B82721A2401N023

Overview

The B82721A2401N023 is a current-compensated ring core double choke from the EPCOS (TDK Electronics) B82721A series. It features a ferrite core with epoxy coating and a polycarbonate case, designed for power line applications up to 250 V AC. The component provides an inductance of 6800 µH with a rated current of 1.2 A and a DC resistance of 0.28 Ω. It utilizes a sector winding technique to achieve high resonance frequency and low stray inductance. The device supports through-hole mounting with dimensions of 17.9 mm length, 17.3 mm width, and 12.6 mm height, operating within a temperature range of -40°C to +125°C.

Feature Summary

• High resonance frequency achieved through specialized sector winding techniques
• Low stray inductance of approximately 1% for effective symmetrical interference suppression
• Current-compensated design suitable for wave soldering processes
• Compliant with EN 60938-2 standards and holds UL/VDE approvals

Applications

• Suppression of common-mode interferences in electronic circuits
• Electronic ballasts in lighting systems
• Switch-mode power supplies

Procurement Notes

Verify the specific suffix N023 against official TDK/EPCOS documentation to confirm packaging and tape-and-reel specifications. Ensure the ordering code matches the exact inductance and current ratings required for your circuit design. Cross-reference the manufacturer's latest datasheet for any updates on material composition or compliance status prior to final procurement decisions.

Selection Notes

Select this component when designing power lines requiring current-compensated filtering with high inductance values. The 1.2 A rated current and 6800 µH inductance make it suitable for applications needing robust common-mode noise reduction. Consider the horizontal mounting footprint and thermal characteristics when integrating into dense PCB layouts or enclosed power supply units.

Part Context

This part belongs to the B82721A/K series of current-compensated ring core double chokes manufactured by EPCOS, now part of TDK Electronics. These components are engineered for power line filtering, offering high reliability and compact dimensions. The series is widely used in industrial and consumer electronics where efficient electromagnetic interference suppression is critical for stable operation.

Replacement Considerations

Check for direct substitutes within the B82721A series with compatible inductance and current ratings. Verify mechanical compatibility and electrical parameters before substituting with other manufacturers' common mode chokes.