Research Article
Experimental Validation of Fatigue Life of CCGA 624 Package with Initial Contact Pressure of Thermal Gap Pads under Random Vibration Excitation
Table 1
Properties of THERM-A-GAP G579 thermal gap pad [
17].
| Typical properties | Value | Test method |
| Standard thicknesses (mm) | 0.5 ~ 5.0 | ASTM D374 | Specific gravity | 2.9 | ASTM D792 | Hardness (Shore 00) | 30 | ASTM D2240 | Compression ratio (%, at various pressures) | At 34 kPa | 22 | ASTM C165 MOD | At 69 kPa | 33 | At 172 kPa | 55 | At 345 kPa | 68 | Continuous use temperature (°C) | −55 to 200 | — | Thermal impedance (°C·cm2/W, at 69 kPa, at 1 mm thickness) | 4.5 | ASTM D5470 | Coefficient of thermal expansion (ppm/°C) | 150 | ASTM E831 | Outgassing (%, TML/CVCM) | 0.19/0.06 | — | Shelf life (years from date of manufacture) | 2 | — |
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