B82731M2901A030

Overview

The B82731M2901A030 is a power line common mode choke manufactured by EPCOS, now part of TDK Electronics. This component features a double choke construction with a current-compensated ring core and frame core design, optimized for suppressing common-mode noise in AC power lines. It provides an inductance of 15 mH at 10 kHz and supports a rated current of 900 mA. The typical DC resistance is 600 mOhm, and it is rated for 250 V AC. The device operates within a temperature range of -40°C to 125°C and utilizes a vertical package with four PC pins for mechanical and thermal protection.

Feature Summary

• Current-compensated double choke construction using ring and frame cores for effective common-mode noise suppression
• Vertical enclosure style with four PC pins providing mechanical stability and thermal dissipation
• Designed for AC power line applications with high voltage rating and wide operating temperature range

Applications

• AC power line filtering in electronic equipment
• Common-mode noise suppression in industrial electronics
• Power supply input stages requiring EMI reduction

Procurement Notes

Verify the manufacturer designation as EPCOS or TDK Electronics on official documentation. Confirm the specific ordering suffix matches the required inductance and current ratings. Ensure the package dimensions and pin configuration align with the target PCB layout. Check for any recent lifecycle status updates regarding availability and replacement recommendations from the supplier.

Selection Notes

Select this component when common-mode noise attenuation is critical in AC power inputs. The 15 mH inductance at 10 kHz offers significant impedance to high-frequency interference. The 900 mA current rating suits moderate power applications. Consider the vertical mounting style for space-constrained boards requiring robust mechanical fixation. Evaluate the 600 mOhm DC resistance impact on system efficiency.

Part Context

This part belongs to the B82731 series of power line chokes from EPCOS/TDK. These components are engineered for electromagnetic compatibility (EMC) in mains-powered devices. The series typically includes various inductance and current combinations to meet diverse regulatory standards for conducted emissions. The B82731M2901A030 represents a specific configuration within this family tailored for 250V AC environments.

Replacement Considerations

Consult TDK Electronics official substitution guides for direct equivalents. Verify that alternative parts match the 15 mH inductance, 900 mA current rating, and 250V AC voltage specification. Ensure physical footprint compatibility for the vertical 4-pin package. Cross-reference datasheets for identical operating temperature ranges and DC resistance values.