document number: 52010 revision 23-aug-02 www.vishay.com 34 RCME vishay sfernice for technical questions, contact sfer@vishay.com features 0.125w to 0.25w at 85c very low temperature coef? cient: 5 and 10ppm/c very tight tolerances: up to 0.1% electrical insulation >10 7 m ? climatic category ? 65 c/+ 155 c/56 days high frequency performance molded metal film resistors low temperature coef cient, high precision the RCME range of metal film resistors represents a signi ? cant technical advancement in resistive technology combining low temperature coefficients with high environmental stabilities, and high frequency performance. laser beam trimming gives tolerance accuracies from 0.1% to 1%. the RCME range effectively bridges the gap that has hitherto existed between the high precision, high stability foil or wirewound technology and conventional ? lm technology. dimensions in millimeters dimen- sions a 6.5 0.2 2.4 0.1 3.65 0.1 10.2 0.2 RCME02 RCME05 0.6 0.6 0.26 0.46 b c unit weight in g series vishay sfernice series power rating at 85 c ohmic range resistance tolerance maximum voltage nominal temperature coefficient in the range 20 + 85 c insulation resistance voltage coefficient environmental specifications k6 10ppm/ c k8 5ppm/ c ? 65 c / + 155 c / 56 days >10 7 m ? 0.0001% / volt 0.1% - 0.2% - 0.5% - 1% 100 ? to 750k ? 0.125w 300v 350v RCME02 0.25w RCME05 technical specifications 25 min. 25 min. a ? c ? b
www.vishay.com 35 RCME vishay sfernice document number: 52010 revision 23-aug-02 for technical questions, contact sfer@vishay.com ambient temperature in degrees celsius % rated power 100 50 0 0 30 50 70 85 110 130 155 power rating chart temperature coefficient 0 ambient temperature in degrees celsius t.c. limits +12 +10 +7 +5 5 7 10 12 55 20 0 + 40 80 + 85 + 120 +155 positive limit k6 positive limit k8 negative limit k8 negative limit k6 molded metal film resistors low temperature coef ? cient, high precision tests nf c 83-230 load life at max. category temperature short time overload damp heat humidity (steady state) rapid temperature change climatic sequence terminal strength vibration soldering (thermal shock) load life shelf life 1000 h at + 155 c 0% of pn 0.15% or 0.05 ? 0.01% or 0.05 ? 0.15% or 0.05 ? 0.05% or 0.05 ? 0.05% or 0.05 ? 0.05% or 0.05 ? 0.05% or 0.05 ? 0.05% or 0.05 ? 0.03% or 0.05 ? 0.15% or 0.05 insulation resist. >10 6 m ? 2.5 um/5 s limited to 2 un 56 days with low load ? 55 c + 155 c ? 55 c + 155 c severity 1 pull - twist - 2 bends severity 55b + 260 c 10 s cycle 90 ? /30 ? 1000 h at pn at 85 c 1 year ambient temperature conditions maximum values and drifts performance the temperature coefficient is guaranteed between ? 20 c + 85 c. the limits of t.c. are : k 8 5ppm/ c and k 6 10ppm/ c for use outside the range ? 20 c or + 85 c, limit values of temperature coef ? cient are given in the graph above.
document number: 52010 revision 23-aug-02 www.vishay.com 36 RCME vishay sfernice for technical questions, contact sfer@vishay.com marking printed: sfernice trademark, series, style (in full or abbreviated) , ohmic value (in ? ), tolerance (in %), temperature coef ? cient, manufacturing date. 02 special design style series RCME tolerance 0.1% ohmic value 100k ? ordering information method n optional packaging optional temperature coefficient k6 molded metal film resistors low temperature coef ? cient, high precision
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