The world of electronics and communications is changing so rapidly that technologies and devices are made possible, which was unthinkable even a year ago. The main contributor to such leaps and bounds growth of these technologies is the advancement of PCBs.
Printed circuit boards have enabled manufacturers to develop versatile devices. However, more and more manufacturers now look for PCBs with better heat dissipation and enhanced electrical conductivity.
The copper base PCB has thus emerged and dominated the printed circuit board market much. This copper PCB has the ability todelicate patterns and complex connections. Its uses are seen mostly in high-frequency circuit board manufacturing.
What is Copper Base PCB?
There’re mainly three types of metal PCBs. These PCBs are-
- Aluminum PCB
- Copper-based PCB
- Iron-Based PCB
Copper base PCBs are the most demanding and expensive of all the three types of printed circuit boards. It got the name because the circuit board substrate is made of copper. The use of copper makes these circuit boards highly thermally conductive and versatile.
Its less thermal resistance makes it high-demanding in projects where you need significant current carrying capacity. The copper foil used as the substrate typically has a thickness of around 35μm~280μm. Its thermal conductivity is further assured with the use of aluminum oxide and silicon powder. The manufacturer also usesepoxy resin to connect the substrate and the leading copper circuit. The epoxy resins are often filled with polymer for the secured connections.
Copper Base PCB Classification
The copper-based PCBs are classified depending on their substrate and manufacturing design. In general, you will see four kinds of copper printed circuit boards. These types are-
- Immersion gold copper-based PCB
- Silver plating copper-based PCB
- Anti-oxidation copper-based PCB
- Hot air soldering leveling (HASL) copper-based PCB
As you see, the manufacturer uses various metals to work with the copper printed circuit boards. The gold immersion plus copper PCBs are the most expensive ones and are used in high-demanding jobs. You will see their applications in the medical and military industry mostly.
HASL copper PCBs are special ones thatare soldered using hot air. It reduces any impurity of the copper and makes the copper base PCBs flawless.
Advantages and Use of Copper-Based PCBs
Copper-based printed circuit boards, as we previously mentioned, are the most demanding among all metal PCBs. But what are the benefits of the copper PCBs that make them so important and expensive?
Firstly, copper has one of the best thermal conductivity among the easily found metals. Thus, it dissipates the heat across the circuit board evenly. It is essential where the circuit board may quickly get heated due to challenging applications. Also, it has high-frequency and the ability to cope up with the changing heat of the device.
Furthermore, copper will withstand better against thermal aging and stress. It means the device made using this printed circuit board will be more durable and reliable in challenging conditions. Another benefit of these PCBs is theirviscoplastic property. Therefore, it will have the least deformity enhancing the device longevity.
Also, copper is readily available, and so you won’t have to find it challenging to get the copper in bulk to manufacture these circuit boards. But the benefits don’t end here. Copper has excellent stress-resistance and expansion capacity. You will only require 1.4 thousand 1-inch thick copper to manufacturer an entire 1-foot of the copper substrate. Thus, it brings down the production cost to a minimal level.
Thus, in short, the main advantages of copper-based PCBs are-
- Outstanding thermal conductivity with only 0.15 resistance
- Withstands thermal and mechanical aging and stress
- Excellent viscoplastic property
- Great expandability
- Less expensive and easy availability
The benefits of using copper printed circuit boards have made them the most popular and reliable metal PCBs in the market. Henceforth, you will see its uses in various industries.
The most common applications of copper-based PCBs are-
- Architectural industry
- Communication equipment
- Medical devices
- Aviation industry
- Military equipment
The use of copper PCB is on the prowl nowadays. You can hardly find any communication and electronic device where these printed circuit boards aren’t used.
SFX PCB Manufacturers the Best Copper Base PCBs
SFX PCB is ready to manufacture and supply you with the most dependable and durable copper-based printed circuit boards. We have both mass production and prototype manufacturing facility to meet your customized needs.
Also, we have excellent packages to offer you for bulk purchases and repeat orders. Therefore, you can tailor your order to meet your budget and requirements.
Our PCBs made of the copper base has the following key benefits-
|Ordering criteria||Single-side prototype: 9 days
Double-side prototype: 16 days
Mass production (Single-side):10-12 days
Mass Production(Dual-side):18-20 days
SFX Thermo-electrical Separation Copper Base PCB Manufacturing Flow
Thermoelectric copper-based PCB has high density. So, it has an incredible thermal and electrical load-carrying capacity. It extends the lifespan of the lamp bead lights. It has great demand thanks to its versatility
We have a definite process flow for this-
- Firstly, we cut the copper substrate into a suitable size for working over it.
- After that, we apply micro-etching and brushing techniques to roughen the board. It helps the base to become rugged and durable.
- After that, we attach the photoresist base with the base film. The attachment is made under proper temperature and pressure. Ultraviolet light is used to eliminate flaws, and then the polymerization is applied over the film.
- Using an aqueous solution, we remove the dark or unexposed area on the film to develop the final printed circuit board.
- Finally, we clean and check the photo-resistant dry film for the copper base printed circuit boards.
Copper base PCBs are high-demanding. These circuit boards are versatile and easily customizable for catering to different devices. When you want to get these printed circuit boards in bulk amount, you can contact SFX PCB.
You rest assured to get the best PCBs for copper base ones here. These boards are customizable with different thicknesses for your necessities.