ECQ-UBAF684KA Film Capacitor Equivalent & Substitute Parts

Part Overview

The ECQ-UBAF684KA is a 0.68 µF film capacitor rated for 300V AC operation, utilizing polypropylene (PP) metallized dielectric technology in a radial through-hole configuration. This component is designed for EMI and RFI suppression applications with an operating temperature range of -40°C to 110°C.

The ECQ-UBAF684KA carries a product status designation of "Not For New Designs," indicating that Panasonic Electronic Components has discontinued this model for new applications. Organizations currently utilizing this part in active designs or requiring replacement units for existing equipment must identify functionally equivalent alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

ECQ-UBAF684KA

Panasonic Electronic ComponentsIn Stock: 810ECQ-UBAF684KA Datasheet

Current PartRFQ

ECQ-UBAF684K

Panasonic Electronic ComponentsIn Stock: 1350ECQ-UBAF684K Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-UBAF684KA is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 0.68 µF
• Capacitance tolerance: ±10%
• Voltage rating (AC): 300V
• Dielectric material: Polypropylene (PP), Metallized

Mechanical Parameters:

• Mounting type: Through Hole
• Package configuration: Radial
• Lead spacing: 0.886" (22.50mm)
• Physical dimensions: 1.024" L x 0.630" W (26.00mm x 16.00mm)
• Maximum seated height: 0.925" (23.50mm)

Environmental & Compliance Parameters:

• Operating temperature range: -40°C ~ 110°C
• RoHS3 compliance
• Application classification: EMI, RFI Suppression (X1 rating)

Parts meeting all of these specifications are classified as direct parametric equivalents and may be substituted without circuit redesign or board layout modification.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-UBAF684K is a direct parametric equivalent to the ECQ-UBAF684KA. Both components share identical electrical specifications, mechanical dimensions, and compliance certifications. The ECQ-UBAF684K is suitable for direct substitution in applications currently specified for the ECQ-UBAF684KA.

Both parts carry "Not For New Designs" product status from Panasonic Electronic Components. For new circuit designs, evaluation of current-generation film capacitor alternatives within the ECQUB series or other active product lines is recommended to ensure long-term component availability and supply chain continuity.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications. The X1 rating classification confirms suitability for EMI and RFI suppression in the specified voltage and temperature operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-UBAF684K be used as a direct replacement for the ECQ-UBAF684KA?

A: Yes. The ECQ-UBAF684K is a parametric equivalent with identical capacitance (0.68 µF), voltage rating (300V AC), tolerance (±10%), dielectric material (polypropylene metallized), operating temperature range (-40°C to 110°C), and physical dimensions. No circuit modification or board layout change is required.

Q: Are there any differences in the physical footprint between these parts?

A: No. Both parts have identical dimensions: 1.024" L x 0.630" W (26.00mm x 16.00mm), maximum seated height of 0.925" (23.50mm), and lead spacing of 0.886" (22.50mm). Both use radial through-hole mounting with PC pin termination.

Q: What is the significance of the "Not For New Designs" status?

A: This designation indicates that Panasonic Electronic Components has discontinued these models for new applications. While both parts remain functionally equivalent and suitable for replacement in existing designs, new circuit designs should consider current-generation alternatives to ensure long-term availability and supply chain stability.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the ECQ-UBAF684KA and ECQ-UBAF684K are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8532.25.0020. Both carry X1 ratings for EMI and RFI suppression applications.

Q: What is the operating temperature range for these capacitors?

A: Both parts operate across a temperature range of -40°C to 110°C, suitable for industrial and commercial applications with moderate thermal variation.

Q: Are these parts suitable for AC or DC applications?

A: These parts are rated for 300V AC operation. No DC voltage rating is specified. Application in AC circuits, particularly EMI and RFI suppression, is the intended use case.