IsoClad 917 RF Copper Clad Laminate Sheet
IsoClad 917 laminates are nonwoven fiberglass/PTFE composites engineered for printed circuit board substrates. Their nonwoven reinforcement makes them well-suited for applications where the final circuit needs to be formed or bent, such as in conformal or "wrap-around" antennas.
Using longer random fibers and a proprietary manufacturing process, IsoClad laminates deliver greater dimensional stability and superior dielectric constant uniformity compared to other nonwoven fiberglass/PTFE materials with similar dielectric properties.
IsoClad 917 laminates (Er=2.17, 2.20) feature a low fiberglass-to-PTFE ratio, offering the lowest available dielectric constant and dissipation factor achievable with a PTFE and fiberglass composite.
Features:
-Nonwoven fiberglass reinforcement
-Low dielectric constant
-Extremely low signal loss
Benefits:
-More flexible than woven fiberglass laminates
-Highly isotropic electrical properties in X, Y, and Z axes
Typical Applications:
-Conformal antennas
-Stripline and microstrip circuits
-Missile guidance systems
-Radar and electronic warfare systems
| Property | IsoClad 917 | Condition | Test Method |
| Dielectric Constant @ 10 GHz | 2.17, 2.20 | C23/50 | IPC TM-650 2.5.5.5 |
| Dissipation Factor @ 10 GHz | 0.0013 | C23/50 | IPC TM-650 2.5.5.5 |
| Thermal Coefficient of Er (ppm/°C) | -157 | -10°C to +140°C | IPC TM-650 2.5.5.5 Adapted |
| Peel Strength (lbs.per inch) | 10 | After Thermal | IPC TM-650 2.4.8 |
| Volume Resistivity (MΩ-cm) | 1.5 x 1010 | C96/35/90 | IPC TM-650 2.5.17.1 |
| Surface Resistivity (MΩ) | 1.0 x 109 | C96/35/90 | IPC TM-650 2.5.17.1 |
| Arc Resistance (seconds) | >180 | D48/50 | ASTM D-495 |
| Tensile Modulus (kpsi) | 133, 120 | A, 23°C | ASTM D-638 |
| Tensile Strength (kpsi) | 4.3, 3.8 | A, 23°C | ASTM D-882 |
| Compressive Modulus (kpsi) | 182 | A, 23°C | ASTM D-695 |
| Flexural Modulus (kpsi) | 213 | A, 23°C | ASTM D-790 |
| Dielectric Breakdown (kv) | >45 | D48/50 | ASTM D-149 |
| Density (g/cm3) | 2.23 | A, 23°C | ASTM D-792 Method A |
| Water Absorption (%) | 0.04 | E1/105 + D24/23 | MIL-S-13949H 3.7.7 IPC TM-650 2.6.2.2 |
| Coefficient of Thermal | 0°C to 100°C | IPC TM-650 2.4.24 | |
| Expansion (ppm/°C) | Mettler 3000 | ||
| X Axis | 46 | Thermomechanical | |
| Y Axis | 47 | Analyzer | |
| Z Axis | 236 | ||
| Thermal Conductivity (W/mK) | 0.263 | 100°C | ASTM E-1225 |
| Outgassing | 125°C, ≤10-6 torr | ||
| Total Mass Loss (%) | 0.02 | Maximum 1.00% | |
| Collected Volatile | 0.00 | Maximum 0.10% | |
| Condensable Material (%) | |||
| Water Vapor Regain (%) | 0.02 | ||
| Visible Condensate (±) | NO | ||
| Flammability | Meets requirements of UL94-V0 |
C48/23/50, E24/125 | UL 94 Vertical Burn IPC TM-650 2.3.10 |
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