Halogen-Free PCB Circuit Boards

Halogen-Free PCB Topscom is a professional printed circuit boards manufacturer,include: Pcb Circuit Boards Manufacturing,Multilayer Rigid Pcb,High Frequency Pcb,Aluminum Pcb,Led Pcb,Thick Copper Pcb,High-TG Pcb,Halogen-Free Pcb,HDI Pcb,Flexible Pcb,Rigid-Flexible Pcb,pcb assembly,oem manufacturing,electronic contract manufacturing. Brief Introduction on Halogen-free PCB   With the increasing demand forenvironmentally friendly electronic products, halogen-free PCBs are becomingmore and more popular because they are constructed of materials that are freeof halogen. The dielectric constant, dissipation factor and moisturediffusivity of materials that are described as halogen-free are different fromthose employed in traditional printed circuit boards. Hence, if the productyou're engaged in requires to be environmental-friendly, Halogen-free PCBs willbe your ideal choices. Halogen-free PCB Manufacturing Service fromTopscom   As an ISO9001:2000 registered company,we're one of the most renowned PCB manufacturers in China making a concertedeffort to fabricate environmentally friendly custom PCBs that alleviateclients' concerns. Commonly used substrates for Halogen-free PCB are S1155(FR4) and S1165 (FR4), the following table lists some parameters of thosesubstrates:   Material  TG (DSC, °C)  Td (Wt, °C)    CTE-z (ppm°C)  Td260 (min)         Td288 (min)