BF074D0684K Equivalent & Substitute Parts

Part Overview

The BF074D0684K is a 0.68 µF film capacitor manufactured by KYOCERA AVX, rated for 63V DC operation with ±10% tolerance. This component features a polyester metallized dielectric in a radial through-hole package and is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for ongoing production support, maintenance, and design continuity.

Substiute Parts

BF074D0684K

KYOCERA AVXIn Stock: 882BF074D0684K Datasheet

Current PartRFQ

B32529C0684J000

EPCOS - TDK ElectronicsIn Stock: 6908B32529C0684J000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BF074D0684K is determined by strict equivalence across the following critical parameters:

• Capacitance Value: Must be 0.68 µF (no deviation)
• Voltage Rating: Must meet or exceed 63V DC and 40V AC ratings
• Dielectric Type: Polyester metallized film construction
• Mounting Configuration: Through-hole radial package with PC pin termination
• Lead Spacing: 0.200" (5.08mm) or compatible spacing for PCB layout
• Operating Temperature: Must support -55°C to 100°C minimum range

The B32529C0684J000 qualifies as a direct substitute based on matching capacitance, voltage ratings, dielectric material, mounting type, and termination style. Tolerance improvement (±5% vs. ±10%) and extended temperature range (-55°C to 125°C) provide enhanced performance margins without compromising compatibility.

Parameter Comparison

Engineering Selection Recommendations

The B32529C0684J000 is the qualified substitute for the BF074D0684K based on the following engineering criteria:

Functional Equivalence: Both components share identical capacitance (0.68 µF) and voltage ratings (63V DC / 40V AC), ensuring direct electrical compatibility in circuit applications.

Product Status: The original BF074D0684K is obsolete with limited inventory availability. The B32529C0684J000 maintains active production status with substantial stock (6806 pcs), ensuring long-term supply chain reliability.

Compliance Advantage: The substitute part achieves ROHS3 compliance, whereas the original is non-compliant. This distinction is critical for applications subject to environmental regulations and modern procurement standards.

Performance Enhancement: The B32529C0684J000 provides tighter tolerance (±5% vs. ±10%) and extended operating temperature range (-55°C to 125°C vs. -55°C to 100°C), delivering improved circuit performance and thermal margin.

Physical Compatibility: Lead spacing differs marginally (0.197" vs. 0.200"), representing a 0.003" variance. This minor dimensional difference is within standard PCB layout tolerances for radial through-hole components and does not preclude direct substitution on existing circuit boards.

Frequently Asked Questions (FAQ)

Q: Can the B32529C0684J000 be used as a direct replacement for the BF074D0684K?

A: Yes. Both components are 0.68 µF film capacitors with identical 63V DC and 40V AC voltage ratings, polyester metallized dielectric construction, and radial through-hole mounting. The substitute part meets all electrical and mechanical requirements for direct substitution.

Q: What is the significance of the tolerance difference (±10% vs. ±5%)?

A: The substitute part's tighter tolerance (±5%) provides more precise capacitance values, reducing circuit performance variation. This is a performance improvement that does not compromise compatibility with designs specified for ±10% tolerance.

Q: Does the 0.003" lead spacing difference affect PCB compatibility?

A: No. The lead spacing variance (0.200" original vs. 0.197" substitute) falls within standard manufacturing tolerances for radial through-hole components. PCB hole patterns designed for 0.200" spacing will accommodate the substitute part without modification.

Q: Why is RoHS compliance important for this substitution?

A: RoHS3 compliance ensures the substitute part meets current environmental and regulatory standards for hazardous substance restrictions. This is essential for applications in regulated industries and for long-term design certification.

Q: Is the extended temperature range (-55°C to 125°C) beneficial?

A: Yes. The substitute part's extended upper temperature limit (125°C vs. 100°C) provides additional thermal margin, improving reliability in high-temperature operating environments and thermal cycling conditions.

Q: Are there any circuit design considerations when switching to the B32529C0684J000?

A: No design modifications are required. The substitute part's electrical characteristics (capacitance, voltage rating, dielectric type) are equivalent to the original. The improved tolerance and temperature range represent performance enhancements without introducing compatibility issues.