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Products > IS420

IS420 4.04 Dk , 0.021 Df
170 Tg , 340 Td
/101 /98 /99

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 systems (AOI), optical positioning systems and photoimagable solder-mask imaging.

Key Features

Industry Approvals

  • IPC-4101C  /98/99/101
  • UL Recognized – FR-4, File Number E45456
  • Qualified to UL’s MCIL Program

High Thermal Performance

  • Tg of 170°C (DSC)
  • Low CTE for reliability

UV Blocking and AOI Fluorescence

  • High throughput and accuracy during PCB fabrication and assembly

Superior Processing

  • Closest to conventional FR-4 processing of all high speed materials

Standard Availability

  • Thickness: 0.002″ [.05 mm] to 0.093″ [2.4 mm]
  • Available in sheet or panel form
  • Copper Foil Cladding: Grade 3 (HTE), ½, 1 and 2 oz.
  • Foil Options: Reverse treat
  •  Prepregs: Available in roll or panel form