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ar, fcr, rca, rcn series are formed by vacuum depositing a resistive alloy on a usually flat substrate of ceramic.
photo-lithographic or similar techniques are used to define the final geometry and interconnecting traces.
this technology provides for close ratio matching and tracking in a network, as well as low stand-alone temperature coefficient and resistance tolerance.
types includes ultra precision (ar), precision (fcr), array (rca), and networks (rcn).