The Z201 (0.150" lead spacing) and Z201L (0.200" lead spacing) Bulk Metal® Z-Foil resistors represent an industry breakthrough. This is the 3rd in a series of ultra-precision resistors since the first Bulk Metal® Foil resistor was introduced by Vishay in 1962. Each represents an improvement on the earlier model. The TCR slope of the Z201 is 0.2 ppm/°C (- 55 °C to + 125 °C, + 25 °C Ref.) and is an order of magnitude better than the original S102C. The Bulk Metal® Z-Foil resistor is the ultimate choice in the most demanding analog applications.