Specifications

Specifications table for model R-A555(W)/R-A550(W)
ItemPerformance characteristics
Tg (DSC) (°C)-
Tg (TMA), (°C)160
Tg (DMA) (°C)200
Td (Thermal Decomposition) (°C)380
T288 (Without Cu) (min)> 60
T288 (With Cu) (min)> 60
CTE-X, <Tg (ppm/℃)11-13
CTE-Y <Tg (ppm/℃)13-15
CTE-Z <Tg (ppm/℃)41
CTE α2 Z-axis: Test Method IPC-TM-650 2.4.24; Condition A (ppm/℃)270
Thermal Conductivity, (W/m・K)0.40
Volume Resistivity (MΩ・cm)

1 x 10⁹ 

Surface Resistivity (mΩ)1 x 10⁸
Dk at 1 GHz3.4 (RC:70%)
Dk at 10 GHz-
Dielectric Constant (Dk) @ 12Ghz; Test Method Balanced-type Circular Disk Resonator; Condition C-24/23/50-
Df at 1 GHz0.008 (RC:70%)
Df at 10 GHz-
Df at 12 GHz-
Water Absorption (%)0.07
Flexural Warp (MD) (GPa)26
Flexural Fill (TD) (GPa)24
Peel Strength (1 Oz. Cu) (kN/m)-
Flammability94V-0
Sample Thickness (mm)0.8mm

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R-A555(W)/R-A550(W)

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