features resistance value as low as 0.001 ohm high power density inductance less than 5 nh rohs compliant* applications power supplies stepper motor drives crf series - high power current sense chip resistor *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. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. users should verify actual device performance in their speci c applications. *rohs compliant dimensions: mm (inches) electrical characteristics crf1206 crf2512 power rating @ 70 c 1 w (0.001 to 0.010 ) 2 w (0.015 to 0.050 ) 1 w operating temperature range -55 c to +170 c derated to zero load at +170 c maximum working voltage (p x r)1/2 insulation resistance > 100 megohms resistance range 0.01 - 0.02 0.001 - 0.050 resistance tolerance 1 % 1 %, 5 % temperature coef? cient 0.001 to 0.002 ohms 275 ppm/c 0.003 to 0.010 ohms 100 ppm/c 0.015 to 0.050 ohms 75 ppm/c recommended solder pad layout product dimensions resistance range ( ) a b l model 0.01- 1.8 1.9 1.4 crf1206 0.02 (0.07) (0.075) (0.055) 0.001- 4.0 3.1 1.3 crf2512 0.002 (0.157) (0.122) (0.051) 0.003- 4.0 2.1 4.1 0.050 (0.157) (0.083) (0.161) construction overcoat metal alloy plate ni / sn plating derating curve ambient temperature (c) 70 170 100 -55 power ratio (%) a b sensing trace cu trace l a b c cc t c performance characteristics test conditions speci cation thermal shock -55 ?c to + 150 ?c, r (0.5 % + 0.0005 ) 1000 cycles, 15 minutes short time overload 5 x rated power for 5 seconds r (0.5 % + 0.0005 ) low temperature -55 ?c for 24 hours r (0.5 % + 0.0005 ) storage high temperature exposure 1000 hours @ + 170 ?c r (1.0 % + 0.0005 ) bias humidity + 85 ?c, 85 % rh, 10 % bias, r (0.5 % + 0.0005 ) 1000 hours mechanical shock 100 gs for 6 milliseconds, 5 pulses r (0.5 % + 0.0005 ) vibration frequency varied 10 to 2000 khz r (0.5% + 0.0005 ) in one minute, 3 directions, 12 hours load life 1000 hours at rated power at r (1.0% + 0.0005 ) +70 ?c, 1.5 hours on, 0.5 hours off resistance to solder +260 ?c solder, 10-12 second dwell, r (0.5 % + 0.0005 ) heat 25 mm/second emergence moisture resistance mil-std-202 method 106, 0 % power r (0.5% + 0.0005 ) (7a and 7b not required) dim. crf1206 crf2512 a 3.20 0.20 6.40 0.20 (0.126 0.008) (0.252 0.008) b 1.65 0.20 3.20 0.20 (0.064 0.008) (0.126 0.008) c 2.0 0.20 (r 2m ) 0.5 0.3 (0.079 0.008 (r > 2m )) (0.0197 0.012) 0.9 0.2 (r > 2m ) (0.035 0.008 (r 2m )) t 0.6 0.20 0.6 0.20 (0.0236 0.008) (0.0236 0.008)
d 0 dia. 1.5 (0.059) dia. min. t a p 1 p 2 p 0 b e f w top tape embossed tape resistor user direction of feed how to order crf 2512 - f x - r010 e lf model (crf = precision chip resistor) size 1206 = 1206 size 2512 = 2512 size resistance tolerance ?f = ? % (available on models crf1206 & crf2512) ?j = ? % (available on model crf2512) tcr (ppm/?) ?z = ?5 ppm/?, 0.015 ohm or greater ?x = ?00 ppm/?, 0.003 ohm through 0.010 ohm ?v = ?75 ppm/?, 0.001 ohm through 0.002 ohm resistance value ??(decimal point) followed by three signi cant digits (example: r025 = 0.025 ohm) packaging ?e = 5,000 pieces (crf1206) or 4,000 pieces (crf2512) on 180 mm (7 inch) reel termination ?lf = tin-plated (rohs compliant) speci cations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. users should verify actual device performance in their speci c applications. crf series - high power current sense chip resistor packaging dimensions (conforms to eia rs-481a) model crf2512 resistance value table rev. 06/13 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) 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> packing model a b w f e p1 p2 p0 d0 t paper tape crf1206 2.0 0.15 (0.079 0.006) 3.6 0.2 (0.142 0.008) 8.0 0.2 (0.315 0.008) 3.5 0.05 (0.138 0.002) 1.75 0.1 (0.069 0.004) 4.0 0.1 (0.157 0.004) 2.0 0.05 (0.079 0.002) 4.0 0.05 (0.157 0.002) 1.5+0.1/-0 (0.059+0.004/-0) 0.85 0.15 (0.033 0.006) embossed tape crf2512 3.60 0.20 (0.142 0.008) 6.9 0.2 (0.272 0.008) 12.0 0.2 (0.472 0.008) 5.5 0.05 (0.217 0.002) 1.75 0.1 (0.069 0.004) 4.0 0.1 (0.157 0.004) 2.0 0.05 (0.079 0.002) 2.0 0.05 (0.079 0.002) 1.5+0.1/-0 (0.059+0.004/-0) 0.85 0.15 (0.033 0.006) model crf1206 resistance value table code r value r010 0.010 r020 0.020 code r value code r value r001 0.0010 r011 0.0110 r0015 0.0015 r012 0.0120 r002 0.0020 r015 0.0150 r003 0.0030 r018 0.0180 r004 0.0040 r020 0.020 r005 0.0050 r025 0.025 r006 0.0060 r030 0.030 r007 0.0070 r033 0.033 r008 0.0080 r040 0.040 r010 0.0100 r050 0.050
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