P409CP104M275AH331

Overview

The KEMET P409CP104M275AH331 is a metallized paper film capacitor with an integrated series resistor, designed for EMI suppression. It features a capacitance of 100 nF (0.1 µF) and a resistance value of 330 Ohms. Rated at 275 VAC and 630 VDC, it belongs to the X2 safety class. The component utilizes radial through-hole termination with a 20.3 mm lead spacing. Operating within a temperature range of -40°C to +85°C, it meets EN/IEC 60384-14 standards.

Feature Summary

• Integrates a 330 Ohm resistor in series with the capacitor element for enhanced noise filtering.
• Constructed using metallized paper dielectric for reliable high-voltage performance.
• Certified as an X2 safety capacitor for connection across line-to-neutral circuits.
• Designed for radial through-hole mounting with standardized lead spacing.

Applications

• EMI suppression in AC power input stages
• RC snubber networks for switching circuits
• Noise filtering in household appliances
• Industrial control equipment power supplies

Procurement Notes

Verify the specific ordering suffix AH331 to confirm the integrated 330 Ohm resistance value, as standard P409 capacitors may lack this feature. Ensure the selected variant matches the required 20.3 mm lead pitch for PCB compatibility. Cross-reference the manufacturer datasheet to confirm compliance with regional safety certifications such as UL or VDE before finalizing procurement.

Selection Notes

Select this component when both capacitive filtering and resistive damping are required in a single package. The 100 nF capacitance combined with 330 Ohms provides specific impedance characteristics for high-frequency noise attenuation. Consider the physical dimensions and thermal rating if space constraints or elevated ambient temperatures are present in the design.

Part Context

This part belongs to the KEMET P409 series of RC filter capacitors. Unlike standard X2 capacitors, this variant includes an internal resistor to dampen oscillations and reduce electromagnetic interference more effectively. It serves as a specialized solution for applications requiring combined filtering and snubbing capabilities without additional discrete components.

Replacement Considerations

Direct substitutes must match the 100 nF capacitance, 330 Ohm resistance, and 275 VAC rating. Verify that alternative parts maintain the same lead spacing and safety certifications. Generic X2 capacitors without integrated resistors are not suitable replacements unless external resistance is added to the circuit.