B82721S0572A020

Overview

The B82721S0572A020 is a surface-mount common mode choke manufactured by EPCOS (TDK Electronics). It features a current-compensated ring core design with a ferrite core, housed in a polycarbonate case with polyurethane potting. The component provides an inductance of 590 µH measured at 100 kHz and supports a rated current of 5.7 A. It has a DC resistance of 17 mOhm per line. The device is RoHS3 compliant and meets UL 94 V-0 flame retardancy standards for its case and potting materials.

Feature Summary

• Current-compensated ring core double choke construction utilizing a ferrite core for symmetrical interference suppression.
• High resonance frequency achieved through specialized sector winding techniques.
• Polycarbonate case and polyurethane potting ensure structural integrity and flame retardancy.
• Low stray inductance of approximately 1% facilitates effective common mode noise attenuation.

Applications

• Switching power supply input filtering
• High-frequency signal line protection
• Data and communication interface noise suppression

Procurement Notes

Verify the specific ordering code B82721S0572A020 against manufacturer datasheets to confirm RoHS3 compliance and package dimensions. Ensure the supplier provides traceability documentation for genuine TDK/EPCOS components. Cross-reference the 590 µH inductance and 5.7 A current ratings with system requirements before procurement.

Selection Notes

Select this component when high current handling up to 5.7 A is required alongside significant common mode noise reduction. The surface mount package suits automated assembly processes. Consider the low DC resistance for efficiency-sensitive power lines. Verify that the 590 µH inductance value aligns with the target switching frequency and filtering specifications.

Part Context

This part belongs to the B82721 series of current-compensated ring core double chokes from EPCOS, now integrated into TDK Electronics' portfolio. The series is designed for power line applications requiring robust electromagnetic interference suppression. The S suffix typically denotes surface mount packaging variants within this product family.

Replacement Considerations

Consult official TDK/EPCOS substitution guides for compatible alternatives. Similar series members include B82721S0322A020 or B82721S0562A030, though inductance and current ratings differ. Verify pin compatibility and thermal characteristics before substituting.

FAQ

What is the DC resistance of the B82721S0572A020?

The DC resistance is 17 mOhm per line.

Is the B82721S0572A020 RoHS compliant?

Yes, the component is RoHS3 compliant.