DPM4W1K-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The DPM4W1K-F is a 1 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the DPM series. This through-hole radial capacitor operates at 400V DC with a polypropylene metallized dielectric and is designed for DC link and DC filtering applications in high-frequency switching circuits. The part is currently active in production with 1007 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

DPM4W1K-F

Cornell Dubilier Electronics (CDE)In Stock: 1055DPM4W1K-F Datasheet

Current PartRFQ

105MPR400K

Cornell Dubilier / Illinois CapacitorIn Stock: 4143105MPR400K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DPM4W1K-F is determined by strict equivalence across the following critical parameters:

Electrical Equivalence:

• Capacitance value: 1 µF
• Tolerance: ±10%
• Voltage rating (DC): 400V minimum
• Voltage rating (AC): 220V minimum
• Dielectric material: Polypropylene (PP), Metallized

Mechanical Equivalence:

• Mounting type: Through Hole
• Package type: Radial
• Lead spacing: 27.50 mm (allows PCB compatibility)
• Termination: PC Pins

Compliance Equivalence:

• RoHS3 Compliant
• MSL Rating: 1 (Unlimited)
• REACH Status: REACH Unaffected

The substitute part 105MPR400K meets all electrical, mechanical, and compliance requirements for direct substitution in applications requiring the DPM4W1K-F.

Parameter Comparison

Engineering Selection Recommendations

The 105MPR400K is a direct electrical and mechanical substitute for the DPM4W1K-F. Both parts are manufactured within the Cornell Dubilier family and share identical electrical specifications, voltage ratings, dielectric material, and compliance certifications.

Selection Basis:

1. Electrical Compatibility: Both parts deliver 1 µF capacitance at 400V DC with ±10% tolerance and polypropylene metallized dielectric construction. They are functionally equivalent in DC link and DC filtering applications.

2. Mechanical Compatibility: Both parts feature through-hole radial mounting with 27.50 mm lead spacing, ensuring PCB footprint compatibility. The 105MPR400K exhibits a lower seated height (22.00 mm vs. 28.00 mm), which may provide layout advantages in space-constrained designs.

3. Compliance Status: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL Rating 1 (unlimited moisture sensitivity level), meeting regulatory requirements for industrial and commercial applications.

4. Product Status: Both parts are active in production with adequate inventory availability (DPM4W1K-F: 1007 units; 105MPR400K: 4117 units).

Selection between these parts depends on physical space constraints and inventory availability rather than electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the 105MPR400K replace the DPM4W1K-F in existing designs?

A: Yes. The 105MPR400K is electrically and mechanically equivalent. Both parts share identical capacitance (1 µF), voltage ratings (400V DC / 220V AC), tolerance (±10%), dielectric material (polypropylene metallized), operating temperature range (-55°C to +105°C), and lead spacing (27.50 mm). PCB footprints are compatible.

Q: What is the difference in physical size between these parts?

A: The DPM4W1K-F measures 32.00 mm (L) x 16.00 mm (W) with a maximum seated height of 28.00 mm. The 105MPR400K measures 31.00 mm (L) x 15.00 mm (W) with a maximum seated height of 22.00 mm. The 105MPR400K is lower profile, which may benefit designs with vertical space constraints.

Q: Are both parts RoHS compliant?

A: Yes. Both the DPM4W1K-F and 105MPR400K are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for industrial applications.

Q: What is the lead spacing for both parts?

A: Both parts feature 27.50 mm lead spacing, ensuring direct PCB compatibility without layout modifications.

Q: Which part should be selected for new designs?

A: Selection is based on inventory availability and physical space requirements. The 105MPR400K offers lower profile construction (22.00 mm seated height) and higher inventory availability (4117 units vs. 1007 units). The DPM4W1K-F remains available for designs already qualified to this part number.

Q: Are there any performance differences between these parts?

A: Both parts are electrically equivalent across all specified parameters. The 105MPR400K specifies ESR at 177 mOhms; the DPM4W1K-F does not provide this specification. Both parts feature low ESR and low ESL characteristics suitable for high-frequency switching and DC filtering applications.

Q: What is the moisture sensitivity level (MSL) for both parts?

A: Both parts carry MSL Rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly.