B82731H2601A030

Overview

The EPCOS B82731H2601A030 is a radial power line choke from the B82731H series, featuring a ferrite core and rated for 250 V AC. It provides an inductance of 27 mH with a maximum DC current of 700 mA and a DC resistance of 1 Ω. The component operates within a temperature range of -40°C to +125°C and has a maximum self-resonant frequency of 10 kHz at a test frequency of 10 kHz. Physical dimensions include a height of 15.5 mm, depth of 20 mm, length of 21 mm, lead pitch of 12.5 mm, and lead diameter of 0.6 mm.

Feature Summary

• Utilizes a closed magnetic circuit with a frame construction made of ferrite and a PET coil former.
• Features a 4-section winding directly wound on the core for efficient electromagnetic interference suppression.
• Complies with international safety standards including EN, ENEC, UL, IEC, VDE, and RoHS.

Applications

• Electromagnetic interference (EMI) suppression in AC power lines
• Power supply input filtering for electronic equipment
• Common mode noise reduction in household appliances

Procurement Notes

Verify the specific part number suffix against official TDK/EPCOS documentation to confirm exact electrical tolerances and packaging configurations. Ensure that the selected variant meets the required safety certifications for the target market, such as UL or VDE, as these are critical for compliance in power line applications.

Selection Notes

Select this component when high inductance values are required for effective low-frequency noise attenuation in single-phase AC circuits. The wide operating temperature range and robust ferrite core construction make it suitable for demanding industrial and consumer environments where thermal stability and long-term reliability are essential.

Part Context

This component belongs to the B82731H series of power line chokes manufactured by EPCOS, now part of TDK Electronics. The series is designed for common mode noise suppression in AC mains applications, offering various inductance values and current ratings to suit different power line requirements while maintaining compact physical dimensions.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Ensure replacement parts match the 27 mH inductance, 700 mA current rating, and 250 V AC voltage rating. Verify compatibility with existing PCB footprint dimensions and lead pitch specifications.