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Pyralux® LF Sheet Adhesive is proprietary B-staged modified acrylic adhesive. This stand-alone adhesive is primarily utilized to bond flexible inner layers or rigid cap layers in multilayer laminates. It is also widely used to bond flexible circuits to rigid boards during the fabrication of rigid-flex circuits, as well as bonding stiffeners and heat sinks to flexible circuits and rigid boards.
| Property Group | Property Name | Value | Test Method |
|---|---|---|---|
| Dielectric | Dielectric Constant (Dk) 10GHz | 2.8 | ASTM D2520 / IPC-TM-650 2.5.5.3 |
| Dielectric Constant (Dk) 1MHz | 3.5 | ASTM D2520 / IPC-TM-650 2.5.5.3 | |
| Loss Tangent (Df) 10GHz | 0.02 | ASTM D2520 / IPC-TM-650 2.5.5.3 | |
| Loss Tangent (Df) 1MHz | 0.03 | ASTM D2520 / IPC-TM-650 2.5.5.3 | |
| Electrical / Insulation | Surface Resistance (Ω) | >1×10^14 | IPC-TM-650 2.5.17 |
| Volume Resistivity (Ω・cm) | >1x10^15 | IPC-TM-650 2.5.17 |
| Property Name | Form Factor | Package | Adhesive Type | Adhesive Thickness (μm) | Adhesive Thickness (mil) |
|---|---|---|---|---|---|
| LF0100 | Sheet adhesive | Roll | Acrylic | 25.0 | 1.0 |
| LF0200 | Sheet adhesive | Roll | Acrylic | 51.0 | 2.0 |
| LF0300 | Sheet adhesive | Roll | Acrylic | 76.0 | 3.0 |
| LF0400 | Sheet adhesive | Roll | Acrylic | 102.0 | 4.0 |
| LF1500 | Sheet adhesive | Roll | Acrylic | 13.0 | 0.5 |
| LF1700 | Sheet adhesive | Roll | Acrylic | 18.0 | 0.7 |
| LF1800 | Sheet adhesive | Roll | Acrylic | 20.0 | 0.8 |
| FL7049 | Sheet adhesive | Roll | Acrylic | 38.0 | 1.5 |