EEC-RF0H684 Equivalent & Substitute Parts

Part Overview

The EEC-RF0H684 is a 680 mF supercapacitor (EDLC) rated at 5.5 V with radial, can-style through-hole termination. Manufactured by Panasonic Electronic Components, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

EEC-RF0H684

Panasonic Electronic ComponentsIn Stock: 1216EEC-RF0H684 Datasheet

Current PartRFQ

KW-5R5C684-R

Eaton - Electronics DivisionIn Stock: 6570KW-5R5C684-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EEC-RF0H684 is determined by strict equivalence across the following parameters:

• Capacitance Value: 680 mF (exact match required)
• Voltage Rating: 5.5 V (exact match required)
• Tolerance: -20%, +80% (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package Style: Radial, Can (exact match required)
• Lead Spacing: 0.197" (5.00 mm) (exact match required)
• Termination: PC Pins (exact match required)

The substitute part KW-5R5C684-R, manufactured by Eaton - Electronics Division, meets all these criteria. Variations in ESR, lifetime specifications, and operating temperature range do not disqualify substitution when the core electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

The KW-5R5C684-R is a direct functional substitute for the obsolete EEC-RF0H684. Both components share identical capacitance, voltage rating, tolerance, and mechanical footprint specifications. The substitute part is manufactured by Eaton - Electronics Division and carries active product status with ROHS3 compliance certification, providing improved regulatory alignment compared to the original part's RoHS Compliant status.

The KW-5R5C684-R exhibits a lower ESR value (30 Ohm @ 1kHz versus 40 Ohm) and an extended operating temperature range (-40°C ~ 85°C versus -25°C ~ 85°C), both of which represent performance improvements. The substitute part's maximum seated height is 0.348" (8.85 mm), which is 0.026" (0.65 mm) lower than the original, ensuring compatibility with existing PCB layouts and mechanical assemblies.

Frequently Asked Questions (FAQ)

Q: Can the KW-5R5C684-R be used as a direct replacement for the EEC-RF0H684 in existing designs?

A: Yes. Both parts share identical capacitance (680 mF), voltage rating (5.5 V), tolerance (-20%, +80%), lead spacing (0.197" / 5.00 mm), and radial can package style. The substitute part's lower ESR and extended temperature range do not introduce compatibility issues.

Q: What is the significance of the ESR difference between the two parts?

A: The KW-5R5C684-R has an ESR of 30 Ohm @ 1kHz, compared to 40 Ohm for the EEC-RF0H684. Lower ESR indicates reduced internal resistance and improved performance characteristics. This difference does not prevent substitution.

Q: Are there any height clearance concerns when substituting the KW-5R5C684-R?

A: The KW-5R5C684-R has a maximum seated height of 0.348" (8.85 mm), which is 0.026" (0.65 mm) lower than the original EEC-RF0H684 at 0.374" (9.50 mm). This dimensional difference improves PCB clearance and does not create installation conflicts.

Q: What is the difference in RoHS compliance between the two parts?

A: The EEC-RF0H684 carries RoHS Compliant certification, while the KW-5R5C684-R carries ROHS3 Compliant certification. ROHS3 represents an updated compliance standard and does not affect functional substitution.

Q: Does the extended operating temperature range of the KW-5R5C684-R affect substitution suitability?

A: No. The KW-5R5C684-R operates from -40°C ~ 85°C, compared to -25°C ~ 85°C for the original part. The extended lower temperature limit represents an improvement and does not introduce compatibility concerns for applications within the original temperature range.