Do you know how many aerospace circuit boards(1)
Aerospace is currently a hot topic. In the next 20 years, the number of aircraft may double, and tourists can slowly enter space. SpaceX will fly around the world in less than an hour.
This means that the number of circuit boards for these applications has begun to increase. Facing huge demands, designers must learn the specific rules for designing aviation and aerospace boards. PCB circuit board Manufacturers must be able to meet customer needs.
1. Reliability is the key
For the aerospace and aerospace fields, the main goal is to build reliable products. Aerospace customers or satellite customers expect their electronic products to last 15 to 20 years with zero failures. Therefore, the life and zero failure of electronic products are the key.
In order to improve the reliability of the circuit board, you need to start with PCB manufacturing and design. The first thing a designer needs to do is to design the circuit board reliably. Do not use cutting-edge technology. Use standard technology that we know is reliable and will not fail.
Any time 5,000 aircraft in the sky need to rely on zero-fault electronic equipment.
2. Use heavy copper
Most space applications use very heavy copper, which is much heavier than 2 ounces of copper. I see that many designs contain up to 5 ounces of copper. I saw some 20-layer products containing 20 layers of 4oz copper. How they manage heat in space is basically through dissipation. They use a very thick copper design, make a lot of heat dissipation vias, and use the chassis to dissipate heat. Because remember, the energy in the satellite is the key. You cannot use a fan cooling system, so you need to use the natural properties of copper itself as part of your heating and cooling strategy. But this is a challenge. As you know, it is not easy to build very heavy copper plates. In addition, it will use materials like polyimide, which is a more difficult to use resin system, so it brings its own challenges to meet the requirements.
3. Material: Polyimide
Polyimide may be a 95% application. It depends on the satellite. If it is a 15-20 year geostationary satellite, it will require polyimide. Some low-orbit satellites that may only be used within two to three years may use other materials.Companies like Rogers are starting to produce materials that are now attractive to customers who are working in space applications.
A large number of redundant devices are built into the aircraft to ensure that everything is normal in the event of a lightning strike. Usually, there are multiple systems, so you can switch to another system in the event of a failure. The way aerospace works is that they are not provided by the same supplier. If there is a defect, there is no risk of the same defect appearing on the backup system. There is a lot of redundancy inside the aircraft.