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PTFE woven glass fabric copper clad laminates with high permittivity(F4BM255)
1.Description:
F4BM255 is laminated by laying up of non-alkali fiberglass fabric,bond film,with Ptfe
resin and Polytetrafluoroethylene film,according to the scientific formulation and strict technology process.
2.Specifications:
Types | Double side |
Dimensions (mm) | 12''x10''(300x250mm), 14''x15''(350x380mm), 17''x22''(440x550mm), 18''x24''(460x610mm), 20''x20''(500x500mm), 20''x24''(500x600mm), 33''x33''(840x840mm), 24''x36''(610x914mm) |
Special dimension can be customized according to customer’s requirement. | |
Dielectric constant (@ 10GHz) | 2.55±0.05 |
Thickness and Tolerance(mm) | 0.50±0.05 |
Thickness includs two sides of the copper foil thickness. | |
For special thickness,customized lamination is available. | |
ED Copper thickness(OZ) | 1/2 or 1 or 2 (electrodeposited copper foil ) |
Volume Resistivity (MΩ.cm) | Condition:Normal state ≥6×106 |
Surface Resistivity (MΩ.cm) | Condition:Normal state(500V DC) ≥1×105 |
Dissipation factor (@ 10GHz) | Less than or equal to 0.0015 |
Copper peel strength (1oz copper) | ≥18N/cm |
Coefficient of thermal expansion(ppm/℃) X Axis Y Axis Z Axis |
Condition: -55℃ to 288℃ 16 21 173 |
Flammability | Meets requirements of UL94-V0 |

3.Technical index:
3.1 Mechanical strength & Chemical property

3.2 Electrical property

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