High Performance Laminate and Prepreg IS420 is a high performance 170°C glass transition temperature (Tg) FR-4 system for multilayer Printed Wiring Board (PWB) applications where maximum thermal performance and reliability are required. IS420 laminate and prepreg products are manufactured with a unique high performance multifunctional epoxy resin, reinforced with electrical grade (E-glass) glass fabric. This system provides improved thermal performance and low expansion rates in comparison to traditional FR-4 while retaining FR-4 processability. In addition to this superior thermal performance, the mechanical, chemical and moisture resistance properties all equal or exceed the performance of traditional FR-4 materials. The IS420 system is also laser fluorescing and UV blocking for maximum compatibility with Automated Optical Inspection (AOI) systems, optical positioning systems and photoimagable solder mask imaging. Product Features · Industry Recognition - UL File Number: E41625 - Qualified to UL’s MCIL Program - RoHS Compliant · Performance Attributes - Lead-free assembly compatible · Processing Advantages - FR-4 process compatible - UV blocking and AOI fluorescence Product Availability · Standard Material Offering: Laminate - 2 to 93 mil (0.05 to 2.4 mm) - Available in full size sheet or panel form · Copper Foil Type - HTE Grade 3 - RTF (Reverse Treat Foil) · Copper Weight - ? to 2 oz (18 to 70 μm) available - Heavier copper available - Thinner copper foil available · Standard Material Offering: Prepreg - Roll or panel form - Tooling of prepreg panels · Glass Fabric Availability - E-glass - Square weave glass
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