Definition

I-Tera MT40 is Isola's primary low-loss material for high-speed digital applications. Key specs: Dk 3.45 at 10 GHz (stable from -55°C to +125°C), Df 0.0031 (consistent across 2-10 GHz), Tg 215°C, and Td 360°C. Both T260 and T288 exceed 60 minutes, making it robust for lead-free assembly. I-Tera MT40 works with HVLP copper foils and requires no special through-hole processing unlike PTFE. It competes directly with Megtron 6 for 25-56 Gbps designs. Choose I-Tera MT40 when you need stable Dk across temperature extremes or when your fabricator stocks Isola rather than Panasonic materials.