Circuit materials cater for PCBS for consumer to space designs
Materials for PCBs available from Isola Group range are formulated with characteristics that enable different circuit materials to be fabricated with compatible processes, even when they are used to form multi-layer, multiple-signal PCBs with a blend of analogue, digital and power circuitry.
Material choices include I-Tera MT40, I-Tera MT40 (RF/MW), Astra MT77, Tachyon 100G, TerraGreen, TerraGreen (RF/MW) and TerraGreen 400G.
The company’s circuit materials cover a broad spectrum of markets for PCBs in portable electronic devices and automotive safety systems to 5G base stations and small cells and satellite communications (satcom) systems.
The high-performance circuit materials feature key parameters, such as high glass transition temperature (Tg) and decomposition temperature (Td) to encourage compatibility of processing. The materials offer circuit designers and PCB fabricators a wide choice of circuit performance parameters, including permittivity (Dk) and dissipation factor or loss (Df), with behaviour that remains stable over wide operating temperature ranges, making them suitable choices for many growing electronic applications including advanced driver assistance systems (ADAS), 77GHz mmWave radar circuits, 5G wireless communications networks and smart energy systems, advised Isola.
I-Tera MT40, for example, is a good starting point for many high speed digital (HSD) circuits and RF/microwave PCBs. It is RoHS- and FR-4 process compatible. Its Dk is stable with frequency ranging from 3.45 to 10GHz over wide temperature ranges, making it the choice for reliable PCBs for HSD and microwave applications. For higher microwave frequencies, I-Tera MT-40 (RF/MW) offers Dk tailored to a user’s requirements.
When circuit loss is a concern, Isola’s Astra MT77 laminates (also available as prepregs without copper cladding) have a low Df of 0.0017. The FR-4 process- compatible materials are suitable for the mmWave portions of 5G networks and the 77GHz radar circuits in ADAS systems. For mmWave frequency coverage where low z-axis (thickness) co-efficient of thermal expansion (CTE) is required, Isola’s Tachyon 100G provides high stability over frequency and temperature through 100GHz analogue frequencies and 100Gbits per second digital rates. For designers and PCB producers in need of high performance, halogen-free circuit materials, Isola’s TerraGreen, TerraGreen (RF/MW), and TerraGreen 400G provide lead-free, RoHS-compliant materials for PCBs operating through high microwave frequencies and high-speed digital rates.
Visit Isola Group at electronica 2022 (15 to 18 November) at the company’s stand in Hall B1-422.
