MMWA05P47K-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The MMWA05P47K-F is a 0.47 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the MMWA series. This axial-mounted through-hole component operates across a temperature range of -55°C to 125°C with a 50V DC voltage rating and ±10% capacitance tolerance. The part is ROHS3 compliant and maintains active product status. Substitute parts are identified when equivalent electrical performance is required but the original part is unavailable, when alternative mounting configurations are acceptable, or when higher voltage ratings are necessary for system redesign.

Substiute Parts

MMWA05P47K-F

Cornell Dubilier Electronics (CDE)In Stock: 1168MMWA05P47K-F Datasheet

Current PartRFQ

B32521C3474K000

EPCOS - TDK ElectronicsIn Stock: 10101B32521C3474K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMWA05P47K-F is determined by the following criteria:

Electrical Equivalence Requirements:

• Capacitance value must be 0.47 µF
• Tolerance must be ±10% or tighter
• Voltage rating must be ≥50V DC
• Dielectric material must be polyester-based (metallized polyester or polyethylene terephthalate)
• Operating temperature range must encompass -55°C to 125°C

Mechanical and Compliance Requirements:

• Through-hole mounting type required for PCB compatibility
• ROHS3 compliance mandatory
• Termination must be PC pins

Identified Substitute: The B32521C3474K000 from EPCOS - TDK Electronics meets all electrical requirements with a 250V DC rating (exceeds 50V requirement) and identical capacitance and tolerance specifications. However, this part uses radial mounting instead of axial mounting, requiring PCB layout modification. The dielectric material (polyester/PET metallized) is functionally equivalent to the original polyester metallized construction.

Parameter Comparison

Engineering Selection Recommendations

When to Use MMWA05P47K-F (Original):

• Axial mounting configuration is required by PCB layout
• Space constraints favor the 8.10mm diameter axial form factor
• Original design specifications mandate axial orientation
• No PCB redesign is feasible

When to Use B32521C3474K000 (Substitute):

• PCB layout can accommodate radial mounting configuration
• Higher voltage rating (250V DC) provides additional design margin
• Original part is unavailable from inventory
• Radial mounting is acceptable for the application
• AEC-Q200 automotive rating is required (original part does not specify automotive rating)

Compliance Considerations: Both parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for electronics manufacturing. Both maintain active product status with established supply chains. The substitute part carries AEC-Q200 automotive qualification, which may be advantageous for automotive or high-reliability applications.

Frequently Asked Questions (FAQ)

Q: Can B32521C3474K000 be used as a direct drop-in replacement for MMWA05P47K-F?

A: No. While both parts have identical electrical specifications (0.47 µF, ±10%, -55°C to 125°C), the B32521C3474K000 uses radial mounting versus the axial mounting of the MMWA05P47K-F. Direct substitution requires PCB layout modification to accommodate the different lead configuration and spacing (0.394" radial spacing versus axial orientation).

Q: What are the electrical differences between these parts?

A: Electrically, there are no functional differences. Both parts provide 0.47 µF capacitance with ±10% tolerance across the same operating temperature range. The B32521C3474K000 has a higher voltage rating (250V DC versus 50V DC), which does not create incompatibility but rather provides additional design margin.

Q: Are both parts suitable for the same applications?

A: Both parts are suitable for general-purpose film capacitor applications requiring 0.47 µF capacitance. The B32521C3474K000 additionally carries AEC-Q200 automotive qualification, making it suitable for automotive and high-reliability applications. The original MMWA05P47K-F is specified for general-purpose use.

Q: What is the impact of the different dielectric materials?

A: The MMWA05P47K-F uses polyester metallized film, while the B32521C3474K000 uses polyester/PET (polyethylene terephthalate) metallized film in a stacked configuration. Both are polyester-based dielectrics with metallized construction, providing functionally equivalent electrical performance for this capacitance and voltage class.

Q: Can the substitute part be used in space-constrained applications?

A: The B32521C3474K000 has different physical dimensions (13.00mm L x 6.00mm W x 12.00mm H) compared to the MMWA05P47K-F (8.10mm diameter x 17.40mm length). Space suitability depends on the specific PCB layout constraints. The radial configuration may be more compact in some layouts but requires different mounting hole spacing (0.394" radial spacing).

Q: Are there any temperature or environmental differences?

A: Both parts operate across -55°C to 125°C with identical temperature specifications. Both are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is not applicable to both parts.