4403-031LF

Overview

The 4403-031LF is a feedthrough capacitor from the Tusonix 4403 series, designed for EMI/RFI filtering. It features a capacitance of 500 pF with a rated voltage of 200V and a current rating of 10 A. The component operates within a temperature range of -55°C to +125°C and provides an insertion loss of 15dB at 100MHz. It utilizes an axial bushing package with 4-40 thread specifications, measuring 0.125 inches in diameter and 0.215 inches in length.

Feature Summary

• Provides effective electromagnetic interference suppression through feedthrough architecture
• Supports high current handling capabilities suitable for power line applications
• Features robust thermal stability across extended industrial temperature ranges

Applications

• Power supply input filtering
• Electronic equipment chassis grounding
• Industrial control system noise reduction

Procurement Notes

Verify RoHS compliance status carefully as source data indicates conflicting information regarding this specific part number's regulatory classification. Confirm the exact packaging type and lead times directly with the manufacturer or authorized distributors before ordering, as availability may vary significantly between stock and made-to-order statuses.

Selection Notes

Select this component when a 500 pF capacitance value is required for high-voltage feedthrough applications. Ensure the mounting interface matches the 4-40 thread specification. Consider the 10 A current rating against the expected load to prevent overheating. Verify that the axial bushing form factor fits the panel thickness and hole size constraints of the design.

Part Context

This component belongs to the Tusonix 4403 series of feedthrough capacitors. These parts are engineered for direct panel mounting, offering superior high-frequency attenuation compared to standard discrete capacitors. The series is widely used in military, aerospace, and industrial sectors where reliable EMI suppression and mechanical durability are critical requirements.

Replacement Considerations

The 4403-031 is listed as an alias; however, verify if the non-LF version meets environmental requirements. Cross-reference with other 4403 series variants like 4403-033LF for different voltage ratings while maintaining similar physical dimensions.