Frame core power line chokes
2 September 2015
Passive Components
TDK has extended its range of EPCOS frame core power line chokes with the B82733V* series in a vertical design, complementing the existing horizontally designed B82733F* series. The vertical design is particularly advantageous when there is limited space on the printed circuit board.
With an insertion height of 27 mm, for example, the new chokes have a footprint of just 29 x 15,5 mm. This is more than 30% smaller than that of the horizontal version which, with a height of 14 mm, requires an area of 26,5 mm x 24,8 mm. The current-compensated parts are designed for a maximum voltage of 300 V a.c. and offer inductance values of between 10 mH and 100 mH. At an operating temperature of 40°C, the chokes can handle rated currents of between 0,7 A and 2,3 A. Both the plastic frame and the epoxy resin coating meet UL94 V-0 requirements.
In addition to their good common-mode suppression, the chokes feature good differential-mode suppression thanks to their relatively high stray inductance of about 2%. In many cases this means that no additional components for differential-mode suppression are required. The chokes are therefore particularly suitable for new designs of switch-mode power supplies with high switching frequencies.
For more information contact Yolandi de Beer, Avnet South Africa, +27 (0)11 319 8600, [email protected], www.avnet.co.za
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