B82720A2301N042

Overview

The B82720A2301N042 is a current-compensated ring core double choke designed for power line applications. It features an inductance of 22 mH with a tolerance of -30% to +50%. The component supports a maximum DC current of 300 mA and has a DC resistance of 1.5 Ohms. Rated for 250 V AC, it operates within a temperature range of -40°C to +125°C. The device utilizes through-hole mounting with vertical orientation and measures 13 mm in length, 9.5 mm in width, and 14 mm in height.

Feature Summary

• High resonance frequency achieved through special winding technique
• Approximately 1% stray inductance for symmetrical interference suppression
• Design complies with EN 60938-2 (VDE 0565-2) standards

Applications

• Suppression of common-mode interferences
• Compact electronic ballasts in lamps
• Compact switch-mode power applications

Procurement Notes

Verify the specific suffix N042 against official EPCOS/TDK documentation to confirm vertical mounting and 22 mH inductance specifications. Ensure compatibility with wave soldering processes as indicated in the datasheet. Confirm RoHS compliance status and approval agencies such as ENEC, UR, and VDE for your target market requirements before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring high common-mode rejection with low stray inductance. The vertical through-hole package suits compact PCB layouts where space is limited but mechanical stability is required. Consider the 300 mA current rating and 1.5 Ohm DCR for thermal management in power supply inputs or lamp ballast designs operating at standard mains frequencies.

Part Context

This part belongs to the B82720A/K series of current-compensated ring core chokes manufactured by EPCOS, now part of TDK Electronics. These components are engineered for power line filtering, offering robust performance in suppressing electromagnetic interference. The series covers various inductance values and current ratings, with this specific model providing 22 mH inductance for effective noise reduction in sensitive electronic equipment.

Replacement Considerations

Check for B82720K2301N042 if vertical mounting is acceptable, noting potential differences in packaging or minor electrical tolerances. Verify that any substitute maintains the 22 mH inductance, 300 mA current rating, and 250 V AC voltage rating to ensure circuit compatibility without redesign.