WMC2P15K-F Equivalent & Substitute Parts

Part Overview

The WMC2P15K-F is a 0.15 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the WMC series. This axial polyester film capacitor is rated for 250V DC operation with ±10% tolerance and operates across a temperature range of -55°C to 125°C. The component is designed for through-hole mounting applications requiring high pulse and DV/DT performance characteristics. Product status is Active with 707 units currently in stock. Substitute parts are identified when the original part becomes unavailable, when inventory constraints exist, or when application requirements permit operation at higher voltage ratings with compatible electrical and mechanical parameters.

Substiute Parts

WMC2P15K-F

Cornell Dubilier Electronics (CDE)In Stock: 765WMC2P15K-F Datasheet

Current PartRFQ

154MWR400K

Cornell Dubilier / Illinois CapacitorIn Stock: 4296154MWR400K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WMC2P15K-F is permissible with the 154MWR400K based on the following criteria:

Matching Parameters (Required for Substitution):

• Capacitance: Both parts rated at 0.15 µF
• Tolerance: Both parts maintain ±10% tolerance
• Dielectric Material: Both use polyester film construction
• Mounting Type: Both are through-hole mounted
• Package / Case: Both are axial configuration
• Termination: Both use PC pins
• RoHS Compliance: Both are ROHS3 compliant
• REACH Status: Both are REACH unaffected

Differing Parameters (Application-Dependent):

• Voltage Rating - DC: WMC2P15K-F rated 250V; 154MWR400K rated 400V
• Voltage Rating - AC: WMC2P15K-F rated 125V; 154MWR400K rated 200V
• Operating Temperature Range: WMC2P15K-F operates -55°C to 125°C; 154MWR400K operates -40°C to 105°C
• Physical Dimensions: WMC2P15K-F measures 0.382" Dia x 0.906" L; 154MWR400K measures 0.335" Dia x 0.748" L
• Dielectric Construction: WMC2P15K-F uses standard polyester; 154MWR400K uses metallized polyester
• ESR: 154MWR400K specifies 9.431 Ohms; WMC2P15K-F does not specify ESR

The 154MWR400K operates at higher voltage ratings and features metallized polyester construction with lower ESR characteristics. This substitute is applicable in circuits where the 250V DC requirement of the original part can be satisfied by the 400V DC rating of the substitute, and where the reduced operating temperature range (-40°C to 105°C versus -55°C to 125°C) is acceptable for the application environment.

Parameter Comparison

Engineering Selection Recommendations

Both the WMC2P15K-F and 154MWR400K maintain Active product status and full compliance with ROHS3 and REACH regulations. Selection between these parts is determined by circuit voltage requirements and operating temperature constraints.

The WMC2P15K-F is the primary selection for applications requiring the full -55°C to 125°C operating temperature range or where the 250V DC rating precisely matches circuit specifications.

The 154MWR400K is applicable as a substitute when circuit voltage requirements are satisfied by its 400V DC rating and when the operating environment remains within -40°C to 105°C. The metallized polyester construction and specified low ESR of 9.431 Ohms provide additional performance characteristics for applications sensitive to equivalent series resistance. The smaller physical dimensions (0.335" Dia x 0.748" L versus 0.382" Dia x 0.906" L) may provide layout advantages in space-constrained designs.

Both parts are available in production quantities with established supply chains. The 154MWR400K currently maintains higher inventory levels (4259 units) compared to the WMC2P15K-F (707 units).

Frequently Asked Questions (FAQ)

Q: Can the 154MWR400K directly replace the WMC2P15K-F in all applications?

A: Direct substitution is permissible only when the application circuit operates within the 154MWR400K voltage and temperature specifications. The substitute part is rated for 400V DC (exceeding the 250V DC requirement) and operates across -40°C to 105°C. Applications requiring operation below -40°C or above 105°C must use the WMC2P15K-F.

Q: What is the significance of the metallized polyester construction in the 154MWR400K?

A: The 154MWR400K uses metallized polyester film, which differs from the standard polyester construction of the WMC2P15K-F. Metallized construction provides lower equivalent series resistance (9.431 Ohms specified) and is suitable for applications where ESR performance is a design parameter.

Q: Are there physical installation differences between these parts?

A: Both parts use axial through-hole mounting with PC pin termination. However, the 154MWR400K is physically smaller (0.335" Dia x 0.748" L) compared to the WMC2P15K-F (0.382" Dia x 0.906" L). PCB layout and component spacing must accommodate the substitute part's dimensions.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the WMC2P15K-F and 154MWR400K are ROHS3 compliant and REACH unaffected, meeting current electronic component regulatory requirements.

Q: What is the tolerance specification for both parts?

A: Both parts maintain ±10% capacitance tolerance, ensuring equivalent tolerance performance in circuit applications.

Q: Can the 154MWR400K be used in applications requiring the full -55°C to 125°C temperature range?

A: No. The 154MWR400K operating range is -40°C to 105°C. Applications requiring operation at temperatures below -40°C or above 105°C must use the WMC2P15K-F.