What is the role of potting compound in relays?

A relay is an electronic control device that has a control system and a controlled system. It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit.

When the solid-state relay is working normally, there is a certain amount of power loss on its internal chip. This power loss is mainly determined by the product of the output voltage drop of the solid-state relay and the load current, and is consumed in the form of heat.Therefore, the quality of heat dissipation directly affects the reliability of the solid-state relay.In order to solve the heat dissipation problem, potting materials are generally used at the bottom of the relay to conduct heat and seal, and to prevent corrosion from dust, moisture and other pollutants.