Derating factors of Resistors & Capacitors
Introduction Derating is a process to identify the capacity of the component over its life time. For Ex: If a product is using a Resistor , Derating process will identify what will be the tolerance variation of the resistor due to stress over the life of the Product. Stress on electrical components comes from various types, for example Electrical stress, Thermal stress etc. We need to choose a component which is robust to such stress and meet the life time requirement of the product. Resistor: In General below is the tolerance factor associated with different stresses for the component Resistor. 1) Temperature (2%) 2) Humidity (1%) 3) Solder Tolerance (1%) This is in addition to the component tolerance which is around 5 -10 %. When selecting a Resistor we need to consider combined tolerance of the component, is acceptable for the intended design or not. Same applicable for other components as well. Capacitor: Supplier create...