Equivalent & Substitute Parts for 223MPW250K

Part Overview

The 223MPW250K is a 0.022 µF film capacitor manufactured by Cornell Dubilier / Illinois Capacitor, rated for 250V DC operation. This polypropylene metallized axial capacitor is designed for DC link and DC filtering applications, featuring low ESR characteristics and through-hole axial mounting. The part is currently active in production with 904 units in stock. Substitute parts are identified when equivalent capacitance and dielectric material are maintained while voltage ratings or physical dimensions may vary within acceptable engineering parameters.

Substiute Parts

223MPW250K

Cornell Dubilier / Illinois CapacitorIn Stock: 931223MPW250K Datasheet

Current PartRFQ

223MPW400K

Cornell Dubilier / Illinois CapacitorIn Stock: 1685223MPW400K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 223MPW250K is determined by the following critical parameters:

Capacitance Value: Must remain 0.022 µF. This is the primary functional specification and cannot be altered.

Dielectric Material: Must remain Polypropylene (PP), Metallized. This ensures equivalent electrical performance and temperature stability.

Mounting Type and Termination: Must remain Through Hole Axial with PC Pins to ensure mechanical and electrical compatibility with existing PCB designs.

Operating Temperature Range: Must maintain -55°C ~ 105°C to ensure operation across the specified thermal envelope.

Voltage Rating: The DC voltage rating may be increased above 250V without compromising functionality, as higher-rated components operate safely at lower applied voltages. The substitute part 223MPW400K operates at 400V DC, providing enhanced voltage margin while maintaining all other critical parameters.

Tolerance and Compliance: Tolerance must remain ±10%. RoHS3 compliance and MSL 1 rating must be maintained.

Parameter Comparison

Engineering Selection Recommendations

The 223MPW400K serves as a direct substitute for the 223MPW250K based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical capacitance (0.022 µF), tolerance (±10%), and dielectric material (Polypropylene, Metallized). The substitute part's higher voltage rating (400V DC versus 250V DC) does not compromise performance in circuits designed for 250V operation.

Mechanical Compatibility: Both parts feature identical diameter (0.276"), axial through-hole mounting, and PC pin termination. The axial length difference of 0.4mm (15.00mm versus 14.50mm) is within typical PCB layout tolerances for through-hole components and does not affect functional compatibility.

Thermal and Environmental Compliance: Both parts operate across the identical temperature range (-55°C ~ 105°C) and maintain ROHS3 compliance with MSL 1 rating, ensuring equivalent reliability and regulatory acceptance.

Production Status: Both parts are active products with established supply chains. The 223MPW400K has higher inventory availability (1619 units versus 904 units), providing supply chain flexibility.

Frequently Asked Questions (FAQ)

Q: Can the 223MPW400K replace the 223MPW250K in all applications?

A: Yes. The substitute part maintains identical capacitance, tolerance, dielectric material, operating temperature range, and mounting configuration. The higher voltage rating presents no functional limitation in circuits designed for 250V operation.

Q: Does the 0.4mm length difference affect PCB layout compatibility?

A: No. The 0.4mm difference (14.50mm versus 15.00mm) is within standard through-hole component tolerances and does not impact PCB footprint design or assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. Both the 223MPW250K and 223MPW400K are ROHS3 compliant with MSL 1 rating, meeting equivalent environmental and regulatory requirements.

Q: What is the significance of the higher voltage rating on the substitute part?

A: The 400V DC rating on the 223MPW400K provides increased voltage margin above the 250V application requirement. This does not alter electrical performance at 250V but may extend component life in circuits with voltage transients or margin requirements.

Q: Are the ESR characteristics equivalent?

A: Both parts feature low ESR design. The 223MPW400K specifies 8.038 Ohms ESR. Both parts are suitable for DC link and DC filtering applications requiring low equivalent series resistance.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Identical capacitance, tolerance, dielectric material, mounting type, and termination configuration ensure direct interchangeability. No circuit redesign or validation is required.