Thin-film resistor TF series

LVceramic-housed

RCD’s TF Series construction consists of a thermal fuse welded in series with a resistor element. The assembly is potted inside a ceramic case (model TFR fuse is mounted externally in order to provide field-replaceability of the fuse). Under overload conditions, the thermal fuse “senses” the temperature rise of the resistor element and opens upon reaching a predetermined temperature. Devices can be custom tailored to specific fault conditions and do not require the large power overloads necessary with other fuse resistors to achieve proper fusing. Thus, the TF Series offers great safety, since high temperatures are not involved to achieve fusing. Typical applications include telecom line cards, repeaters, trunk carrier systems, RFI suppression, power supply, medical, and automotive circuits.