RC0402FR-0733RL

RC0402FR-0733RL is a 33 Ω ±1% thick-film chip resistor from Yageo in a 0402 (1005 metric) case — Yageo's per-part specification sheet heads it 'YAGEO, RC, Thick Film, SMD Chip, 33 Ohms, 1%, 0402 / 1005', with 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. Working-voltage boundary for this value: the 50 V maximum is the platform ceiling for the case size, not a voltage this 33 Ω part can work at continuously — its 0.063 W rating at 70 °C caps the continuous working voltage at about 1.4 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 series-termination value: 33 Ω is the standard source-termination and damping value for clock and data lines, where the resistor sits in the signal path and its job is impedance, not power. Selection advice: at this value the electrical constraint is power rather than the 50 V platform ceiling — 33 Ω at 0.063 W reaches its dissipation limit at about 1.4 V — and the layout constraint is placement: the part belongs within millimetres of the driver pin, and a reel of the neighbouring 22 Ω code is a layout-identical but electrically different part, so verify the value field on the reel label at kitting.