The types and specifications given in this catalogue are general in nature and apply largely to our standard types and hence if the resistors are to be used in special applications or are to be used in areas that need extremely high reliability such as life maintenance equipment, atomic energy, aircrafts and manned satellites it would advisable that samples are procured from HTR and evaluated for suitability in real life conditions/simulation. During soldering operations, care should be taken to keep

HIA / HTA / HAA / FRS / HFW series Core Mullite / Ceramic (thermally efficient) End Caps Tin Plated Steel Wire Terminations Tin Plated Copper or Copper Clad Steel depending on application Resistive Element Wire CuNi 44 / NiCr 8020 / NiCr 20 AlSi depending on resistance value. Coating High temperature Silicone with inert fillers, flame retardant. VHIA Series Core Mullite / Ceramic (thermally efficient) End Caps Stainless Steel AlSi 304 Wire Terminations Tin Plated Copper Clad Steel Resistive

Type Internal HTR reference for a certain component, to be used along with series for ordering. Series Collection of types with identical constructional features and technical data. Physical Configuration Physical style / appearance and dimensions of the component. Power Rating Electrical power, defined by current and voltage, a resistor can bear continuously at a given ambient temperature – Normally at 25°C, 40°C or 70°C. Resistance Tolerance The allowable deviation from nominal resistance value at the moment the component is received.