Thermal PAD application in PCB board of industrial router

     Industrial router can support high-speed connection of equipment and can be used in harsh and complex working environment. And directly connect industrial machinery and equipment for real-time massive data transmission, so that managers can easily grasp the situation of production and operation at different times and regions.

    Industrial routers are widely used in the industrial chain of the Internet of things, such as telemedicine, emergency rescue, high-definition cameras, inspection robots, smart grid, intelligent transportation, smart home, supply chain automation, industrial automation, digital medicine, etc.

    Therefore, in order to solve the problem of heat dissipation and stability of routers, engineers usually use soft thermal conductive silicon material combined with heat sink to dissipate heat in the thermal design of routers. For example, WiFi chips, SOC, DDR, exchange chips, etc. have a large calorific value. The heat is first transferred to the metal shield through the thermal PAD or grease, which plays the role of anti-interference and heat dissipation, and then the heat on the metal shield is transferred to the heat dissipation plate through the thermal conductivePAD for heat exchange and heat dissipation with the outside air.

   There are many capacitors, inductors, chips and other electronic devices need to be welded on the front of the router PCB  board, so the back of the PCB board will be uneven. At this time, the selection of the hardness of the heat sink is particularly important. If the hardness is too hard, the thermal PAD and the PCB board will not fit well, and the thermal conductivity effect will be greatly reduced.