series. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement. The part is designed for general-purpose applications requiring surface-mount radial can packaging with SMD configuration.

Substiute Parts

686UVK010MEW

Cornell Dubilier / Illinois CapacitorIn Stock: 717686UVK010MEW Datasheet

Current PartRFQ

UUD1A680MCL1GS

NichiconIn Stock: 2608UUD1A680MCL1GS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 686UVK010MEW is determined by strict adherence to the following electrical and mechanical parameters:

Primary Matching Criteria:

• Capacitance value of 68 µF (exact match required)
• Voltage rating of 10 V (exact match required)
• Tolerance of ±20% (exact match acceptable; tighter tolerance acceptable)
• Polar aluminum electrolytic construction
• Surface-mount radial can package configuration

Physical Compatibility Criteria:

• Diameter of 0.248" (6.30mm) for component body
• Surface mount land size of 0.260" L x 0.260" W (6.60mm x 6.60mm) for PCB pad layout
• Height compatibility within assembly constraints

Environmental Criteria:

• Moisture Sensitivity Level 1 (unlimited handling)
• Operating temperature range compatibility

The substitute part UUD1A680MCL1GS meets all primary electrical specifications and physical compatibility requirements. The part maintains identical capacitance, voltage rating, tolerance, polarization, and package configuration. Physical dimensions and land sizes are identical, ensuring direct PCB compatibility without layout modifications.

Parameter Comparison

Engineering Selection Recommendations

The UUD1A680MCL1GS from Nichicon is a direct electrical and mechanical substitute for the obsolete 686UVK010MEW. Selection of this alternative is based on the following engineering factors:

Electrical Equivalence: The substitute maintains identical capacitance (68 µF), voltage rating (10 V), and tolerance (±20%). Both components are polar aluminum electrolytic capacitors with identical polarization requirements.

Physical Compatibility: The substitute features identical package configuration (Radial, Can - SMD), body diameter (0.248" / 6.30mm), and surface mount land size (0.260" x 0.260" / 6.60mm x 6.60mm). The maximum seated height of the substitute (0.240" / 6.10mm) is 0.008" taller than the original part (0.232" / 5.90mm), which is within typical PCB assembly tolerances and does not preclude direct substitution.

Performance Enhancement: The substitute demonstrates superior electrical performance characteristics. Ripple current capability is significantly higher at both low frequency (115 mA @ 120 Hz versus 50 mA) and high frequency (230 mA @ 100 kHz versus 75 mA @ 10 kHz). Impedance is substantially lower (440 mOhms versus 7.31 Ohm ESR), indicating improved performance in filtering and energy storage applications.

Compliance and Certification: The substitute holds AEC-Q200 automotive qualification and ROHS3 compliance, providing enhanced reliability assurance. The original part carries no specified ratings or compliance certifications.

Availability and Supply: The substitute is in active production with significantly higher inventory availability (2510 pieces versus 637 pieces), ensuring long-term procurement reliability.

Temperature Considerations: The substitute operates over a narrower maximum temperature range (-55°C to 105°C versus -40°C to 125°C). Applications requiring operation above 105°C must be evaluated separately. The substitute provides extended lifetime rating (2000 hours @ 105°C versus 1000 hours @ 125°C) at its specified temperature.

Frequently Asked Questions (FAQ)

Q: Can the UUD1A680MCL1GS be used as a direct replacement for the 686UVK010MEW without PCB modifications?

A: Yes. Both components share identical electrical specifications (68 µF, 10 V, ±20% tolerance), package configuration (Radial, Can - SMD), body diameter (6.30mm), and surface mount land size (6.60mm x 6.60mm). No PCB layout changes are required for direct substitution.

Q: What is the significance of the 0.008" height difference between the two parts?

A: The substitute (0.240" maximum height) is slightly taller than the original (0.232" maximum height). This difference is within standard PCB assembly tolerances and does not affect component placement, soldering, or clearance in typical applications. Height-critical applications should verify clearance independently.

Q: Are there any temperature-related limitations when substituting the UUD1A680MCL1GS?

A: The substitute operates to a maximum temperature of 105°C, compared to the original part's 125°C maximum. Applications requiring sustained operation above 105°C must be evaluated for thermal performance. The substitute provides extended lifetime (2000 hours @ 105°C) at its rated temperature, which may offset the lower maximum temperature in many applications.

Q: How do the ripple current ratings compare?

A: The substitute has significantly higher ripple current capability. At 120 Hz, the substitute handles 115 mA compared to the original's 50 mA. At high frequency (100 kHz), the substitute handles 230 mA compared to the original's 75 mA @ 10 kHz. This superior performance allows the substitute to handle higher AC current stress in filtering and energy storage circuits.

Q: What does the AEC-Q200 rating on the substitute indicate?

A: AEC-Q200 is an automotive qualification standard that certifies the component for automotive applications. The original part carries no specified ratings. This certification on the substitute provides additional reliability assurance for applications requiring automotive-grade components.

Q: Is the substitute RoHS compliant?

A: Yes. The substitute is ROHS3 compliant. The original part's RoHS status is not specified in the provided data.

Q: What is the difference in ESR and impedance between the two parts?

A: The original part specifies ESR of 7.31 Ohm @ 120Hz. The substitute specifies impedance of 440 mOhms. The substitute's lower impedance indicates superior performance in high-frequency filtering and reduced voltage ripple in power supply applications.

Q: Are there any REACH compliance differences?

A: Yes. The original part is listed as REACH Unaffected, while the substitute is REACH Affected. Applications subject to REACH regulations should verify the substitute's compliance status with their regulatory requirements.

Q: What packaging format is the substitute supplied in?

A: The substitute is supplied in Tape & Reel (TR) format, which is standard for automated PCB assembly processes. The original part's packaging format is not specified.

Q: Why is the original part obsolete?

A: The 686UVK010MEW is classified as obsolete by the manufacturer. The UUD1A680MCL1GS provides a functionally equivalent alternative from an active manufacturer with superior performance characteristics and higher availability.