Application of heat shrinkable sleeve on circuit board

The function of heat shrinkable sleeve is electrical insulation of connectors, anti-rust and anti-corrosion of solder joints, mechanical protection and wire harness protection, etc. It is widely used in electronics, communication, machinery and car production. Although the electrical appliances are not important components, they are often the key to the success or failure of the entire plan. The effect of heat shrinkable sleeves in circuits is to protect important components and circuits from being damaged and affected, and to achieve insulation, sealing, protection, and beautiful decoration. Today, the editor will introduce the application of heat shrinkable sleeve on the circuit board. Let's take a look:

Heat shrinkable sleeve refers to a woven mesh tube that adopts heat shrinkage. Heat shrinkable woven sleeve HSS is woven from polyester fiber and polyolefin monofilament, which can shrink to 0.5 times the original inner diameter after being heated. The circuit board that everyone knows is composed of many card slots, plug-ins, chips, etc. wrapped in wire harnesses. There are generally solder joints between the wire harness and the card slots, as well as branches and bifurcations. This requires the use of heat shrinkable sleeves to protect the solder joints. deal with.

The primary effects of heat shrinkable sleeves on the circuit board are as follows:

1. Sealing and rust prevention of solder joints; heat shrinkable sleeves can effectively reduce oxidation and corrosion of solder joints;

2. Insulation and short-circuit protection; heat shrinkable sleeve can effectively prevent the short circuit of the board caused by foreign objects overlapping;

3. Identifies the effect of the symbol; after the heat-shrinkable sleeve is processed by printing and the use of heat-shrinkable sleeves of different colors, it can be used for the purpose of the symbol without the wiring harness, which is convenient for identification and post-repair;

4. Extend the service life of the circuit board; circuit motherboards such as computer motherboards and large machine motherboards run at high temperatures, and the heat shrinkable sleeve can effectively reduce the aging speed of the wiring harness, protect the wiring harness from being eroded by dust, and extend the service life of the circuit board;

5. Protection at the branch of the wire harness; in the circuit board, a large wire harness will be divided into several small wire bundles at the interface and in the card slots that are overlapped respectively, the heat shrinkable sleeve can effectively maintain the bifurcation of the wire harness and fix the bifurcation. No longer spread due to external factors;

How to use heat shrinkable sleeves in circuit boards?

There are many heat shrinking methods for heat shrinkable sleeves. Among them, the editor recommends two methods for use in circuit motherboards. Because the specifications of heat shrinkable sleeves used in circuit motherboard wiring harnesses are relatively small, the simpler heating method is to use a lighter. , saves time and effort and saves costs, and then consider using a heat gun to heat and shrink the heat shrinkable sleeve. What are the applications of heat shrinkable sleeves on circuit motherboards in this article? A very detailed introduction has been made. Regarding the flame retardant grade of heat shrinkable sleeves or other issues of heat shrinkable sleeves, please read other articles in this column.

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