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Isola FR408HR

Isola FR408HR laminate and prepreg products are manufactured with Isola’s patented high performance multifunctional resin system, reinforced with electrical grade (E-glass) glass fabric. This system delivers a 30% improvement in Z-axis expansion and offers 25% more electrical bandwidth (lower loss) than competitive products in this space. These properties coupled with superior moisture resistance at reflow, result in a product that bridges the gap from both a thermal and electrical perspective. The FR408HR system is also laser fluorescing and UV blocking for maximum compatibility with Automated Optical Inspection (AOI) systems, optical positioning systems and photo-imageable solder mask imaging.

Functions: Laminate, Prepreg

Reinforcement Material: Glass Fibers

End Uses: Medical Devices, PCB Materials

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Reinforcement Material
Composite Materials Functions

Features & Benefits

Ready-to-Use Product Features
Product Features

Industry Recognition

  • RoHS Compliant

Performance Attributes

  • CAF resistant
  • Lead-free assembly compatible
  • 0.8 mm pitch capable
  • 6x 260°C reflow capable
  • 6x 288°C solder float capable

Processing Advantages

  • FR-4 process compatible
  • Via filling capability
  • Multiple lamination cycles

Product Attributes

  • High Density Interconnect
  • High Speed Digital
  • High Thermal Reliability

Applications & Uses

Typical Market Applications
  • Networking and Communications
  • Aerospace and Defense
  • Computing, Storage and Peripherels
  • Medical, Industrial and Instrumentation

Properties

Flame Rating
Typical Properties
ValueUnitsTest Method / Conditions
Arc Resistance137.0SecondsIPC-TM-650
Comparative Tracking Index (CTI)2 (250-399)VoltsUL 746A ASTM D3638
Decomposition Temperature (Td) by TGA (5% weight loss)360.0°CIPC-TM-650
Dielectric Breakdownmin. 50kVIPC-TM-650
Dk, Loss Tangent(1 GHz)0.0091IPC-TM-650
Dk, Loss Tangent(10 GHz)0.0095IPC-TM-650
Dk, Loss Tangent(100 MHz)0.0072IPC-TM-650
Dk, Loss Tangent(2 GHz)0.0092IPC-TM-650
Dk, Loss Tangent(5 GHz)0.0098IPC-TM-650
Dk, Permittivity(1 GHz)3.69IPC-TM-650
Dk, Permittivity(10 GHz)3.65IPC-TM-650
Dk, Permittivity(100 MHz)3.72IPC-TM-650
Dk, Permittivity(2 GHz)3.68IPC-TM-650
Dk, Permittivity(5 GHz)3.64IPC-TM-650
Electric Strength (Laminate & laminated prepreg)70 (1741)kV/mm (V/mil)IPC-TM-650
Flammability (Laminate & laminated prepreg)V-0RatingUL 94
Flexural Strength Cross direction58.0ksiIPC-TM-650
Flexural Strength Length direction72.5ksiIPC-TM-650
Glass Transition Temperature (Tg) by DSC190.0°CIPC-TM-650
Moisture Absorption0.061%IPC-TM-650
Peel Strength (Low profile copper foil and very low profile copper foil all copper foil >17 μm [0.669 mil])1.14 (6.5)N/mm (lb/inch)IPC-TM-650
Peel Strength After process solutions (Standard profile copper)0.90 (5.1)N/mm (lb/inch)IPC-TM-650
Peel Strength After thermal stress (Standard profile copper)0.96 (5.5)N/mm (lb/inch)IPC-TM-650
Poisson's Ratio Cross direction0.133ASTM D3039
Poisson's Ratio Length direction0.137ASTM D3039
Relative Thermal Index (RTI)130.0°CUL 796
Surface Resistivity (After moisture resistance)2.6 x 10^6IPC-TM-650
Surface Resistivity (At elevated temperature)2.1 x 10^8IPC-TM-650
Tensile Strength Cross direction38.7ksiASTM D3039
Tensile Strength Length direction54.5ksiASTM D3039
Thermal Conductivity0.4W/m·KASTM E1952
Thermal Stress Etched [10 sec, 288ºC (550.4ºF)]PassIPC-TM-650
Thermal Stress Unetched [10 sec, 288ºC (550.4ºF)]PassIPC-TM-650
Time to Delaminate by T260 (Copper removed)60.0MinutesIPC-TM-650
Time to Delaminate by T288 (Copper removed)min. 30MinutesIPC-TM-650
Volume Resistivity (After moisture resistance)4.4 x 10^7MΩ-cmIPC-TM-650
Volume Resistivity (At elevated temperature)9.4 x 10^7MΩ-cmIPC-TM-650
X/Y-Axis CTE Pre-Tg16.0ppm/°CIPC-TM-650
Young's Modulus Cross direction3315.0ksiASTM D790-15e2
Young's Modulus Length direction3695.0ksiASTM D790-15e2
Z-Axis CTE 50 to 260°C, (Total Expansion)2.8%IPC-TM-650
Z-Axis CTE Post-Tg230.0ppm/°CIPC-TM-650
Z-Axis CTE Pre-Tg55.0ppm/°CIPC-TM-650

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Product Availability

Standard Material Offering: Laminate

  • Available in full size sheet or panel form

Copper Foil Type

  • RTF (Reverse Treat Foil)

Copper Weight

  • ½ 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
  • Mechanically spread glass