Equivalent & Substitute Parts for QAP2J684KRP

Part Overview

The Nichicon QAP2J684KRP is a 0.68 µF film capacitor rated for 630V DC with polypropylene dielectric material in axial through-hole configuration. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design support and procurement continuity. The QAP series represents a legacy product line, making alternative sourcing critical for maintenance and repair applications.

Substiute Parts

QAP2J684KRP

NichiconIn Stock: 1295QAP2J684KRP Datasheet

Current PartRFQ

MPF1633470KJ

NichiconIn Stock: 835MPF1633470KJ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QAP2J684KRP is determined by the following critical parameters:

• Capacitance Value: Must match 0.68 µF within the specified ±10% tolerance band
• Voltage Rating: Must equal or exceed 630V DC to maintain circuit safety margins
• Dielectric Type: Polypropylene metallized film required for equivalent electrical performance
• Mounting Configuration: Axial through-hole package mandatory for PCB compatibility
• Temperature Range: Operating range must encompass -40°C to 85°C minimum
• Regulatory Compliance: RoHS3 and REACH compliance required for modern procurement standards

The identified substitute part (MPF1633470KJ) does not meet the primary substitution criterion of matching capacitance value (0.47 µF versus 0.68 µF required). This represents a different capacitance specification and cannot serve as a direct equivalent for the QAP2J684KRP in applications requiring the 0.68 µF value.

Parameter Comparison

Engineering Selection Recommendations

The MPF1633470KJ cannot be used as a direct substitute for the QAP2J684KRP due to capacitance value mismatch (0.47 µF versus 0.68 µF). Direct substitution requires identification of alternative parts matching the exact 0.68 µF specification with 630V rating and axial through-hole configuration.

The MPF1633470KJ is an active product from Nichicon with confirmed RoHS3 compliance status, making it suitable for new designs requiring 0.47 µF capacitance at 630V. For applications currently using the obsolete QAP2J684KRP, component selection must prioritize matching the original 0.68 µF capacitance value to maintain circuit performance and design integrity.

Frequently Asked Questions (FAQ)

Q: Can the MPF1633470KJ replace the QAP2J684KRP in my circuit?

A: No. The MPF1633470KJ has a capacitance value of 0.47 µF, while the QAP2J684KRP requires 0.68 µF. These are different capacitance specifications and are not interchangeable. Using an incorrect capacitance value will alter circuit performance.

Q: What makes a part a valid substitute for the QAP2J684KRP?

A: A valid substitute must match all critical parameters: 0.68 µF capacitance, 630V DC rating, ±10% tolerance, polypropylene metallized dielectric, axial through-hole package, and operating temperature range of -40°C to 85°C minimum.

Q: Why is the QAP2J684KRP listed as obsolete?

A: The QAP series represents a legacy product line. Nichicon has transitioned to newer product families. Current inventory remains available, but long-term sourcing requires identification of active equivalent parts.

Q: Are there compliance differences between the main part and substitute?

A: The QAP2J684KRP is confirmed ROHS3 compliant. The MPF1633470KJ compliance status is not specified in the provided data. Compliance verification is required before selection for regulated applications.

Q: Does package size matter when selecting a substitute?

A: Yes. The QAP2J684KRP uses axial through-hole configuration with specific dimensions (19.60mm × 11.40mm × 35.00mm). Any substitute must maintain axial through-hole mounting to ensure PCB compatibility and mechanical fit.