| 摘要 |
Thermal stresses which could lead to fracture of a plate 6 of boron nitride forming part of a thermally conductive electrically insulating mounting for an electrical component 1 such as a high power thyristor, are minimised by providing thin sheets 7, 8 of a material of relatively low coefficient of expansion (eg Mo or W) between plate 6 and adjacent massive bodies 4, 5 which typically are of Cu. A casing 9, 10, 11 may surround the boron nitride plate to contain an electrically insulating oil in which it is immersed. <IMAGE> |
