rcme vishay sfernice molded metal film resistors low temperature coefficient, high precision www.vishay.com for technical questions, contact: sfer@vishay.com document number: 52010 174 revision: 06-oct-09 the rcme range of metal f ilm resistors represents a significant 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 film technology. features ? 0.125 w to 0.25 w at 85 c ? very low temperature coefficient: 5 ppm/c and 10 ppm/c ? very tight tolerances: down to 0.1 % ? electrical insulation > 10 7 m ? climatic category - 65 c/+ 155 c /56 days ? excellent frequency performance ? termination = pure matte tin ? compliant to rohs directive 2002/95/ec dimensions in millimeters series a ? b ? c weight (g) rcme02 6.5 0.2 2.4 0.1 0.6 0.26 rcme05 10.2 0.2 3.65 0.1 0.6 0.46 a 25 min. 25 min. ? b ? c technical specifications vishay sfernice series rcme02 rcme05 power rating at 85 c 0.125 w 0.25 w ohmic range 100 to 750 k resistance tolerance 0.1 %, 0.2 %, 0.5 %, 1 % nominal temperature coefficient in the range - 20 c to + 85 c k6 10 ppm/c k8 5 ppm/c maximum voltage 300 v 350 v insulation resistance > 10 7 m voltage coefficient 0.0001 %/v environmental specifications - 65 c/+ 155 c/56 days
document number: 52010 for technical questions, contact: sfer@vishay.com www.vishay.com revision: 06-oct-09 175 rcme molded metal film resistors low temperature coef ficient, high precision vishay sfernice power rating temperature coefficient the temperature coeffici ent is guaranteed between - 20 c to + 85 c. the limits of tcr are: k 8 5 ppm/c and k 6 10 ppm/c for use outside the range - 20 c or + 85 c, limiting values of temperature coefficient ar e given in the graph above. performance en140-100 maximum values and drifts tests conditions load life at maximum category temperature 1000 h at + 155 c/0 % of p n 0.15 % or 0.05 short time overload 2.5 u m /5 s limited to 2 u n 0.01 % or 0.05 damp heat humidity (steady state) 56 days with low load 0.15 % or 0.05 rapid temperature change - 55 c + 155 c 0.05 % or 0.05 climatic sequence - 55 c + 155 c severity 1 0.15 % or 0.05 insulation resistance > 10 6 m terminal strength pull - twist - 2 bends 0.05 % or 0.05 vibration severity 55b 0.05 % or 0.05 soldering (thermal shock) + 260 c 10 s 0.05 % or 0.05 load life cycle 90?/30? 1000 h at p n at 85 c 0.05 % or 0.05 shelf life 1 year ambient temperature 0.03 % or 0.05 100 50 0 rated power in % ambient temperature in c 0 30 50 70 8 5 110 130 155 + 12 + 10 + 7 + 5 - 5 - 7 - 10 - 12 - 55 - 20 0 + 40 + 8 0+ 8 5 + 120 + 155 0 tcr limits ambient temperature in c positive limit k6 positive limit k 8 ne g ative limit k 8 ne g ative limit k6
rcme vishay sfernice molded metal film resistors low temperature coef ficient, high precision www.vishay.com for technical questions, contact: sfer@vishay.com document number: 52010 176 revision: 06-oct-09 marking printed: vishay sfernice trademark, series, style (in full or abbreviated), ohmic value (in ), tolerance (in %), temperature coefficient, manufacturing date. global part number information global model size special ohmic value tolerance temperature coefficient pac k ag i n g rcme 02 05 as applicable. contact us. the first four digits are significant figures and the last digit specifies the number of zeros to follow. r designates decimal point. 13001 = 13 k 33001 = 33 k 220r0 = 220 1r220 = 1.22 b = 0.1 % a = 0.2 % d = 0.5 % f = 1 % y = k6, 10 ppm/k z = k8, 5 ppm/k am500 = a20 bag100 = s14 bag10 = s03 e02 130 1 y 1 c m r 0fs 4
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