B82721K2601N020

Overview

The B82721K2601N020 is a current-compensated ring core double choke manufactured by EPCOS (TDK Electronics). It features a ferrite core and is designed for power line applications with a rated voltage of 250 V AC. The component provides an inductance of 15 mH per line at a rated current of 600 mA. It utilizes a sector winding technique to achieve high resonance frequency and low stray inductance, ensuring symmetrical interference suppression. The device is housed in a polycarbonate case with polyurethane potting, offering flame retardancy compliant with UL 94 V-0 standards.

Feature Summary

• Current-compensated ring core construction with ferrite core for efficient magnetic circuit closure
• Sector winding technique ensures high resonance frequency and approximately 1% stray inductance
• Polycarbonate case and polyurethane potting provide mechanical stability and environmental protection
• Flame-retardant materials meet UL 94 V-0 safety requirements

Applications

• Power line filtering in electronic equipment
• Symmetrical interference suppression in AC mains circuits
• Common mode noise reduction in general purpose power supplies

Procurement Notes

Verify the specific suffix N020 against official TDK/EPCOS documentation to confirm lead time and availability status. Ensure the ordering code matches the exact inductance and current ratings required for your design. Cross-reference the manufacturer's latest datasheet for any updates on RoHS compliance or packaging specifications before finalizing procurement orders.

Selection Notes

Select this component when designing circuits requiring common mode chokes for 250 V AC power lines with a continuous current rating of 600 mA. The 15 mH inductance value is suitable for standard EMI filtering applications. Consider the through-hole mounting style and physical dimensions during PCB layout planning to ensure adequate clearance and mechanical fit within the enclosure.

Part Context

This part belongs to the B82721 series of current-compensated ring core double chokes from EPCOS/TDK. These components are engineered for robust performance in power line applications, combining high inductance with low stray inductance due to their specific winding geometry. The series is widely used in industrial and consumer electronics for effective electromagnetic interference mitigation.

Replacement Considerations

Consult official TDK/EPCOS substitution guides for verified alternatives. Ensure replacement parts match the 15 mH inductance, 600 mA current rating, and 250 V AC voltage specification. Verify that any substitute maintains the same ring core construction and UL 94 V-0 flame retardancy for equivalent safety and performance.

FAQ

What is the stray inductance characteristic of the B82721K2601N020?

The component exhibits approximately 1% stray inductance due to its special sector winding technique, which supports symmetrical interference suppression.

What material is used for the case and potting?

The choke uses a polycarbonate case and polyurethane potting, both of which are flame-retardant and comply with UL 94 V-0 standards.