4300-021LF

Overview

The Tusonix 4300-021LF is an axial lead EMI feedthrough capacitor designed for high-frequency noise suppression. It features a capacitance of 500 pF with a maximum DC voltage rating of 300 V and a rated current handling capacity of 5 A. The component operates within a temperature range of -55°C to +125°C. Its physical dimensions are characterized by a diameter of 3.96 mm (0.156 in). This device utilizes a single-feedthrough architecture to provide effective electromagnetic interference filtering in compact electronic assemblies.

Feature Summary

• Provides effective attenuation of high-frequency electromagnetic interference through a single-feedthrough design.
• Capable of handling significant direct current loads while maintaining signal integrity.
• Constructed for reliable operation across extreme environmental temperature variations.

Applications

• Power supply input filtering for sensitive electronic equipment
• Electromagnetic interference suppression in communication systems
• Signal line protection in industrial control panels

Procurement Notes

Verify the specific voltage rating requirements against the datasheet, as the 4300 series includes variants with different ratings such as 200V or 100V. Confirm that the axial package style matches the PCB layout constraints. Ensure compliance with relevant environmental regulations if RoHS status is critical for the final assembly, as specifications may vary by production batch.

Selection Notes

Select this component when a low-capacitance value is required for high-voltage applications up to 300 VDC. The axial form factor is suitable for panel mounting or wire-to-board connections where space allows for linear orientation. Consider the thermal operating limits and current carrying capacity to ensure the filter does not exceed its rated performance under maximum load conditions.

Part Context

This part belongs to the Tusonix 4300 series of feedthrough capacitors, which are engineered for robust EMI/RFI suppression. The series offers various capacitance and voltage combinations in an axial configuration. These components are widely used in military, aerospace, and industrial sectors due to their reliability and ability to handle harsh electrical environments.

Replacement Considerations

Check for exact pinout compatibility and dimensional fit before substituting. Verify that alternative parts meet the same 500 pF capacitance and 300 V rating. Ensure the replacement component supports the required 5 A current rating and operates within the specified temperature range without degrading insertion loss performance.

FAQ

What is the maximum DC voltage rating for the 4300-021LF?

The maximum DC voltage rating for this component is 300 V.

Does the 4300-021LF support high current loads?

Yes, it is rated to handle a maximum DC current of 5 A.