40 series

      Ohmite 40 Series resistors are the most economical conformal silicone-ceramic coated resistors offered. These all-welded units are characterized by their low temperature coefficients and resistance to thermal shock, making them ideal for a wide range of electrical and electronic applications. 40 Series with 1% and 5% tolerances are identical in construction and electrical specifications. Durable but economical 40 Series resistors exceed industry requirements for quality.
     There are five unique features about 40 Series. The first one is that it is economical. The second one is its applications include commercial, industrial and communications equipment. The third one is that its stability under high temperature conditions. The forth one is all-welded construction. The fifth one is RoHS compliant, add "E" suffix to part number to specify. Its material: Material of coating is conformal siliconeceramic. Material of core is ceramic. Material of terminals of 40 Series is solder-coated copper clad axial. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu
Derating is Linearly from 100% @ +25°C to 0% @ +275°C. Electrical Tolerance of the 40 Series is ±5% (J type), ±1%(F type) (other tolerances available). Power rating is based on 25°C free air rating (other wattages available). Overload is under 5 watts:5 times rated wattage for 5 seconds. 5 watts and over:10 times rated wattage for 5 seconds. Temperature coefficient is under 1(±90 ppm/°C ), 1 to 9.99(±50 ppm/°C), and 10 and over(±20 ppm/°C).
      Thanks for your attention and if you want to know about 40 Series or you are interested in this kind of products , please go to our web and we will provide detailed information there!