ELF-18D221F

Common Mode Chokes Overview

The ELF-18D221F is a common mode choke manufactured by Panasonic Electronic Components. It features a wirewound construction with an unshielded design and ferrite core material. The component has a nominal inductance of 33 mH with a tolerance of 20%. It supports a maximum DC current rating of 400 mA and exhibits a typical DC resistance of 1.79 Ohms. The device is rated for AC voltages up to 250 V and operates within a temperature range of -20°C to +105°C. Physical dimensions are approximately 20.00 mm x 21.00 mm, utilizing through-hole radial mounting.

Common Mode Chokes Feature Summary

• Provides common mode noise suppression for line filter applications
• Utilizes wirewound technology with a ferrite core for stable inductance
• Designed for through-hole PCB mounting with standard leads

Common Mode Chokes Applications

• Line filters
• Power supply input filtering
• EMI suppression in electronic equipment

Common Mode Chokes Procurement Notes

Verify the exact inductance value as sources vary between 22 mH and 33 mH. Confirm the manufacturer designation, as some listings reference Panasonic Semiconductor or Industry. Check RoHS compliance status directly from official documentation. Ensure the lead pitch and physical dimensions match the target PCB layout requirements before integration.

Common Mode Chokes Selection Notes

Select this component for applications requiring high inductance values in a common mode configuration. The 400 mA current rating suits low-power signal lines or specific power stages. Verify that the 1.79 Ohm DC resistance is acceptable for the circuit's voltage drop constraints. Ensure the operating temperature range meets the environmental conditions of the final assembly.

Common Mode Chokes Part Context

This part belongs to the ELF series of common mode chokes produced by Panasonic. These components are typically used for electromagnetic interference (EMI) reduction. The series offers various inductance values and current ratings to suit different filtering needs in consumer and industrial electronics.

Common Mode Chokes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Cross-reference with other Panasonic ELF series parts only if electrical parameters and mechanical dimensions are verified to be identical.