686KXM100M Equivalent & Substitute Parts

Part Overview

The 686KXM100M is a 68 µF, 100 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as Active product status and is designed for general purpose applications. The capacitor features a rated lifetime of 4000 hours at 105°C with an operating temperature range of -55°C to 105°C.

Substitute parts become necessary when the primary component reaches end-of-life inventory, when supply chain constraints occur, or when design requirements shift toward components with enhanced performance characteristics such as extended lifetime ratings or improved ripple current handling capabilities.

Substiute Parts

686KXM100M

Cornell Dubilier / Illinois CapacitorIn Stock: 1007686KXM100M Datasheet

Current PartRFQ

UPM2A680MPD

NichiconIn Stock: 1238UPM2A680MPD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 686KXM100M is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Capacitance: 68 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Operating Temperature Range: -55°C to 105°C (exact match required)

Mechanical Equivalence Criteria:

• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can (exact match required)
• Lead Spacing: 0.197" (5.00mm) (exact match required)
• Size / Dimension: 0.394" Dia (10.00mm) (exact match required)
• Height - Seated (Max): 1.063" (27.00mm) (exact match required)

Compliance Criteria:

• RoHS Status: ROHS3 Compliant (exact match required)

The substitute part UPM2A680MPD manufactured by Nichicon meets all electrical and mechanical equivalence criteria. This part maintains identical capacitance, voltage rating, tolerance, polarization, operating temperature range, and physical dimensions. Both components are ROHS3 compliant and utilize through-hole radial can packaging with identical lead spacing and height specifications.

Parameter Comparison

Engineering Selection Recommendations

686KXM100M (Cornell Dubilier / Illinois Capacitor):

• Product Status: Active
• Recommended for new designs requiring general purpose aluminum electrolytic capacitor functionality
• ROHS3 compliant for environmental regulatory compliance
• Suitable for applications where 4000-hour lifetime at 105°C meets design requirements

UPM2A680MPD (Nichicon):

• Product Status: Not For New Designs
• Electrical and mechanical equivalence confirmed for direct substitution in existing designs
• Extended lifetime rating of 5000 hours at 105°C provides enhanced reliability margin
• Superior ripple current handling: 500 mA @ 120 Hz and 795 mA @ 10 kHz compared to 212 mA and 530 mA respectively
• Lower impedance of 210 mOhms provides improved high-frequency performance
• AEC-Q200 automotive qualification indicates enhanced quality and reliability standards
• ROHS3 compliant; REACH Affected status requires supply chain verification for specific applications
• Suitable for direct substitution in existing production where component inventory requires replenishment

Frequently Asked Questions (FAQ)

Q: Can UPM2A680MPD directly replace 686KXM100M in existing circuit designs?

A: Yes. Both components share identical electrical specifications (68 µF, 100 V, ±20% tolerance, -55°C to 105°C operating range) and mechanical dimensions (0.394" diameter, 1.063" height, 5.00mm lead spacing, radial can package, through-hole mounting). Direct substitution is electrically and mechanically compatible.

Q: What are the differences between these two parts?

A: The primary differences are: (1) Manufacturer: Cornell Dubilier versus Nichicon; (2) Product Status: 686KXM100M is Active while UPM2A680MPD is Not For New Designs; (3) Lifetime: 4000 hours versus 5000 hours at 105°C; (4) Ripple Current: 212 mA versus 500 mA at 120 Hz; (5) Impedance: 594 mOhms versus 210 mOhms; (6) Applications: General Purpose versus Automotive; (7) Compliance: UPM2A680MPD carries AEC-Q200 automotive qualification.

Q: Which part should be selected for new product designs?

A: The 686KXM100M is recommended for new designs. It carries Active product status, indicating ongoing manufacturer support and availability. The UPM2A680MPD is designated Not For New Designs and should be reserved for replacement and repair of existing equipment.

Q: Are both parts RoHS compliant?

A: Yes. Both 686KXM100M and UPM2A680MPD are ROHS3 compliant. The UPM2A680MPD carries REACH Affected status, requiring verification of supply chain compliance for specific end-use applications.

Q: What does the lead spacing specification mean for PCB design?

A: Lead spacing of 0.197" (5.00mm) indicates the distance between the two radial leads on the component. Both parts share this identical specification, ensuring compatibility with existing PCB footprints and through-hole mounting patterns.

Q: Why does UPM2A680MPD have superior ripple current ratings?

A: The ripple current specifications reflect the component's ability to handle AC current superimposed on DC voltage without exceeding temperature limits. UPM2A680MPD specifications (500 mA @ 120 Hz, 795 mA @ 10 kHz) indicate enhanced thermal performance and internal design optimization compared to 686KXM100M (212 mA @ 120 Hz, 530 mA @ 100 kHz).

Q: What is impedance and why is it lower in UPM2A680MPD?

A: Impedance represents the total opposition to current flow at a specific frequency. The lower impedance of 210 mOhms in UPM2A680MPD versus 594 mOhms in 686KXM100M indicates superior high-frequency performance and reduced voltage drop across the component during transient conditions.

Q: Can these parts be used interchangeably in automotive applications?

A: UPM2A680MPD carries AEC-Q200 automotive qualification, indicating compliance with automotive reliability and quality standards. While 686KXM100M is electrically and mechanically compatible, it lacks automotive-specific qualification. For automotive applications, UPM2A680MPD is the appropriate selection.