Among the copper-clad laminates in which fiberglass is used as reinforcing material, CR4 CCL is most heat resistant which is modified and brominated with epoxy resins. With the up-gradation in the copper-clad laminates industry, paper-based reinforcing material is got replaced with fiberglass, and CR4 fiberglass copper clad laminates are the most widely used CCL's. They are CCL's with excellent dielectric properties, high strength, and heat resistance. They also provide substrate holes that can be filled with metal and provide circuit conductivity in double-layer, multi-layer, rigid, and flexible copper clad laminates.
What makes CR4 most widely used CCL and types of CR4 CCL
The properties of CR4 CCL which makes it the most widely used CCL are
• They are highly flame and heat resistance
• They can be used in the manufacturing of PCB
• They have very good electric insulative properties and have plentiful resources.
Till now different product based on FR4 material have been introduced in the market which includes Common FR4, Mid-Tg FR-4, High-Tg FR-4, Lead-free soldering FR-4, Halogen-free FR-4, Mid-Tg (Tg150°C) halogen-free FR-4, High-Tg (Tg170°C) halogen-free FR-4 and FR-4 CCL with high performance. Visit here if you are looking for more information about Copper Clad Sheet for PCB.
With the evolution in the industry of electronics, new trends of copper-clad laminates are being introduced in the market which are more heat resistant and reliable as compared to the old ones. Copper clad laminates are the main component used in the manufacturing of printed circuit boards. Here are some new trends of copper-clad laminates and their comparison with CR4 CCL's.
The new types of CCL's are Halogen-free CCL and lead-free CCL.
Halogen-Free copper-clad laminates: In this type of CCL bromine and chlorine content is up to 900 ppm while their total content value not exceeds more than 1500ppm. Here is a comparison between Halogen free CCL’s and FR4 CCL’s
• In terms of heat resistant, halogen-free CCL's are considered best as compared to FR4.
• In terms of flammability, they both are the same
• In terms of peel strength, FR4 are more good
• In terms of size, halogen-free are excellent
• The thermal decomposition temperature for halogen-free is above 3200c while for CR4 it is 3100c.
Lead-free CCL: This type of copper-clad laminate has their surface mounted with lead-free solder. These types of laminates are free from brominated epoxy resins. In terms of safety, these laminates are considered as best but not used widely due to low performance and reliability as compared to FR4.
DK enterprise is a very familiar name in copper clad laminates industry. They are very reliable and well know dealer of copper clad laminates in Ahmedabad, India. Contact dkenterprise.ind.in/aluminum-copper-clad-laminate.html to order you CCL or to get more information about CCL products.
