High Power Chip Resistors Model No. Size Code Inch Size Code mm WCR32 WCR50 1206 2010 3216 5025 Features Wide terminal made higher reliability of solder joint, compared to conventional chip resistor. Wide terminal made possible high power handling. (Rated power, WCR50 : 1W, WCR32 : 0.5W) High joint strengh against heat shock. Resistance ranging 10m1M. Applications Automotive electronics such as E.C.U. ,etc. Circuits requiring high resistance to vibration. For current detection. Constructions Symbol Material List Alumina Substrate Electrode Resistive Film Over coat Marking Model Designation WCR32 100 Model No. Model No. 3 or 4 digit (Resistance) (Marking) WCR50 TolerancePackaging Tolerance Resistance WCR32 V J Resistance 0 000 47 4 70 1k 102 1.02 k 1021 Packaging Packaging Symbol Tolerance(%) Symbol F B Bulk J 5 V Paper taping(WCR32) E Embossed taping(WCR50) 0type is no marking Rating Model No. Rated Wattage W Tolerance %) Resistance Range E-24,E-96 Series Standard J(5%) WCR32 0.50 Max.Working Voltage (V) Max. Overload Voltage (V) 200 200 400 200 200 400 10m91m F(1%) 0.11M J(5%) J(5%) WCR50 T.C.R. ppm/) 10m91m F(1%) 1.00 0.11M J(5%) Operating Temp. Range: -55+155 0type Model No. WCR32 Rated Current (A) 2.0 Resistance Max. 50m WCR50 HOKURIKU Specifications are subject to change without notice. High Power Chip Resistors Dimensions L c W Model No. L W c WCR32 3.200.15 1.600.15 0.300.20 WCR50 5.000.20 2.500.20 0.500.20 d t 0.600.20 0.560.15 100 Power rating (%) Power rating For resistors operated in ambient temperature abobe 70, power rating must be derated in accordance with the derating curve. mm) t 0.55 0.500.20 0.15/-0.05 d 80 60 40 20 0 -55 0 70 155 Ambient Temperature () Surface temperature Surface temperature rise is shown in this figure. Condition: : Measured by soldering on glass cloth base material epoxy resin (t=1.6mm). WCR50 Surface temperature () 150 WCR32 100 50 0 50 100 200 300 Power rating (%) Packaging Refer "Dimension, Packaging, etc." HOKURIKU Specifications are subject to change without notice. 2