WMF1P15K-F Equivalent & Substitute Parts

Part Overview

The WMF1P15K-F is a 0.15 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 100V DC voltage rating and ±10% tolerance. This polyester dielectric axial component is designed for general-purpose applications requiring through-hole mounting. The part is currently in active production status with 797 pieces available in inventory. Substitute parts are identified when equivalent capacitance and tolerance specifications are required but alternative voltage ratings, dielectric constructions, or physical dimensions better suit specific circuit requirements.

Substiute Parts

WMF1P15K-F

Cornell Dubilier Electronics (CDE)In Stock: 889WMF1P15K-F Datasheet

Current PartRFQ

154MWR400K

Cornell Dubilier / Illinois CapacitorIn Stock: 4296154MWR400K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WMF1P15K-F are identified based on the following criteria:

Mandatory Matching Parameters:

• Capacitance: 0.15 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Axial (exact match required)

Allowable Variation Parameters:

• Voltage Rating - DC: Equal to or greater than 100V (higher ratings provide additional safety margin)
• Dielectric Material: Polyester or Metallized Polyester (both acceptable for general-purpose applications)
• Operating Temperature Range: May differ if minimum and maximum limits encompass the application requirements
• Physical Dimensions: Minor variations acceptable if component fits within PCB layout constraints

The substitute part 154MWR400K meets all mandatory matching criteria while providing a higher voltage rating (400V DC) and metallized polyester dielectric construction. This substitution is valid for applications where the higher voltage rating and alternative dielectric do not conflict with circuit design specifications.

Parameter Comparison

Engineering Selection Recommendations

WMF1P15K-F Selection Criteria:

• Applications requiring 100V DC maximum voltage rating
• Operating temperature range of -55°C to 125°C is required
• Standard polyester dielectric characteristics are acceptable
• Physical dimensions of 0.339" diameter x 0.937" length fit PCB layout
• Original equipment manufacturer (OEM) specification compliance

154MWR400K Selection Criteria:

• Applications requiring higher voltage margin (400V DC rating)
• Operating temperature range limited to -40°C to 105°C is acceptable
• Metallized polyester dielectric with low ESR (9.431 Ohms) characteristics are beneficial
• Compact physical dimensions (0.335" diameter x 0.748" length) provide space savings
• Both parts maintain ROHS3 compliance and REACH unaffected status
• Both parts carry EAR99 export classification

Both parts are active production items with current inventory availability. Selection between these parts depends on circuit voltage requirements, temperature operating range, and physical space constraints within the PCB design.

Frequently Asked Questions (FAQ)

Q: Can the 154MWR400K substitute for the WMF1P15K-F in all applications?

A: The 154MWR400K is functionally equivalent for capacitance and tolerance specifications. However, verify that the operating temperature range (-40°C to 105°C) encompasses your application requirements, as the WMF1P15K-F extends to -55°C and 125°C. Additionally, confirm that the compact physical dimensions (0.335" diameter x 0.748" length) fit within your PCB layout, as the WMF1P15K-F is slightly larger (0.339" diameter x 0.937" length).

Q: What is the significance of the higher 400V DC rating on the 154MWR400K?

A: The 400V DC rating on the 154MWR400K provides a higher voltage safety margin compared to the 100V DC rating of the WMF1P15K-F. This allows the substitute part to operate safely in circuits with higher voltage transients or design margins. The higher voltage rating does not affect capacitance or tolerance performance.

Q: Does the metallized polyester dielectric in the 154MWR400K affect circuit performance?

A: The metallized polyester dielectric in the 154MWR400K is functionally equivalent to the standard polyester dielectric in the WMF1P15K-F for general-purpose applications. The metallized construction contributes to the low ESR specification (9.431 Ohms) of the substitute part, which may provide performance benefits in high-frequency or noise-sensitive circuits.

Q: Are both parts compliant with current regulatory standards?

A: Both the WMF1P15K-F and 154MWR400K are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. Both parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: What are the inventory considerations for these parts?

A: The WMF1P15K-F has 797 pieces in current inventory. The 154MWR400K has 4259 pieces in current inventory, providing greater availability for high-volume production requirements.