4 Causes of Thick Film Resistor Failure
Rarely Thick Film resistor failure is caused by the failure of resistive unit. Usually, it is caused by the external environmental reasons like electrical and mechanical stresses, and due to mishandling of the equipment.
Let us have a run-down through these common causes of the Thick Film Resistor Failure.
Electrical or Thermal Stress
Most of the thick film resistor failures are caused due to the excessive propagation of the heat. Henceforth, it becomes very important to understand the amount of heat dissipated by the resistor and the substrate material. You will need to buy resistor kit to properly understand the properties of power resistor.
Constant Overload
An overloading condition of a resistor device will cause the degradation of the resistance power of the insulation. Also, this will cause the resistor parameters to change over a period. It becomes very important to understand and observe the maximum specified voltage of the resistor.
Surge
The key factor in determining the surge resistance of a thick film resistor is the mass that of a resistor element. The mass of the resistor element is directly proportional to that of the thickness further multiplied to its surface area.
Secondly, the contributing factor of the surge capability of the resistor kit is to trim the final resistance value. The techniques used for trimming the resistor value can cause the creation of weak spots resulting in the failure under surge conditions.
Mechanical Stress
Apart from all the above factors, the most important factor that causes the Thick Film Resistor failure is either due to the excessive vibration caused in the device or inappropriate mounting of the device.
This can lead to the alteration in the resistance value or may cause damage to the resistive unit and component failure.
A resistor may be the low-cost element in any system, but the resistor can be fatal when it fails. It is therefore important to understand the potential risks. You can also visit Analog Technologies, the specialist manufacturer who has long term experience and its manufacture can minimize the risks of the resistor failure.
