Name: PC board spacer, circuit board spacer, PC spacer, insulating sleeve.

Main function: tighten, insulate, keep the height of the circuit board consistent.

When there are multiple circuit boards inside the electrical appliance, the multiple circuit boards need to be separated and insulated from each other while maintaining a certain distance for the components to connect. Sometimes it is necessary to take into account the requirements of beauty and heat dissipation. Due to the particularity of electrical products, there are usually higher requirements for fire protection and environmental protection.

Common classification

According to the circuit board fastening method, it is divided into

1. Double-head isolation column: The circuit board has a hole on the top and bottom, and the two ends of the isolation column are inserted into this hole respectively, and the circuit board is fastened by the shape of the airplane head.

2. Round-bottomed isolation column: one end has a larger hole and one end is smaller. The isolation column is inserted through the large hole during installation, and the bottom is tightly locked on the base plate due to the larger diameter; the other end is buckled by the airplane nose Tighten the PC board.

3. Flat-bottomed isolation column: The substrate does not have holes. The bottom of the isolation column is usually a hexagonal head or threaded hole, which can be directly installed on the fixing groove on the substrate, and the other end is fastened to the PC board with an airplane head.

4. Gecko isolation column: Because the head shape is sharper and resembles a gecko, the base plate is screwed with a threaded hole (usually 3MM), and the other end is fastened with a plane head to fasten the PC board.

5. Card-type isolation column: The shape of the two ends is almost symmetrical, and the openings of the PC board and the substrate are consistent, and the PC board and the substrate are fastened respectively.

In actual applications, according to the usage of the circuit board, there are also multi-layer isolation columns and special-shaped isolation columns, which generally need to be customized according to the requirements of engineers. The isolation column products are mostly made of precision plastic molds.