Wirewound Resistor with Ther mal Cut-offs Wirewound Resistor with Ther mal Cut-offs Type: ERU5T Features Accurate fusing characteristics Low cost and easy handling Space saving design Excellent anti-surge characteristics RoHS compliant Recommended Applications Switching regulators, video adapters, safety circuits Explanation of Part Numbers 1 2 3 4 5 6 7 8 9 10 & 3 6 5 , 3 Thermal Cut-offs Product Code Element Style Resistance Resistance Value Tolerance Fusing Code Power Code Style Code Voltage Current Temp. The rst two digits are Resistors signicant gures of resistance 5 5 W type Radial Code Tol. B 250 V 2 A 134 C and the third one denotes T Insertion J 5 % C 250 V 2 A 145 C number of zeros following. Type K 10 % Decimal point is expressed Standard by R as 6.8=6R8 Resistance Tolerance 10 : J <10 : K Ratings Power Rating Current Rating Thermal Cut-off Resistance Range Standard Quantity Mass (Weight) Code (W) (A) (C) () (pcs.) g/pc. B 1.6 2 134 0.18 to 680 500 6.5 C 1.8 2 145 0.18 to 680 500 6.5 Power Derating Curve 120 For resistors operated in ambient tem per a tures above 25 C 100 25 C, power rating shall be derated in ac corda nce 80 with the gure on the right. 60 40 5TB 5TC 20 90 C 0 40 20 0 20 40 60 80 100 120 140 160 Ambient Temperature (C) Design and speci cations are each subject to change without notice. Ask factory for the current technical speci cations before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 01 Aug. 2012 Rated Load (%)Wirewound Resistor with Ther mal Cut-offs Dimensions in mm (not to scale) 131 91 f0.80.1 f0.60.1 +2 5 1 Fusing Characteristics ERU5TBK5R1 ERU5TBK6R8 1000 1000 (Thermal Cutoff) (Thermal Cutoff) 100 100 10 10 1 1 (Wirewound) (Wirewound) 1130 30 100 300 1000 113 0 30 100 300 1000 Applied Load (W) Applied Load (W) ERU5TBJ100 ERU5TBJ150 1000 1000 (Thermal Cutoff) (Thermal Cutoff) 100 100 10 10 1 1 (Wirewound) (Wirewound) 1130 30 100 300 1000 113 0 30 100 300 1000 Applied Load (W) Applied Load (W) Packaging Methods Please contact the factory for packaging meth ods. Safety Precautions The following are precautions for individual products. Please also refer to the common precautions for Fixed Resistors shown on this catalog. 1. When voltage exceeds the rated voltage and/or a current exceeds the rated current and are con tin u ous ly ap plied, the element of Wirewound Resistor with Thermal Cut offs (hereafter called the resistors) produces ex ces sive heat, which may not only deteriorate the built-in the Thermal Cutoffs but also blow it. 2. The resistors have a built-in the Thermal Cutoffs. Therefore, use and store them within their re spec tive op er at ing and storing temperature ranges as speci ed in individual delivery speci catio ns. 3. Carefully check the inductance effect of the resistors when using them in a high-frequency cir cuit. 4. If a transient load (heavy load in a short time) like a pulse is expected to be applied, check and eval u ate the operations of the resistors when installed in your products under the most adv erse conditions before use. Design and speci cations are each subject to change without notice. Ask factory for the current technical speci cations before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 01 Aug. 2012 Fusing Time (s) Fusing Time (s) 25.51.5 +2.0 1.04.5 Fusing Time (s) Fusing Time (s)