MMWA2P68K Film Capacitor Equivalent & Substitute Parts

Part Overview

The MMWA2P68K is a 0.68 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), designed for general-purpose applications requiring 250V DC voltage rating with polyester metallized dielectric construction. This part is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing procurement and system maintenance. The MMWA2P68K operates across a temperature range of -55°C to 125°C and features axial through-hole mounting with PC pin termination.

Substiute Parts

MMWA2P68K

Cornell Dubilier Electronics (CDE)In Stock: 878MMWA2P68K Datasheet

Current PartRFQ

MMWA2P68K-F

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMWA2P68K is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance Value: 0.68 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating - DC: 250V (minimum requirement; higher ratings acceptable)
• Voltage Rating - AC: 125V (minimum requirement; higher ratings acceptable)
• Dielectric Material: Polyester, Metallized (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Axial (exact match required)
• Physical Dimensions: 0.366" Dia x 1.000" L / 9.30mm x 25.40mm (exact match required)
• Termination: PC Pins (exact match required)

Substitute parts must satisfy all parameters listed above to ensure functional and mechanical compatibility within the original application circuit.

Parameter Comparison

Engineering Selection Recommendations

MMWA2P68K-F is the primary direct substitute for the obsolete MMWA2P68K. Both parts are manufactured by Cornell Dubilier Electronics and share identical electrical and mechanical specifications across all critical parameters: 0.68 µF capacitance, ±10% tolerance, 250V DC / 125V AC voltage ratings, polyester metallized dielectric, -55°C to 125°C operating temperature range, axial through-hole mounting, and identical physical dimensions of 0.366" Dia x 1.000" L (9.30mm x 25.40mm).

The key distinction between these parts is product status and regulatory compliance. The MMWA2P68K is obsolete, while the MMWA2P68K-F is active and carries ROHS3 compliance certification. Both parts maintain REACH Unaffected status and EAR99 export classification. The MMWA2P68K-F is available in higher inventory (988 Pcs) compared to the obsolete MMWA2P68K (808 Pcs).

QAK2E684KTP is listed as a secondary substitute option. However, complete electrical and mechanical parameter data for this part number is not provided in the available documentation. Selection of QAK2E684KTP requires verification of all parameters against the MMWA2P68K specification to confirm functional equivalence.

For new designs and ongoing procurement, the MMWA2P68K-F is the recommended selection due to active product status, improved regulatory compliance, and superior availability.

Frequently Asked Questions (FAQ)

Q: Can MMWA2P68K-F directly replace MMWA2P68K in existing applications?

A: Yes. The MMWA2P68K-F is a direct substitute with identical electrical and mechanical parameters. All critical specifications—capacitance, tolerance, voltage ratings, dielectric material, operating temperature range, mounting type, package configuration, and physical dimensions—are equivalent between the two parts.

Q: What is the significance of the product status difference (Obsolete vs. Active)?

A: The MMWA2P68K is classified as obsolete, indicating discontinued manufacturing and limited availability. The MMWA2P68K-F is active, ensuring ongoing production, consistent supply, and manufacturer support. For new procurement and long-term system reliability, the active MMWA2P68K-F is the appropriate selection.

Q: Does the RoHS3 compliance of MMWA2P68K-F affect compatibility?

A: No. RoHS3 compliance of the MMWA2P68K-F represents improved environmental and regulatory adherence compared to the non-compliant MMWA2P68K. This compliance status does not alter electrical or mechanical function and is beneficial for applications subject to RoHS requirements.

Q: Are the physical dimensions identical between MMWA2P68K and MMWA2P68K-F?

A: Yes. Both parts share identical physical dimensions of 0.366" Dia x 1.000" L (9.30mm x 25.40mm), ensuring mechanical compatibility in PCB layouts and enclosure designs.

Q: What parameters must match for a substitute part to be considered equivalent?

A: Substitute parts must match the following parameters exactly: capacitance value (0.68 µF), tolerance (±10%), DC voltage rating (250V), AC voltage rating (125V), dielectric material (polyester, metallized), operating temperature range (-55°C ~ 125°C), mounting type (through hole), package type (axial), physical dimensions (0.366" Dia x 1.000" L), and termination type (PC pins).

Q: Is QAK2E684KTP a confirmed equivalent?

A: QAK2E684KTP is listed as a secondary substitute option. Complete parameter documentation for this part is not provided. Confirmation of equivalence requires verification of all electrical and mechanical specifications against the MMWA2P68K baseline.

Q: What is the inventory status for substitute parts?

A: MMWA2P68K-F is available with 988 Pcs in stock (active status). The original MMWA2P68K has 808 Pcs available but is obsolete. QAK2E684KTP inventory status is not specified in available data.