The first resistor product to offer a temperature coefficient of resistance (TCR) of 0.2 ppm/°C (-55°C to +125°C) - an industry breakthrough - has been announced by Vishay Foil Resistors. The Vishay Z201 Bulk Metal foil resistor combines the lowest ever TCR with tolerance to 0.005%. The Z201 ultra-performance aerospace and instrumentation resistor, housed in a through-hole package, will be used for precision analog applications in test and measurement equipment, telecommunication test circuits, process control, and guidance circuits.
Built on Vishay's proprietary foil technology, the Z201 series is the third in a series of ultra-precision resistors since the first Bulk Metal foil resistor was introduced by Vishay in 1962. Its nominal TCR was reduced to -0.2 ppm/°C from -55°C to +25°C and +0.2 ppm/°C from +25°C to +125°C. This is a five-fold TCR improvement over the best previously available foil resistor and a ten-fold improvement over standard foil resistors.