I. PC board isolation column is also called PC isolation column, circuit board spacing column, PC spacing column, airplane frame, airplane type isolation column, insulating sleeve, because it plays the function of insulation, so it is also called insulating isolation column.

II. The main role: fastening, insulation, to maintain the height of the circuit board consistent.

When there are multiple circuit boards inside the appliance, it is necessary to separate the circuit boards and insulate them from each other, while maintaining a certain distance for the components to be connected. Sometimes also need to take into account the aesthetic, heat dissipation and other requirements, because of the special nature of electrical products, usually on the fire rating and environmental protection level and higher requirements.

Material: UL qualified NYLON 66 (natural color), fire rating 94V-2. 

Use: For fixing PC board. 

Use: Tool-free, easy to load and unload by hand. When using, first drill a hole in the substrate and then fix the isolation post, and then put the PC board into it.

Features: Double-locking type, strong fixing force, inserting effort-saving, not easy to fall off.

III. Common classification

According to the circuit board fastening method, divided into

1. Double-headed isolation column: the top and bottom of the circuit board are open a hole, the two ends of the isolation column are inserted into this hole, with the shape of the aircraft head fastened circuit board.

Double-headed isolation column [1] 2. round bottom isolation column: one end open a larger hole, one end smaller, the installation of the whole isolation column from the large hole through the bottom because of the larger diameter can not pass and locked on the substrate; the other end to the aircraft head fastening PC board.

One end of the round bottom isolation column is fastened to the base plate, and one end is inserted into the PC board. [2]3. Flat bottom isolation column: the substrate is not open, the bottom of the isolation column is usually a hexagonal head or threaded hole, can be directly installed in the fixed slot on the substrate, the other end to fasten the PC board with a plane head.

Flat bottom isolation column is also known as hexagonal isolation column [3] 4.

Shaped like a gecko [4] 5. Card-type isolation column: the second end of the shape is almost symmetrical, PC board and substrate openings to maintain the same, respectively, fastened PC board and substrate.

Almost symmetrical structure, the two ends take the same way of fixing [5] In practice, according to the use of circuit boards, there are multi-compartment isolation column and shaped isolation column, generally need to be customized according to the requirements of engineers, isolation column products are mostly injection molded using precision plastic molds.