MMWA2P68K-F Equivalent & Substitute Parts

Part Overview

The MMWA2P68K-F is a 0.68 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 250V DC voltage rating and ±10% tolerance. This axial-mounted through-hole component utilizes polyester metallized dielectric technology and operates across a temperature range of -55°C to 125°C. The part is currently in active product status with 988 units available in inventory. Substitute parts are identified for applications requiring equivalent electrical performance or where component availability requires alternative sourcing.

Substiute Parts

MMWA2P68K-F

Cornell Dubilier Electronics (CDE)In Stock: 1024MMWA2P68K-F Datasheet

Current PartRFQ

QAK2E684KTP

NichiconIn Stock: 881QAK2E684KTP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMWA2P68K-F is determined by matching the following critical electrical and mechanical parameters:

Electrical Parameters:

• Capacitance value: 0.68 µF
• Tolerance: ±10%
• Voltage rating: 250V DC minimum
• Dielectric type: Polyester, Metallized

Mechanical Parameters:

• Mounting type: Through Hole
• Package configuration: Axial
• Termination style: PC Pins

Compliance Parameters:

• RoHS3 compliance
• REACH unaffected status

The QAK2E684KTP from Nichicon meets all critical electrical specifications and mechanical requirements for direct substitution. Both components share identical capacitance, tolerance, voltage rating, dielectric material, mounting configuration, and termination style. Compliance certifications are equivalent across both parts.

Parameter Comparison

Engineering Selection Recommendations

MMWA2P68K-F Selection: The MMWA2P68K-F is the primary component choice for new designs and applications requiring active product status. This part offers an extended operating temperature range of -55°C to 125°C, providing broader thermal performance capability. The component is currently in active production with 988 units in stock, ensuring supply continuity for production requirements.

QAK2E684KTP Selection: The QAK2E684KTP serves as an electrical equivalent for applications where the MMWA2P68K-F is unavailable. This substitute maintains identical electrical specifications and compliance certifications. However, the QAK2E684KTP carries obsolete product status and operates within a narrower temperature range of -40°C to 85°C. Physical dimensions differ between the two parts; the QAK2E684KTP is larger in width and thickness, requiring verification of board layout compatibility before implementation. The substitute is suitable for legacy system repairs or applications operating within the -40°C to 85°C thermal envelope.

Frequently Asked Questions (FAQ)

Q: Can the QAK2E684KTP directly replace the MMWA2P68K-F in all applications?

A: The QAK2E684KTP provides electrical equivalence for applications operating within -40°C to 85°C. Applications requiring the extended -55°C to 125°C temperature range of the MMWA2P68K-F require the primary part. Physical dimensions differ; board layout compatibility must be confirmed before substitution.

Q: What are the critical parameters for substituting these 0.68 µF film capacitors?

A: Substitution requires matching capacitance (0.68 µF), tolerance (±10%), voltage rating (250V DC), dielectric type (polyester metallized), mounting configuration (through-hole axial), and termination style (PC pins). Both parts meet these criteria.

Q: Why is the QAK2E684KTP listed as obsolete?

A: The QAK2E684KTP carries obsolete product status from Nichicon. This designation indicates the manufacturer has discontinued active production. The MMWA2P68K-F from CDE remains in active production status.

Q: Are there physical dimension constraints when substituting these parts?

A: Yes. The MMWA2P68K-F measures 0.366" diameter by 1.000" length, while the QAK2E684KTP measures 0.512" width by 0.217" thickness by 0.906" length. The substitute is larger in width and thickness dimensions. PCB layout and component spacing must accommodate the larger footprint of the QAK2E684KTP.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the MMWA2P68K-F and QAK2E684KTP are ROHS3 compliant and REACH unaffected, meeting equivalent environmental and regulatory standards.

Q: What is the voltage rating difference between these parts?

A: Both parts are rated for 250V DC. The MMWA2P68K-F additionally specifies 125V AC rating, while the QAK2E684KTP does not provide an AC voltage specification in the available data.