The demand for environmentally friendly electronic products has increased significantly. Halogen-free Printed Circuit Boards (PCBs) are becoming more popular because they are made of materials that are free of halogen. The dissipation factor, dielectric constant, and moisture diffusivity of halogen-free materials differ from those used in outdated PCBs. Therefore, if your product requires environmental-friendliness, Halogen-free PCBs are the ideal choice.
At Techonics, we are a renowned PCB manufacturer in China, committed to producing custom PCBs that are environmentally friendly and meet our clients’ expectations. Commonly used substrates for Halogen-free PCBs include FR4 and FR4. The table below lists some parameters of these substrates: S1155, S1165.
| Material | TG (DSC, °C) |
Td (Wt, °C) |
CTE-z (ppm/°C) |
Td260 (min) |
Td288 (min) |
| S1155(FR4) | 140 | 380 | 41 | 60 | 60 |
| S1165(FR4) | 170 | 360 | 40 | 60 | 15 |