Knowledge corner｜ Why can't I touch the circuit board with my hands

The act of touching the circuit board can cause damage to the board and our own safety. Here are a few reasons why hands should not touch the circuit board directly:

1. Electrostatic discharge: Our bodies often carry electrostatic charges, and when we touch the circuit board, these charges may be released to the circuit board through the touch point. This can damage circuit elements or cause circuit failure. Especially for sensitive integrated circuits, weak electrostatic discharge is enough to cause permanent damage.

2. Grease and dirt: Our hands are often covered with grease and other dirt. When we touch the board, these oils and dirt may remain on the board, resulting in poor contact or triggering a short circuit. This accumulation of dirt can degrade the performance of the board and even cause failure.

3. Physical damage: The components on the circuit board are usually very small and fragile. When touching the circuit board directly with your hands, it is easy to apply too much force and cause damage. Poor contact or bending of wires and pins can also cause board problems.

To avoid these problems, we need to follow some precautions to protect the board and our own safety. When manipulating the circuit board, i wll recommends the following measures:

1. Esd prevention: Use ESD gloves or clothes, or release the electrostatic charge on the body through the grounding cable before touching the circuit board.

2. Cleaning and maintenance: Keep your hands clean and avoid using chemicals that contain grease or other dirt before touching the circuit board. Clean and maintain the circuit board regularly to ensure its proper operation.

3. Accurate operation: Use tools when necessary, rather than touching the board directly by hand, to reduce the risk of physical damage to the board components.

By following these measures, we are able to protect the integrity of the board and reduce the risk of failure, while ensuring our own safety. Keep in mind that electronic components need to be properly handled and maintained in order to maintain their normal functioning and longevity.