B82791H2302N010

Overview

The B82791H2302N010 is a compact current-compensated ring core double choke manufactured by EPCOS (TDK Electronics). It features a through-hole vertical package with four pins and measures 17.6 mm in length, 15.3 mm in width, and 7.4 mm in height. The component has a rated voltage of 250 V AC at 50 Hz or 60 Hz and a nominal current rating of 3 A without derating at +70°C ambient temperature. Inductance values within this series range from 14 µH to 100 µH, with specific variants available for different current requirements.

Feature Summary

• Provides effective common-mode filtering at frequencies exceeding 300 MHz due to special core materials and absence of potting compounds.
• Features high stray inductance up to 10%, enabling effective suppression of symmetric interference alongside common-mode noise.
• Constructed with plastic materials meeting UL94 V-0 standards and satisfying GWIT (+775°C), GWFI (+850°C), and ball pressure (+125°C) specifications.

Applications

• Design-stage EMC fine-tuning on finished PCBs
• LED driver circuits
• Switching power supply applications

Procurement Notes

Verify the specific inductance value required, as the B82791H2302N010 designation indicates a 3 A rated current variant within a series offering multiple inductance options ranging from 14 µH to 100 µH. Confirm that the through-hole vertical mounting style fits the mechanical constraints of the target assembly. Ensure the operating environment does not exceed the +70°C nominal ambient temperature limit for full current capacity.

Selection Notes

Select this component when space-constrained designs require high-frequency common-mode filtering above 300 MHz. The current-compensated ring core design allows for higher resonance frequencies and better saturation capabilities compared to potted alternatives. Consider the 3 A current rating and 250 V AC voltage rating to ensure compatibility with the specific power line requirements of the application.

Part Context

This component belongs to the B82791H* series of small current-compensated ring core double chokes designed for very high frequencies. These EMC components are engineered to be extremely compact, facilitating integration into dense electronic assemblies. The series complies with EN 60938-2 (VDE 0565-2) standards and RoHS directives, ensuring suitability for global market deployment in consumer and industrial electronics.

Replacement Considerations

Substitute with other B82791H series variants such as B82791H2152N010 (1.5 A) or B82791H2402N010 (4 A) if current ratings differ. Verify that alternative parts maintain the same physical dimensions (17.6 x 15.3 x 7.4 mm) and pin configuration for direct mechanical replacement.