Industrial Electronics

Isola shows halogen-free PCBs at DesignCon 2023

27 January 2023

Isola Group, a developer of advanced circuit materials for printed circuit boards (PCBs), is inviting exhibition visitors to learn more about halogen-free PCBs at DesignCon 2023. Visitors to Isola’s exhibition Booth 627 can discover how unmatched levels of electrical performance are possible with a new trio of halogen-free circuit materials. DesignCon 2023, scheduled for January 31 through February 2, 2023, in the Santa Clara, California, Convention Center, is the major conference and exhibition for high-speed communications and systems design and development.

Isola Group will be unveiling its latest TerraGreen low-loss circuit materials: TerraGreen 400G, TerraGreen 400GE, and TerraGreen 400G2. The circuit materials incorporate advances to Isola’s existing TerraGreen standard halogen-free circuit materials and TerraGreen radio frequency/microwave (RF/MW) halogen-free circuit materials for RF and MW circuit applications. The new TerraGreen circuit materials are based on selected glass fibers and ultra-smooth copper materials to form ultra-low-loss circuit materials ideal for high-speed-digital (HSD) and high-frequency analog circuits typically used to interconnect wired and wireless communications equipment and networks.

Source: IsolaSource: Isola

Because they are RoHS-compliant for use with lead-free circuit manufacturing processes and compatible with FR-4 circuit material manufacturing processes, they are well suited for producing cost-effective hybrid, mixed-signal circuits. The three new TerraGreen materials all feature glass transition temperature (Tg) of 200° C and decomposition temperature (Td) of 380° C.

Isola Group’s chief sales and marketing officer, Sean Mirshafiei, explained: “We are very excited to offer the PCB industry our three new products that were created with a unique halogen-free resin system that has outstanding CAF and bond line resistance.” He added: “TerraGreen 400G2 is our most advanced HSD product. We use ultra-smooth copper foil and ultra-low Dk glass fabric that are combined with this novel resin system for optimal performance for the next generation of high-end network and communication systems.”

The three new TerraGreen circuit materials deliver outstanding stability with temperature and frequency, maintaining constant permittivity (Dk) and loss tangent (Df) at temperatures from -55° C to 125° C. They are capable of even less loss than the company’s popular Tachyon100G circuit materials at 28 GHz. For example, TerraGreen 400G exhibits typical Dk of 3.1 at 5 GHz, 10 GHz and 20 GHz with typical loss tangent of 0.0018 at the same three evaluation frequencies. TerraGreen 400GE halogen-free circuit laminates offer higher Dk of 3.4 at 10 GHz and 20 GHz with slightly greater loss, with typical Df of 0.0026 at 10 GHz and 20 GHz. The lowest-loss material of the halogen-free trio, TerraGreen 400G2, features typical Dk of 3.1 at 5 GHz, 10 GHz and 20 GHz with typical Df of 0.0015 at the same three frequencies.

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