RT0402BRD072KL

RT0402BRD072KL is a 2 kΩ ±0.1% thin-film chip resistor from Yageo in a 0402 (1005 metric) case, documented by Yageo's per-part specification sheet: rated power 0.063 W at 70 °C, temperature coefficient ±25 ppm/°C across −55 °C to +155 °C, maximum continuous working voltage 50 V and overload voltage 100 V. One figure deserves its own sentence because it breaks the platform pattern: the dielectric withstanding voltage of this code is 75 V, not the 100 V of its RC0402 neighbours — verified character by character against Yageo's sheet. Working-voltage boundary for this value: the 50 V maximum is the platform ceiling for the case size, not a voltage this 2 kΩ part can work at continuously — its 0.063 W rating at 70 °C caps the continuous working voltage at about 11.2 V (the square root of allowable power x resistance), and that cap falls as temperature derates the allowable power; the governing limit is always the lower of the two. The selection point is thin-film accuracy in the smallest case: ±0.1% and ±25 ppm for precision positions that cannot grow to 0603. Selection advice: if your hi-pot or isolation test plan assumed the 100 V platform figure, this is the code where that assumption fails — design against 75 V.