source:Other information release time:2023-08-23 Hits: Popular:PCB Assembly company
At present, PCB circuit board products on the market are mainly divided into three types based on the material category: ordinary substrate, metal substrate, and ceramic substrate. Below, let Shenzhen circuit board manufacturers share with you: What are the classifications and advantages of PCB metal substrates?
1、 Classification of metal substrates:
There are three main types of metal substrates: aluminum substrate, copper substrate, and iron substrate. The focus of this analysis is on aluminum substrate and copper substrate.
Aluminum substrate is currently the most commonly used substrate among metal substrates, with good thermal conductivity, electrical insulation performance, and mechanical processing performance. Aluminum substrates are divided into flexible aluminum substrates, hybrid aluminum substrates, multi-layer aluminum substrates, through-hole aluminum substrates, etc.
Copper substrate is the most expensive type of metal substrate, and its thermal conductivity is many times better than that of aluminum substrate and iron substrate. Copper substrates are divided into gold plated copper substrates, silver plated copper substrates, tin sprayed copper substrates, and antioxidant copper substrates.
2、 Advantages of metal substrates:
1. Thermal expansibility
The metal substrate can effectively solve the heat dissipation problem, thereby alleviating the thermal expansion and contraction problems of different substances in the components on the circuit board, and improving the durability and reliability of electronic equipment.
2. Heat dissipation
At present, many double-sided and multi-layer boards have high density and high power, making it difficult to dissipate heat; And metal based printed boards can solve this heat dissipation problem.
3. Dimensional stability
The size of the metal substrate is much more stable than that of the insulating material sheet.
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