B82720K2102N040

Overview

The B82720K2102N040 is a current-compensated ring core double choke designed for power line applications. It features a rated voltage of 250 V AC and supports rated currents ranging from 0.3 A to 2 A within the series, with this specific unit rated at 1 A. The inductance is 3 mH with a tolerance of -30% to +50%. The DC resistance is typically 220 mOhm. It utilizes through-hole mounting with vertical orientation. Dimensions are approximately 13 mm length, 9.5 mm width, and 14.3 mm height. Operating temperature range is -40°C to +125°C.

Feature Summary

• High resonance frequency achieved through special winding technique
• Approximately 1% stray inductance for symmetrical interference suppression
• Suitable for wave soldering processes
• 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 N040 against official EPCOS/TDK documentation to confirm packaging and tape/reel specifications. Ensure the -30%/+50% inductance tolerance aligns with circuit requirements. Confirm RoHS compliance status as per the latest manufacturer declaration. Cross-reference pinout and mechanical dimensions with the official datasheet before PCB layout finalization.

Selection Notes

Select this component for vertical through-hole power line filtering where compact size and high resonance frequency are required. The 3 mH inductance and 1 A current rating suit moderate power applications. Consider the wide inductance tolerance when designing precise filter cutoff frequencies. Verify compatibility with wave soldering if used in automated assembly lines.

Part Context

This part belongs to the B82720A/K series of current-compensated ring core double chokes manufactured by EPCOS (TDK). These components are engineered for power line noise suppression. The series offers various inductance and current ratings to accommodate different power supply designs. The B82720K variant specifically denotes the vertical mounting configuration within this family.

Replacement Considerations

B82720S2301N042

FAQ

What is the stray inductance value of the B82720K2102N040?

The stray inductance is approximately 1%, which facilitates symmetrical interference suppression.

Is the B82720K2102N040 suitable for wave soldering?

Yes, the design is explicitly stated to be suitable for wave soldering processes.