features applications model designation rating high power low resistance chip resistors 1 hokuriku specifications are subject to change without notice . ? high power type, milliohm resistor produc t. low resistance range covers from 10m . ? wide terminal made higher reliability of solder jo int, compared to conventional chip resistor. ? wide terminal made possible high power handling. (rated power, wlcr64: 2w, wlcr50: 1w, wlcr32: 0.5w ) ? high joint-strength against heat shock. ? automotive electronics su ch as e.c.u., etc. ? circuits requiring high resistance to vibration ? for current detection wlcr32 r10 j v model no. resistance tolerance packaging model no. rated wattage tolerance resistance t.c.r. max. working max. overload (w) (%) (m ? )(ppm/ ) voltage (v) voltage (v) 10 33 500 36 91 350 100 910 200 f: 1% 100 976 200 10 33 500 36 91 350 100 910 200 f: 1% 100 976 200 10 33 500 36 91 350 100 910 200 f: 1% 100 976 200 operating temperature range : -55 155 400 wlcr64 2.0 j: 5% 200 400 wlcr50 1.0 j: 5% 200 400 wlcr32 0.5 j: 5% 200 model no. wlcr32 symbol tolerance(%) symbol packaging wlcr50 f 1.0 b bulk wlcr64 j 5.0 v paper taping (wlcr32) 10m ? r010 470m ? r47 102m ? r102 tolerance pckging 3 or 4 digit resistance embossed taping (wlcr50,wlcr64) (example) e (less than 100m ? : all 4 digit model no. wlcr32 wlcr50 wlcr64 size code inch 1206 2010 2512 size code mm 3216 5025 6432
dimensions structure surface temperature for resistors operated in ambient temperature above70 , power rating must be derated in accordance with the derating curve. surface temperature surface temperature rise is shown in this figure. condition : measured by soldering on glass cloth base material epoxy resin (t=1.6mm). packaging refer "dimension, packaging, etc." 2 hokuriku specifications are subject to change without notice high power low resistance chip resistors l c d w t model no. l w c d t wlcr32 3.200.15 1.600.15 0.300.20 0.500.20 0.55 0.15/-0.05 wlcr50 5.000.20 2.500.20 0.500.20 0.600.20 0.560.15 wlcr64 6.300.20 3.200.20 0.500.20 0.900.20 0.560.15 ?? symbol material list ceramic substrate conductor resistor over coat marking side electrode 100 0 80 60 40 20 -55 0 70 155 power rating (%) ambient temperature( ) 150 100 50 0 100 200 300 50 power rating (%) surface temperature ( ) wlcr50 wlcr64 wlcr32 unit : mm
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