332MPW400K Film Capacitor Equivalent & Substitute Parts

Part Overview

The 332MPW400K is a 3300 pF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, designed for DC link and DC filtering applications. This polypropylene metallized axial capacitor operates at 400V DC with ±10% tolerance and maintains performance across -55°C to 105°C. The part is currently active in production with 936 pieces in stock. Substitute parts are identified when equivalent capacitance and tolerance specifications are maintained while voltage ratings or other electrical parameters may differ to accommodate specific application requirements.

Substiute Parts

332MPW400K

Cornell Dubilier / Illinois CapacitorIn Stock: 966332MPW400K Datasheet

Current PartRFQ

332MPW630K

Cornell Dubilier / Illinois CapacitorIn Stock: 3323332MPW630K Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 332MPW400K is determined by the following critical parameters that must remain constant:

Fixed Parameters (Must Match):

• Capacitance: 3300 pF
• Tolerance: ±10%
• Dielectric Material: Polypropylene (PP), Metallized
• Mounting Type: Through Hole
• Package / Case: Axial
• Physical Dimensions: 0.256" Dia x 0.571" L (6.50mm x 14.50mm)
• Termination: PC Pins
• Operating Temperature Range: -55°C to 105°C
• Series: MPW
• Manufacturer: Cornell Dubilier / Illinois Capacitor

Variable Parameters (May Differ):

• Voltage Rating - DC
• Voltage Rating - AC

The 332MPW630K qualifies as a parametric equivalent because it maintains all fixed parameters while providing an elevated DC voltage rating of 630V (compared to 400V) and elevated AC voltage rating of 250V (compared to 220V). This substitution is valid for applications where the higher voltage rating does not create design constraints.

Parameter Comparison

Engineering Selection Recommendations

Both the 332MPW400K and 332MPW630K are active production parts manufactured by Cornell Dubilier / Illinois Capacitor and comply with ROHS3 and REACH requirements. Selection between these parts is based on application voltage requirements:

Select 332MPW400K when:

• Application circuit operates at or below 400V DC and 220V AC
• Design specifications explicitly require 400V rated components
• Inventory availability of the primary part is sufficient

Select 332MPW630K when:

• Application circuit operates above 400V DC or above 220V AC but within 630V DC and 250V AC limits
• Higher voltage margin is required for circuit reliability
• The 332MPW400K is unavailable and voltage headroom permits substitution
• Inventory requirements favor the higher-stock substitute (3216 pieces available)

Both parts maintain identical capacitance, tolerance, dielectric material, physical dimensions, and operating temperature range, ensuring functional equivalence within their respective voltage ratings.

Frequently Asked Questions (FAQ)

Q: Can the 332MPW630K replace the 332MPW400K in all applications?

A: The 332MPW630K can replace the 332MPW400K only in applications where the circuit voltage does not exceed 400V DC or 220V AC. The substitute part has higher voltage ratings (630V DC, 250V AC) and identical capacitance and tolerance. If the application requires exactly 400V operation with no voltage margin, use the specified 332MPW400K.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 332MPW400K and 332MPW630K share identical physical dimensions of 0.256" diameter by 0.571" length (6.50mm x 14.50mm). They are both axial through-hole components with PC pin termination and will occupy the same board space.

Q: What is the tolerance specification for these capacitors?

A: Both parts carry a ±10% capacitance tolerance. This means the actual capacitance value will fall within 2970 pF to 3630 pF for the nominal 3300 pF specification.

Q: Do these parts require any special handling or storage conditions?

A: Both parts have Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard component storage conditions apply.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the 332MPW400K and 332MPW630K are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What applications are these capacitors designed for?

A: Both parts are specified for DC Link and DC Filtering applications, utilizing their low ESR characteristics and polypropylene dielectric material for stable performance in these circuit functions.