MMP4S33K-F Equivalent & Substitute Parts

Part Overview

The MMP4S33K-F is a 0.033 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) as part of the MMP series. This polyester metallized axial capacitor is rated for 400V DC operation with a wide operating temperature range of -55°C to 125°C. The product is currently active and ROHS3 compliant. Identification of equivalent substitute parts becomes necessary when the primary part is unavailable or when application requirements demand different voltage ratings or availability levels.

Substiute Parts

MMP4S33K-F

Cornell Dubilier Electronics (CDE)In Stock: 974MMP4S33K-F Datasheet

Current PartRFQ

MMP6S33K-F

Cornell Dubilier Electronics (CDE)In Stock: 2478MMP6S33K-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the MMP4S33K-F is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance value: 0.033 µF (exact match required)
• Dielectric material: Polyester, Metallized (exact match required)
• Package type: Axial (exact match required)
• Termination type: PC Pins (exact match required)
• Physical dimensions: 10.00mm W × 6.00mm T × 17.00mm L (exact match required)

Voltage Substitution Rules:

• Substitute parts must have a DC voltage rating equal to or greater than 400V
• Substitute parts must have an AC voltage rating equal to or greater than 200V
• A higher voltage rating constitutes an uprated equivalent suitable for the same applications

Operational Compatibility:

• Operating temperature range must maintain -55°C to 125°C minimum
• Tolerance must remain ±10%
• All applicable compliance standards (ROHS3, REACH Unaffected) must be maintained

Parameter Comparison

Engineering Selection Recommendations

The MMP6S33K-F is an uprated equivalent to the MMP4S33K-F with identical capacitance, physical dimensions, and dielectric characteristics. The substitute part exceeds the voltage specification of the primary part, providing a 630V DC rating versus 400V DC. Both parts maintain active product status and full compliance with ROHS3 and REACH regulations. The MMP6S33K-F is suitable for direct substitution in applications originally specified for the MMP4S33K-F, with the advantage of higher voltage headroom for circuit designs operating within these voltage levels.

Frequently Asked Questions (FAQ)

Q: Can the MMP6S33K-F substitute for the MMP4S33K-F in all applications? A: Yes. The MMP6S33K-F is a higher-voltage-rated equivalent with identical capacitance (0.033 µF), physical dimensions, and dielectric material. All other critical parameters—mounting type, termination, temperature range, and tolerance—are identical. The higher voltage rating (630V DC versus 400V DC) poses no compatibility issue.

Q: Are the physical dimensions identical between the main part and substitute? A: Yes. Both the MMP4S33K-F and MMP6S33K-F share identical physical dimensions of 10.00mm W × 6.00mm T × 17.00mm L. Both are axial-package film capacitors with PC pin termination, ensuring direct board-level compatibility.

Q: Do both parts meet the same compliance standards? A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and maintain Moisture Sensitivity Level 1 (unlimited). There are no compliance differences that would affect application suitability.

Q: What is the practical difference between the two parts? A: The MMP6S33K-F has a higher DC voltage rating (630V versus 400V) and higher AC voltage rating (250V versus 200V). This makes it suitable for applications requiring greater voltage margins or operating in higher-voltage environments while maintaining the same capacitive value.

Q: Can the main part substitute for the equivalent in all circuit designs? A: The MMP4S33K-F cannot substitute for the MMP6S33K-F if the circuit is specifically designed for 630V DC operation. However, it can be used in applications designed for the lower 400V DC specification.