As automobile manufacturers impose tougher EMC requirements, automotive electrical applications increase and the degree of networking in present and future vehicles rises, demand for CAN bus chokes is constantly increasing. These chokes minimise spurious emissions from the automotive electrical system and suppress interference with on-board electronics. Broadband damping of common-mode noise can be set as required with the various choke inductances. Chokes with sectoral coils and higher leakage inductance affect, in particular, differential-mode noise in the data signal and thus any associated interference with the RF signal.
Epcos offers CAN bus chokes in various technologies and sizes to meet this demand. In series B82789, several new types in size EIA 1812 have been developed. Suitable for ambient temperatures up to 150°C, they can satisfy the toughest demands of the automobile industry. The new CAN bus chokes can thus be used in the immediate vicinity of the engine, in gearboxes, engine control units, ABS or power steering systems, to name a few examples.
Like the standard versions, the new CAN bus chokes cover the inductance range from 11 to 100 μH, available with gold-plated or tinned contacts.
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