MPXQD68K Film Capacitor Equivalent & Substitute Parts

Part Overview

The MPXQD68K is a 6800 pF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 275V AC rating, polypropylene dielectric, and radial through-hole mounting. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. The capacitor is designed for EMI and RFI suppression with X2 safety ratings and operates across a temperature range of -40°C to 100°C.

Substiute Parts

MPXQD68K

Cornell Dubilier Electronics (CDE)In Stock: 736MPXQD68K Datasheet

Current PartRFQ

B32021A3682K000

EPCOS - TDK ElectronicsIn Stock: 20983B32021A3682K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPXQD68K is determined by the following critical parameters:

Electrical Compatibility:

• Capacitance value: 6800 pF (exact match required)
• Tolerance: ±10% (exact match required)
• Dielectric material: Polypropylene (PP), Metallized (exact match required)
• Voltage rating: Substitute must meet or exceed 275V AC minimum

Mechanical Compatibility:

• Mounting type: Through Hole (exact match required)
• Package type: Radial (exact match required)
• Lead spacing: 0.394" (10.00mm) (exact match required)
• Termination: PC Pins (exact match required)

Regulatory Compliance:

• RoHS3 compliance required
• REACH Unaffected status required

The B32021A3682K000 satisfies all substitution criteria with enhanced voltage ratings and extended operating temperature range, while maintaining identical physical dimensions and electrical specifications for the core application requirements.

Parameter Comparison

Engineering Selection Recommendations

The B32021A3682K000 is a direct functional substitute for the obsolete MPXQD68K. Both components maintain identical capacitance, tolerance, dielectric composition, and physical footprint specifications. The substitute part offers enhanced electrical performance through higher AC voltage rating (300V versus 275V) and DC voltage capability (1500V), with an extended operating temperature range to 110°C.

Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment for current manufacturing standards. The substitute part is currently in active production status, providing supply chain continuity and long-term availability for applications requiring EMI and RFI suppression in through-hole radial configurations.

The marginal height difference (0.433" versus 0.453") remains within typical PCB layout tolerances for radial component placement and does not impact mechanical compatibility in standard applications.

Frequently Asked Questions (FAQ)

Q: Can the B32021A3682K000 be used as a direct replacement for the MPXQD68K in existing designs?

A: Yes. Both components share identical capacitance (6800 pF), tolerance (±10%), dielectric material (polypropylene metallized), physical dimensions (13.00mm x 5.00mm), lead spacing (10.00mm), and radial through-hole mounting configuration. The substitute part meets or exceeds all electrical specifications of the original component.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), manufacturer (CDE versus EPCOS-TDK), voltage ratings (275V AC versus 300V AC and 1500V DC), operating temperature range (-40°C to 100°C versus -40°C to 110°C), and seated height (11.50mm versus 11.00mm). All differences favor the substitute part with enhanced performance margins.

Q: Are there any PCB layout considerations when substituting the B32021A3682K000 for the MPXQD68K?

A: No layout modifications are required. Both components maintain identical lead spacing (10.00mm) and radial package configuration. The 0.02" height difference (11.50mm to 11.00mm) is negligible for standard through-hole applications and does not affect component clearance or assembly processes.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the MPXQD68K and B32021A3682K000 are ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.

Q: What applications are these capacitors suitable for?

A: Both components are specified for EMI and RFI suppression applications. The MPXQD68K carries X2 safety ratings, while the B32021A3682K000 carries Y2 safety ratings. Selection between these ratings depends on specific application requirements and circuit topology.

Q: Is the substitute part available in the same packaging format?

A: The MPXQD68K is supplied in standard packaging, while the B32021A3682K000 is supplied in bulk packaging. Both maintain identical component specifications and radial through-hole configuration suitable for automated and manual assembly processes.