R-1785 
品牌： PANASONIC(松下)
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R-1785 型号参数
| 属性 | 参数值 |
|---|---|
| Glass transition temp.(Tg) :TMA,Temp. rising rate: 10°C/min (°C) | 150 |
| Solder heat resistance:JIS C6481,260°C solder float for 2min | No abnormality |
| CTE:α1,X-axis,IPC-TM-650 2.4.41,TMA (ppm/°C) | 19 (15) |
| CTE:α1,Y-axis,IPC-TM-650 2.4.41,TMA (ppm/°C) | 21 (17) |
| CTE:α1,Z-axis,IPC-TM-650 2.4.24,TMA (ppm/°C) | 50 |
| Dielectric constant (Dk):1MHz,IPC-TM-650 2.2.2.9,C-24/23/50 | 4.2 |
| Dielectric constant (Dk):1GHz,IPC-TM-650 2.2.2.9,C-24/23/50 | 4 |
| Dissipation factor (Df):1MHz,IPC TM-650 2.5.5.9,C-24/23/50 | 0.023 |
| Insulation resistance:JIS C6481,C-96/20/65 (MΩ) | 5x10^8 |
| Tracking resistance:IEC 60112 (V) | CTI≧600 |
| Accuracy of thickness (σ value) (mm) | 0.013 |
