american accurate components, metal foil current sense resistors the content of this spec ification may change without notification 09/01/08 188 technology drive, unit h irvine, ca 92618 tel: 949-453-9888 ? fax: 949-453-8889 1 custom solutions are available . lr series - metal foil cu rrent sense resistor *aac has the ability to manufacture + 2% tolerance as an option based on customer?s requirement. how to order lr01 r005 j m packaging m = tape/reel (4k/reel, embossed tape) tolerance (%) f = + 1 g = + 2* j = + 5 eia resistance value r005 = 0.005 ? (5m ?) r002 = 0.002 ? (2m ?) r001 = 0.001 ? (1m ?) series size lr01 = 2512, lr12=2010, lr18=1206 dimensions (mm) size l w a t 2512 6.4 0.2 3.2 0.2 2.0 0.2 ( 2m ? ) 0.9 0.2 ( > m ? ) 0.6 0.2 2010 5.0 0.2 2.5 0.2 0.6 0.3 0.7 0.2 1206 3.3 0.2 1.6 0.2 0.5 0.2 0.7 0.2 rating type lr18 = 1206 lr12 = 2010 lr01 =2512 power rating 1/4w & 1/2w 1w 1w 2w resistance value 5~20m ? 3~30m ? 1~50m ? 1~10m ? operation temperature range -55 c~+170 c temperature coefficient of resistance 275ppm/ c r 1m ? 100ppm/ c 1m ? < r 10m ? 75ppm/ c r > 10m ? tolerance 1%, 2%, 5% insulation resistance over 100m ? maximum working voltage (v) (p*r) 1/2 derating curve if the ambient temperature exceeds 70c, the rated power has to be derated according to the power derating curve shown to the right. features ? ultra low resistances (down to 1m ? ) suitable for large current detecting ? extremely low tcr ? over coating: molding compound ul-94 v-0 grade applications ? power unit (vrm) for cpu ? battery charges ? power supply ? dc/dc converter
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