DPM4W2P2K Film Capacitor Equivalent & Substitute Parts

Part Overview

The DPM4W2P2K is a 2.2 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 400VDC voltage rating and polypropylene dielectric. This radial through-hole component is designed for DC link, DC filtering, and high-frequency switching applications. The part is currently classified as obsolete, making identification of active equivalent models necessary for ongoing procurement and system maintenance.

Substiute Parts

DPM4W2P2K

Cornell Dubilier Electronics (CDE)In Stock: 856DPM4W2P2K Datasheet

Current PartRFQ

DPM4W2P2K-F

Cornell Dubilier Electronics (CDE)In Stock: 838DPM4W2P2K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DPM4W2P2K is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Capacitance value: 2.2 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating - DC: 400V (minimum requirement; higher ratings acceptable)
• Voltage Rating - AC: 220V (minimum requirement; higher ratings acceptable)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (minimum requirement; wider ranges acceptable)

Mechanical Equivalence Criteria:

• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial (exact match required)
• Lead Spacing: 1.575" (40.00mm) (exact match required)
• Termination: PC Pins (exact match required)
• Physical Dimensions: 1.850" L x 0.787" W; Height 1.220" max (exact match required for PCB compatibility)

Performance Features:

• Low ESR, Low ESL characteristics (required for high-frequency and switching applications)

Substitute parts must satisfy all electrical and mechanical criteria to ensure functional and physical compatibility without circuit redesign or PCB modification.

Parameter Comparison

Engineering Selection Recommendations

The DPM4W2P2K-F is a direct functional and mechanical equivalent of the obsolete DPM4W2P2K. Both parts are manufactured by Cornell Dubilier Electronics within the DPM series and share identical electrical specifications and physical dimensions.

Key Differentiation Factors:

Product Status: The DPM4W2P2K is classified as obsolete, while the DPM4W2P2K-F maintains active product status. For new designs, ongoing production, and long-term component availability, the DPM4W2P2K-F is the appropriate selection.

Regulatory Compliance: The DPM4W2P2K-F is ROHS3 compliant, whereas the DPM4W2P2K is RoHS non-compliant. For applications subject to RoHS directives or customer requirements mandating RoHS compliance, the DPM4W2P2K-F is required.

Moisture Sensitivity: The DPM4W2P2K-F carries an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling. The DPM4W2P2K lists MSL as Not Applicable.

Electrical and Mechanical Compatibility: All electrical parameters (capacitance, tolerance, voltage ratings, dielectric material, temperature range) and mechanical parameters (mounting type, package, dimensions, lead spacing, termination) are identical between the two parts. Direct substitution is supported without circuit modification or PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the DPM4W2P2K-F be used as a direct replacement for the DPM4W2P2K?

A: Yes. The DPM4W2P2K-F is electrically and mechanically equivalent to the DPM4W2P2K. Both parts have identical capacitance (2.2 µF), tolerance (±10%), voltage ratings (400VDC / 220VAC), dielectric material (polypropylene metallized), operating temperature range (-55°C ~ 105°C), and physical dimensions (1.850" L x 0.787" W, 1.220" height, 1.575" lead spacing). Direct substitution requires no circuit changes or PCB modifications.

Q: Why should I transition from DPM4W2P2K to DPM4W2P2K-F?

A: The DPM4W2P2K is obsolete and subject to limited availability. The DPM4W2P2K-F is an active product with ongoing manufacturing and supply. Additionally, the DPM4W2P2K-F is ROHS3 compliant, meeting current regulatory requirements for many markets and applications.

Q: Are the physical dimensions identical between these two parts?

A: Yes. Both parts have identical dimensions: 1.850" length x 0.787" width (47.00mm x 20.00mm), maximum seated height of 1.220" (31.00mm), and lead spacing of 1.575" (40.00mm). PCB footprints and mounting holes are compatible without modification.

Q: What is the difference in RoHS compliance between these parts?

A: The DPM4W2P2K is RoHS non-compliant. The DPM4W2P2K-F is ROHS3 compliant. For applications requiring RoHS compliance or for customers with RoHS mandates, the DPM4W2P2K-F is the required selection.

Q: Are there any performance differences between the DPM4W2P2K and DPM4W2P2K-F?

A: No performance differences exist. Both parts feature low ESR and low ESL characteristics and are rated for identical applications: DC link, DC filtering, high-frequency, and switching circuits. Electrical performance in DC link and switching applications is equivalent.

Q: What is the lead spacing for these radial film capacitors?

A: The lead spacing is 1.575" (40.00mm) for both the DPM4W2P2K and DPM4W2P2K-F. This spacing is fixed and identical across both parts, ensuring PCB compatibility.

Q: Can these capacitors be used in high-frequency switching applications?

A: Yes. Both the DPM4W2P2K and DPM4W2P2K-F are rated for high-frequency and switching applications. The low ESR and low ESL features support these applications within the specified voltage and temperature ratings.

Q: What is the operating temperature range for these capacitors?

A: The operating temperature range for both parts is -55°C to 105°C. This range covers industrial and commercial temperature environments.