B82731H2701A030

Overview

The B82731H2701A030 is a current-compensated D-core double choke from the TDK B82731H series, designed for power line applications. It features an inductance of 27 mH with a tolerance of -30% to +50%. The component supports a maximum DC current of 700 mA and has a maximum DC resistance of 1 Ω. Rated for 250 V AC, it operates within a temperature range of -40°C to 125°C. Key electrical characteristics include a self-resonant frequency of up to 10 kHz at a test frequency of 10 kHz. The unit utilizes ferrite core material and radial PC pin termination with a 12.5 mm lead pitch.

Feature Summary

• Current-compensated D-core construction for effective common mode noise suppression
• Ferrite core material optimized for high-frequency interference filtering
• Radial through-hole mounting with standardized lead spacing for PCB integration
• Compliance with major international safety standards including UL, VDE, and ENEC

Applications

• Power line EMI filtering in consumer electronics
• Common mode noise suppression in industrial control systems
• Input stage filtering for AC-powered devices
• Electromagnetic compatibility enhancement in information technology equipment

Procurement Notes

Verify the manufacturer designation as TDK or EPCOS, as both brands are associated with this component lineage. Confirm the full part number B82731H2701A030 matches the required 27 mH inductance and 700 mA rating. Ensure the package type corresponds to radial leads with a 12.5 mm pitch. Check for specific certification requirements such as UL or VDE depending on the target market regulations.

Selection Notes

Select this component when a 27 mH inductance is required for common mode noise reduction in AC power lines. The 700 mA current rating suits low-to-medium power applications. Verify that the operating temperature range of -40°C to 125°C meets environmental conditions. The radial package and 12.5 mm pitch must align with the PCB footprint design. Ensure the 1 Ω DC resistance is acceptable for the circuit's voltage drop constraints.

Part Context

This component belongs to the B82731H series of current-compensated D-core chokes manufactured by TDK Electronics (formerly EPCOS). These components are specifically engineered for power line applications where common mode interference needs attenuation. The series offers various inductance values and current ratings, with this specific part providing 27 mH at 700 mA. The D-core design allows for compact packaging while maintaining high magnetic efficiency.

Replacement Considerations

Check for other parts within the B82731H series with matching 27 mH inductance and 700 mA rating. Verify physical dimensions and lead pitch compatibility before substitution. Ensure equivalent safety certifications are present if required by the application. Consult official TDK/EPCOS documentation for direct cross-reference lists.