942C16P15K-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 942C16P15K-F is a 0.15 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) designed for high-pulse and DV/DT applications. This polypropylene metallized axial capacitor operates at 1600V DC and 460V AC, with an operating temperature range of -55°C to 105°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent capacitance and tolerance values are maintained while accommodating different voltage ratings, physical dimensions, or inventory availability requirements.

Substiute Parts

942C16P15K-F

Cornell Dubilier Electronics (CDE)In Stock: 1026942C16P15K-F Datasheet

Current PartRFQ

940C20P15K-F

Cornell Dubilier Electronics (CDE)In Stock: 8041940C20P15K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 942C16P15K-F is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 0.15 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Axial (exact match required)
• Termination: PC Pins (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)

Allowable Variation Parameters:

• Voltage Rating - DC: May be equal to or greater than 1600V
• Voltage Rating - AC: May be equal to or greater than 460V
• Physical Dimensions: May vary within mechanical compatibility constraints
• ESR: May vary within acceptable operational limits
• Series Classification: May differ (942C vs. 940C)

The substitute part 940C20P15K-F meets all mandatory matching parameters while providing higher voltage ratings (2000V DC / 500V AC), making it suitable for applications requiring enhanced voltage margin or operating in higher voltage environments.

Parameter Comparison

Engineering Selection Recommendations

The 940C20P15K-F serves as a direct substitute for the 942C16P15K-F based on the following engineering criteria:

Electrical Compatibility: Both parts maintain identical capacitance (0.15 µF) and tolerance (±10%), ensuring equivalent electrical performance in the circuit. The substitute part's higher voltage ratings (2000V DC / 500V AC versus 1600V DC / 460V AC) provide increased safety margin and are suitable for applications where the original part's voltage specification is met or exceeded.

Mechanical Compatibility: Both parts are axial through-hole components with PC pin termination. The substitute part features a reduced diameter (19.50mm versus 20.50mm) while maintaining identical length (46.00mm), resulting in improved board space efficiency. This dimensional change does not compromise mechanical fit in standard through-hole applications.

Compliance and Status: Both parts are Active status products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Moisture sensitivity level classification differs (MSL 1 for original versus Not Applicable for substitute), with the substitute offering broader environmental handling flexibility.

Operational Characteristics: Operating temperature range is identical (-55°C to 105°C). ESR difference (5 mOhms versus 7 mOhms) is within acceptable operational tolerance for high-pulse and DV/DT applications.

Frequently Asked Questions (FAQ)

Q: Can the 940C20P15K-F replace the 942C16P15K-F in all applications?

A: Yes, the 940C20P15K-F is electrically and mechanically compatible with the 942C16P15K-F. The substitute part maintains identical capacitance and tolerance while providing higher voltage ratings and improved space efficiency through reduced diameter.

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

A: The 940C20P15K-F operates at 2000V DC and 500V AC compared to the original 1600V DC and 460V AC. This higher rating provides increased voltage margin and allows operation in higher voltage environments without exceeding component stress limits.

Q: Are there physical space considerations when substituting?

A: The substitute part has a smaller diameter (19.50mm versus 20.50mm) while maintaining the same length (46.00mm). This results in reduced radial space requirements on the PCB, which is beneficial for compact designs. The identical length ensures axial spacing remains unchanged.

Q: Do both parts have the same environmental compliance?

A: Both parts are ROHS3 compliant and REACH unaffected. The original part has MSL 1 (Unlimited), while the substitute is Not Applicable for MSL, indicating the substitute offers broader environmental handling flexibility without moisture sensitivity constraints.

Q: What applications are these capacitors designed for?

A: Both the 942C16P15K-F and 940C20P15K-F are specified for high-pulse and DV/DT applications, utilizing polypropylene metallized dielectric construction suitable for demanding transient and switching environments.

Q: Is there a performance difference due to the ESR variation?

A: The substitute part has slightly higher ESR (7 mOhms versus 5 mOhms). For high-pulse and DV/DT applications, this 2 mOhm difference is within acceptable operational tolerance and does not compromise circuit performance.