l w t d c features thick lm technology power rating of 0.25, 0.5 or 1 watt at 70 ? strong pulse performance rohs compliant* applications power supplies stepper motor drives crm0805/1206/2010 chip resistors *rohs directive 2002/95/ec jan. 27, 2003 including annex and rohs recast 2011/65/eu june 8, 2011. speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. general information bourns crm series are thick lm chip resistors with high power ratings making them suitable for different applications in power supply circuits including current sensing, current limiting and high pulse resistance. dimensions: mm (inches) electrical characteristics characteristic model model model crm0805 crm1206 crm2010 power rating @ 70 ? 0.25 w 0.5 w 1 w operating temperature range -55 ? to +155 ? derated to zero load at +155 ? maximum working voltage 47 mohms to 910 mohms 551 mv 675 mv 954 mv 1 ohm to 1 megohm 150 v 200 v 200 v insulation resistance >1000 megohms resistance range 47 mohms to 910 mohms (? % and ? %, e24 series) 1 ohm to 1 megohm (? %, e96 series) 0 ohm, 1 ohm to 1 megohm (? %, e24 series) resistance tolerance ? %, ? % temperature coef cient 47 mohms to 91 mohms (? % and ? %, e24 series) ?00 ppm ?00 ppm (1) ?00 ppm (1) 100 mohms to 910 mohms (? % and ? %, e24 series) ?00 ppm (2) ?00 ppm (2) ?00 ppm 1 ohm to 1 megohm (? %, e96 series) ?00 ppm (3) ?00 ppm ?00 ppm 0 ohm, 1 ohm to 1 megohm (? %, e24 series) ?00 ppm ?00 ppm ?00 ppm characteristic data test r max. load life (1000 hours) rated voltage @ 70 ? (1.5 hrs. on, 0.5 hrs. off) 1 % tolerance < 1 % 5 % tolerance < 3 % short term overload (5 x rated power for 5 sec.) 1 % tolerance < 1 % 5 % tolerance < 2 % thermal shock (5 cycles: -55 ?/30 min.; +25 ?/2-3 min.; +155 ?/ 30 min.; +25 ?/2-3 min.) 1 % tolerance < 0.5 % 5 % tolerance < 1 % a b sensing trace cu trace l *rohs compliant product dimensions recommended solder pad layout model a b l crm0805 1.3 1.15 1.2 (0.051) (0.045) (0.047) crm1206 1.8 1.3 2.1 (0.071) (0.051) (0.083) crm2010 3.0 1.5 3.8 (0.118) (0.059) (0.149) model l w c d t crm0805 2.00 ?0.15 1.20 ?0.15 0.40 ?0.20 0.40 ?0.20 0.50 ?0.10 (0.079 ?0.006) (0.047 ?0.006) (0.016 ?0.008) (0.016 ?0.008) (0.020 ?0.04) crm1206 3.10 ?0.15 1.60 ?0.15 0.50 ?0.25 0.50 ?0.25 0.55 ?0.10 (0.122 ?0.006) (0.063 ?0.006) (0.020 ?0.010) (0.020 ?0.010) (0.022 ?0.004) crm2010 5.00 ?0.20 2.50 ?0.20 0.60 ?0.25 0.60 ?0.25 0.60 ?0.10 (0.197 ?0.008) (0.098 ?0.008) (0.024 ?0.010) (0.024 ?0.010) (0.024 ?0.004) exceptions: (1) 47 mohms to 91 mohms (-25 ? to +55 ?): ?50 ppm (crm2010), ?00 ppm (crm1206) (2) 100 mohms to 910 mohms (-25 ? to +55 ?): ?50 ppm (crm0805) (3) ? %, 1 ohm to 9.76 ohms (-55 ?): ?50 ppm (crm0805) for standard values used in capacitors, inductors and resistors, click here.
speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. crm0805/1206/2010 chip resistors soldering pro le 25 75 125 175 225 275 0 50 100 150 200 250 300 time (seconds) temperature (c) 60 - 120 seconds 90 - 150 seconds 260 ? peak 190 ? 150 ? 220 ? ramp down 6 ?/second 255 ? maximum of 20 seconds between +255 ? and +260 ? ramp up 3 ?/second maximum 10 seconds minimum <1> <1> pulse voltage curve 10000 1000 100 10 1 10 100 1000 resistance (ohms) test method: 1.2/50 s waveform with 12 ohm resistor, 5 pulses at 12 second interval s volts (v) 10000 100000 crm0805 crm1206 crm2010 derating curve ambient temperature (c) 70 155 100 -55 power ratio (%)
rev. 01/13 how to order crm 2010 - f x - r100 e lf model (crm = precision chip resistor) size 0805 = 0805 size 1206 = 1206 size 2010 = 2010 size resistance tolerance ?f = ? % ?j = ? % tcr (ppm/?) ?w = ?00 ppm/? ?z = ?50 ppm/? ?x = ?00 ppm/? resistance value r <1 ohm (1 % or 5 % tolerance: ??(decimal point) followed by three signi cant digits (example: r100 = 0.100 ohm 1% tolerance: <100 ohms ....... ??represents decimal point (example: 24r3 = 24.3 ohms) 100 ohms ....... first three digits are signi cant, fourth digit represents number of zeros to follow (example: 8252 = 82.5k ohms) 5% tolerance: <10 ohms ......... ??represents decimal point (example: 4r7 = 4.7 ohms) 10 ohms ......... first two digits are signi cant, third digit represents number of zeros to follow (example: 474 = 470k ohms) packaging ?e = 5000 pieces on 180 mm (7 inch) reel - crm0805, crm1206 4000 pieces on 180 mm (7 inch) reel - crm2010 termination ?lf = tin-plated (rohs compliant) speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. crm0805/1206/2010 chip resistors packaging dimensions (conforms to eia rs-481a) 60.0 (2.362) min. dia. dia. 180 +0/-3 (7.09 +0/-0.118) 13.0 1.0 (0.512 0.039) dia. 15.4 2.0 (0.606 0.079) 13.0 1.0 (0.512 0.039) dimensions: mm (inches) 1.5 +0.1/-0 (.056 + .004/-0) maximum 1 mm (.040) thick * cumulative over 10 holes: ?.2 mm 1.75 0.1 (.059 .004) b 4.0 0.1 (.157 .004) 2.0 0.05 (.079 .002) a w f p 0 model a b f w crm0805 2.40 ?0.20 1.65 ?0.20 3.50 ?0.05 8.00 ?0.30 (0.094 ?0.008) (0.065 ?0.008) (0.138 ?0.002) (0.315 ?0.012) crm1206 3.57 ?0.20 2.00 ?0.20 3.50 ?0.05 8.00 ?0.30 (0.141 ?0.008) (0.079 ?0.008) (0.138 ?0.002) (0.315 ?0.012) crm2010 5.50 ?0.20 2.80 ?0.20 5.50 ?0.05 12.00 ?0.30 (0.217 ?0.008) (0.110 ?0.008) (0.217 ?0.002) (0.472 ?0.012)
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