Conformal coating on a PCB (Printed Circuit Board) is a protective layer applied to the surface of the board to shield it from environmental factors such as moisture, dust, chemicals, and temperature variations. This thin, transparent layer conforms to the shape of the PCB and its components, offering insulation and enhancing the durability of the board. It helps prevent short circuits, corrosion, and damage to sensitive electronic parts, making it essential for PCBs used in harsh environments or critical applications like automotive, medical devices, and aerospace.

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