our parts are ideal for use in direct current (d.c.) electrical circuits & compliant with international directives, see environmental regulations link along the left side of the page. prc specializes in wire wound resistors, sensors, shunts & rtd compensators featuring highly stable artificially aged components featuring close precision tolerances from ±1% to ±0.005% and low temperature coefficients (t.c.) to 0±1 ppm/°c., designed to emit extremely low emf. we have a wide array of sizes & styles available, including two & four terminal axial lead or surface mount. also available are mil-r & printed circuit styles with delivery available in bulk packaging as well as tape & reel. in addition to our standard catalog parts, we have custom temperature sensitive rtds with (+) tcrs from +1400 ppm/°c. to +6000 ppm/°c., including a custom one of a kind special platinum din alternative which follows the slope of platinum din very closely at a fraction of the cost.