Wirewound Resistors, Flameproof, Bath-tub Type Wirewound Resistors, Flameproof, Bath-tub Type (High Power with Aluminum Case Type) Type: ERF□□□W ERF60W, ERF100W, ERF150W, ERF200W Discontinued ■ Features ● Flameproof .................. Made from nonflammable materials, making the resistor very safe. ● Exclusive Pulse ............ Suited for regeneration resistance, due to a structure and materials equipped for pulse characteristics. ● Uniform Quality ............ An exclusive automated process with a meticulous quality-control system, combining fine selections of resistance wires and associated qualified materials resulting in uniform quality and consistent reliability. ● RoHS compliant ■ Explanation of Part Numbers 1 2 3 4 5 6 7 8 9 10 11 & 3 ' 8 + Product Code Style Code Style Aluminum case receipt type W Power Rating Code Rated power 60 60 W 100 100 W 150 150 W 200 200 W Fixed Wire wound Resistor Bath-tub Resistance Tolerance Code Tolerance J ±5 % K ±10 % 12 Suffix for Special Features When performing lead processing and special condition specification, the classification is denoted in the Roman alphabet using one character. Resistance Value The first two digits are significant figures of resistance and the third one denotes number of zeros following. Decimal point is expressed by R as 4.7 = 4R7 ■ Construction Alnminum case End cap Marking Electric wire 5 Cement ■ Dimensions in mm (not to scale) Ceramic plate with holes Resistance wire 1 F Ceramic plate W 1 H Ceramic case 60W : 120±10 More than 100 W : 200±10 L2 P L1 Fiber-Glass core 18 ■ Ratings ✽1 Type Power Rating at 25 °C (W) Resistance Range (Ω) min. max. Dielectric Withstanding Voltage (VAC) Standard Quantity (pcs.) ERF60W Type Dimensions (mm) L1 P F Standard Mass (Weight) (g/pc.) L2 W H 100 75 30 13 90 67 58 152 120 44 13 140 112 126 ERF60W 60 1.2 450 2000 50 ERF100W ERF100W 100 8.2 910 2000 50 ERF150W 182 150 44 13 170 134 152 ERF150W 150 11.0 1.2 k 2000 50 ERF200W 230 200 44 13 220 184 183 ERF200W 200 15.0 1.6 k 2000 50 ✽1 ; Classis Mounted (300×300×2t Al plate) ■ Packaging Methods Please contact the factory for packaging methods Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 01 Aug. 2012 65 Wirewound Resistors, Flameproof, Bath-tub Type Safety Precautions Discontinued The following are precautions for individual products. Please also refer to the common precautions for Fixed Resistors shown on this catalog. 1. Since Wirewound Resistors (hereafter called the resistors) generate heat during use, mount them on your product and carefully check the effect of heat on other components. Provide for adequate safety when designing your product. Otherwise, when a short circuit or other abnormality occurs, or when a voltage or current exceeding the rating is applied, the resistors may overheat without breaking, or may generate smoke or red-heat, breaking the ceramic case and thus exposing the red-heating resistor element. 2. Carefully check the inductance effect of the resistors when using them in a high-frequency circuit. 3. If a transient load (heavy load in a short time) like a pulse is expected to be applied, check and evaluate the operations of the resistors when installed in your products under the most adverse conditions before use. Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. 01 Aug. 2012 66