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Packaging Materials - Substrates Properties Chart |
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Material |
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Chemical
Symbol |
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Coefficient
of Thermal Expansion (ppm/K) |
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Thermal
Conductivity (W/m*K) |
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Density
(g/cc) |
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Melting
Temperature (°C) |
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Alloy
42 |
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NiFe |
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4.8 |
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109 |
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8.12 |
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1426 |
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Alumina |
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Al2O3 |
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6.4 |
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30 |
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3.91 |
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2030 |
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Aluminum |
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Al |
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23.4 |
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237 |
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2.69 |
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660 |
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Aluminum
Nitride |
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AlN |
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4.5 |
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184 |
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3.21 |
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2300 |
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Beryillia |
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BeO |
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6.7 |
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281 |
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2.91 |
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2530 |
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Beryllium |
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Be |
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11.2 |
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200 |
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1.86 |
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1287 |
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Copper |
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Cu |
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16.8 |
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401 |
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8.95 |
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1083 |
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Copper/Invar/Copper |
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20/60/20 |
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5.2 |
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18 |
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8.4 |
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N/A |
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Copper/Moly/Copper |
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13/74/13 |
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5.8 |
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185 |
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8.89 |
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N/A |
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Gallium
Arsenide |
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GaAs |
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6.5 |
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47 |
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5.26 |
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1238 |
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Gold |
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Au |
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14.2 |
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317 |
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19.34 |
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1063 |
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Kovar |
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NiFeCo |
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4.9 |
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17 |
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8.37 |
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1450 |
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Molybdenum |
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Mo |
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4.9 |
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138 |
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10.22 |
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2623 |
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Nickel |
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Ni |
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13.3 |
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91 |
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8.92 |
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1453 |
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Nickel/Moly/Nickel |
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50/90/5 |
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5.58 |
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132 |
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10.09 |
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N/A |
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Silicon |
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Si |
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4.2 |
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148 |
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2.33 |
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1410 |
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Silicon
Carbide |
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SiC |
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3.7 |
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277 |
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3.21 |
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2700 |
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Silver |
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Ag |
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9.6 |
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429 |
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10.5 |
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962 |
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Tungsten |
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W |
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4.5 |
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174 |
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19.31 |
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3380 |
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Tungsten
Copper |
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75W25Cu |
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8.3 |
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234 |
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14.91 |
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N/A |
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