Metal Film Resistors, Low Resistance Value Metal Film Resistors Type: ERXL (Low Resistance Value) (0.5 W, 1 W, 2 W) Features ● Miniaturized ● Non-flammable ● Automatic ● RoHS Insertion compliant Explanation of Part Numbers 1 2 3 E R X Product Code ERX Metal Film Resistors 4 5 6 7 2 L J Special Feature Power Rating 12 0.5 W 1 1W 2 2W L Small size Low resistance value Resistance Tolerance J ±5 % 8 9 10 11 4 7 M Resistance Value The first two digits are significant figures of resistance and it shows by the unit of the "mΩ". Decimal point is expressed by M as 47 mΩ = 47M. Code □···□ □···V □···P □···E W···E 12 Forming & Taping matrix 12L 1L 2L Straight lead wire type ○ ○ ○ Axial paping type (Straight lead) ○ ○ ○ Cut & Forming type ○ ○ ○ Radial Taping type (E type) ○ ○ ○ Radial Taping type (WE type) ○ ○ ○ Forming / Packaging The above example shows a small size and low resistance value metal film resistor, 2 W power rating, resistance value of 47 m ohms, tolerance ±5 %, and package of standard bulk packing. Construction Dimensions in mm (not to scale) High reliable metal plating film Lead wire k k L fD fd Ceramic core (High thermal conductivity) Spiralling turns Marking Dimensions (mm) Part No. 0D L ERX12L 6.35 –0.35 ERX1L 9.00 –1.00 ERX2L 12.00 –1.00 0d k +0.65 2.3 –0.3 +0.5 30.0 +1.50 2.8 ±0.5 30.0 4.0 ±1.0 30.0 Mass (Weight) [g/pc.] ±3.0 0.65 ±0.05 0.26 ±3.0 0.65 ±0.05 0.33 ±3.0 0.80 ±0.05 0.66 Flame and solvent retardant End cap +1.50 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. 02 Sep. 2014 Metal Film Resistors, Low Resistance Value Ratings Part No. Power Rating at 70 °C (W) (1) Dielectric Withstanding Voltage (VAC) Res. Tol. (2) (%) Resistance (2) Range (Ω) min. max. ERX12L 0.5 350 J (±5) 22 m 82 m ERX1L 1 350 J (±5) 22 m 82 m ERX2L 2 600 J (±5) 22 m 82 m Standard Resistance Value T.C.R. –6 (×10 /°C) E12 22 to 39 mΩ=±1000 47 to 82 mΩ=± 500 E12 E12 (1) Rated Continuous Working Voltage (RCWV) shall be determined from RCWV=√Power Rating×Resistance Value. (2) Resistance tolerance and resistance range is of use besides range listed, please inquire. 120 –55 °C Rated Load (%) Power Derating Curve For resistors operated in ambient temperatures above 70 °C, power rating shall be derated in accordance with the figure on the right. 70 °C 100 80 ERX1L, 2L 60 ERX12L 40 20 130 °C 0 –60 –40 –20 0 235 °C 20 40 60 80 100 120 140 160 180 200 220 240 Ambient Temperature (°C) ■ As for Packaging Methods and / or cut formed leads, Please see Metal (Oxide) Film Resistors Packaging Methods Safety Precautions The following are precautions for individual products. Please also refer to the common precautions for Fixed Resistors in this catalog. 1. Transient voltage If there is a possibility that the transient phenomenon (significantly high voltage applied in a short time) may occur or that a high voltage pulse may be applied, make sure to evaluate and check the characteristics of Metal Film Resistors (hereafter called the resistors) mounted on your product rather than only depending on the calculated power limit or steady-state conditions to complete the design or decide to use the resistors. 2. The resistors are covered with a special coating. Do not apply shock or vibration to them, or pinch them with long-nose pliers. Otherwise, the resistors may be damaged. 3. Do not apply excessive tension to the lead-connected sections. When bending the lead wire, do not apply excessive stress to the resistors and provide the wire with a natural curvature. 4. Do not brush the resistors during or after the cleaning process, which may be conducted after soldering. Otherwise, the coating film may be damaged. 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. 02 Sep. 2014