RC0402FR-071KL

RC0402FR-071KL is a 1 kΩ ±1% thick-film chip resistor from Yageo in a 0402 (1005 metric) case, documented by Yageo's per-part specification sheet: temperature coefficient ±100 ppm/°C across −55 °C to +155 °C, maximum continuous working voltage 50 V and overload voltage 100 V, on the RC0402 platform rated 0.063 W at 70 °C, supplied on tape and reel. Working-voltage boundary for this value: the 50 V maximum is the platform ceiling for the case size, not a voltage this 1 kΩ part can work at continuously — its 0.063 W rating at 70 °C caps the continuous working voltage at about 7.9 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 the most-specified resistor value in electronics at platform-standard accuracy: LED current setting, pull-ups and interface termination in the smallest mainstream case. Selection advice: 1 kΩ is where look-alike errors happen — the same series carries 1R (RC0402FR-071RL-class codes) and 100R values whose strings differ by one field; verify the full code against the BOM rather than the value you expect to see.