PCB Technical - PCB aluminum substrate and three anti-glue

The aluminum substrate is a metal copper clad laminate with good heat dissipation performance. Generally, the single board has a three-layer structure, which is a circuit layer (copper foil), an insulating layer, and a metal base layer. Printed PCB, also known as printed circuit board, is a device that provides electrical connections for electronic components.

Circuit boards belong to a broad category, and aluminum substrates are just one of them, and are designed in accordance with the requirements of PCB boards. Usually the aluminum substrate we call is a single-sided PCB with aluminum as the substrate, which has good thermal conductivity and is generally used in the LED industry. The most commonly used LED aluminum substrates have front and back sides. The white side is for soldering the LED pins, and the other side is the aluminum substrate. The thermal conductive gel is usually applied after contacting the heat conducting part.

Usually, the PCB board we are talking about refers to the copper base. According to different layers, it can be divided into single layer and multiple layers. Compared with aluminum substrates, copper substrates and aluminum substrates. Due to the particularity of its polypropylene material, the aluminum substrate has better heat dissipation than the PCB board, and the price is relatively expensive.

What is the three-proof glue for PCB board and what is its main function

The so-called PCB refers to a printed circuit board, also known as a printed PCB, which refers to equipment that provides electrical connections for electronic components. This kind of three-proof glue is very common in the electronics industry, and its application is also very wide. And there is no such adhesive as the three-proof glue for PCB board, but the three-proof glue is actually applied on the PCB.

Factors that easily cause damage to the PCB board.

Moisture is the most common and most damaging factor affecting the performance of PCB boards. Excessive moisture will greatly reduce the insulation resistance of the conductor, accelerate the decomposition rate, reduce the Q value, and corrode the conductor. Green copper often appears in the metal part of the PCB, which is caused by the chemical reaction of copper metal with water vapor and oxygen.

Why do I need to coat the three-proof glue on the PCB board?

Due to the use of three-propcbof glue PCB board, it not only has the "three-proof" performance of waterproof, moisture-proof and dust-proof, but also has anti-cold and heat shock, anti-aging, anti-radiation, anti-salt spray, anti-ozone corrosion, anti-vibration, and good The flexibility and good adhesion.

Coating three-proof glue on PCB boards and parts can reduce or eliminate the decline of electronic operation performance due to adverse operating environment impacts.

Due to the different application environments of the three-proof glue, different end products will focus on the performance requirements of the three-proof glue. Household appliances such as refrigerators, washing machines, and water heaters require moisture resistance, while outdoor fans and street lights require products with excellent anti-fog performance.

As the "protective god" of PCB circuit boards, the three anti-glues are evident in their professional standards. To purchase this kind of professional and demand-oriented adhesive products, it is natural to choose a professional and regular brand, and use it more at ease. For example, Cosmos, which specializes in R&D and production of three-proof adhesives, can provide customized solutions according to different needs. .

Electronics is very afraid of being destroyed, if you need to use electronics in harsh environments. It is strongly recommended to use the three-proof glue on the PCB circuit board, so that a good protective coating can be formed. It has the functions of moisture-proof, anti-corrosion, anti-vibration and protection.