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370HR层压板是使用高性能180°C Tg FR-4多功能环氧树脂制成的，该材料专为要求大散热性能，可靠性和耐CAF性能的多层印刷线路板（高速PCB）应用而设计。 该材料具有出色的热性能，且热膨胀系数（CTE）低，并且其机械，化学和防潮性能达到或超过了传统FR-4材料的性能,370HR用于数千种PCB设计中，并且在热可靠性，CAF性能，易加工性和顺序层压设计的可靠性能方面被证明是同类产品中最好的。
| Property | Typical Value | Units | Test Method | |
|---|---|---|---|---|
| Metric (English) | IPC-TM-650 (or as noted) | |||
| Glass Transition Temperature (Tg) by DSC | 180 | °C | 2.4.25C | |
| Decomposition Temperature (Td) by TGA @ 5% weight loss | 340 | °C | 2.4.24.6 | |
| Time to Delaminate by TMA (Copper removed) | A. T260 B. T288 | 60 30 | Minutes | 2.4.24.1 |
| Z-Axis CTE | A. Pre-Tg B. Post-Tg C. 50 to 260°C, (Total Expansion) | 45 230 2.8 | ppm/°C ppm/°C % | 2.4.24C |
| X/Y-Axis CTE | Pre-Tg | 13/14 | ppm/°C | 2.4.24C |
| Thermal Conductivity | 0.4 | W/mK | ASTM E1952 | |
| Thermal Stress 10 sec @ 288ºC (550.4ºF) | A. Unetched B. Etched | Pass | Pass Visual | 2.4.13.1 |
| Dk, Permittivity | A. @ 100 MHz B. @ 1 GHz C. @ 2 GHz D. @ 5 GHz E. @ 10 GHz | 4.24 4.17 4.04 3.92 3.92 | — | 2.5.5.3 2.5.5.9 Bereskin Stripline Bereskin Stripline Bereskin Stripline |
| Df, Loss Tangent | A. @ 100 MHz B. @ 1 GHz C. @ 2 GHz D. @ 5 GHz E. @ 10 GHz | 0.0150 0.0161 0.0210 0.0250 0.0250 | — — — | 2.5.5.3 2.5.5.9 Bereskin Stripline 2.5.5.5 2.5.5.5 |
| Volume Resistivity | A. After moisture resistance B. At elevated temperature | 3.0 x 108 7.0 x 108 | MΩ-cm | 2.5.17.1 |
| Surface Resistivity | A. After moisture resistance B. At elevated temperature | 3.0 x 106 2.0 x 108 | MΩ | 2.5.17.1 |
| Dielectric Breakdown | >50 | kV | 2.5.6B | |
| Arc Resistance | 115 | Seconds | 2.5.1B | |
| Electric Strength (Laminate & laminated prepreg) | 54 (1350) | kV/mm (V/mil) | 2.5.6.2A | |
| Comparative Tracking Index (CTI) | 3 (175-249) | Class (Volts) | UL 746A ASTM D3638 | |
| Peel Strength | A. Low profile copper foil and very low profile copper foil all copper foil >17 μm [0.669 mil] B. Standard profile copper 1. After thermal stress 2. At 125ºC (257ºF) 3. After process solutions |
1.25 (7.0) 1.14 (6.5) | N/mm (lb/inch) | 2.4.8C
2.4.8.3 2.4.8.3 |
| Flexural Strength | A. Length direction B. Cross direction | 90.0 77.0 | ksi | 2.4.4B |
| Tensile Strength | A. Length direction B. Cross direction | 55.9 35.6 | ksi | ASTM D3039 |
| Young's Modulus | A. Length direction B. Cross direction | 3744 3178 | ksi | ASTM D790-15e2 |
| Poisson's Ratio | A. Length direction B. Cross direction | 0.177 0.171 | — | ASTM D3039 |
| Moisture Absorption | 0.15 | % | 2.6.2.1A | |
| Flammability (Laminate & laminated prepreg) | V-0 | Rating | UL 94 | |
| Relative Thermal Index (RTI) | 130 | °C | UL 796 | |
| The data, while believed to be accurate and based on analytical methods considered to be reliable, is for information purposes only. Any sales of these products will be governed by | ||||
