I kēia manawa, ʻo ka ulu ʻana o ka uwē no ka mālama ʻana i ke kaiapuni a me ka mālama ʻana i ka ikehu ua lawe mai i nā kaʻa uila ikehu hou i loko o ka maka. He kuleana koʻikoʻi ko nā lako pūʻolo mana kiʻekiʻe i ka hoʻoponopono ʻana i ka wikiwiki o ke kaʻa a me ka mālama ʻana i ka hoʻololi ʻana i ka AC a me DC. Ua kau ka paikikala wela kiʻekiʻe i nā koi koʻikoʻi no ka hoʻoheheʻe ʻana i ka wela o ka ʻeke uila, ʻoiai ʻo ka paʻakikī a me ka ʻokoʻa o ke kaiapuni hana e koi ai i nā mea hoʻopihapiha e loaʻa ai ke kūpaʻa haʻalulu maikaʻi a me ka ikaika kiʻekiʻe e pāʻani i ke kuleana kākoʻo. Eia kekahi, me ka hoʻomohala wikiwiki ʻana o ka ʻenehana uila mana hou, kahi i hōʻike ʻia e ka volta kiʻekiʻe, ke kiʻekiʻe o kēia manawa, a me ke alapine kiʻekiʻe, ʻoi aku ka koʻikoʻi o ka hoʻopau ʻana o ka wela o nā modula mana i hoʻohana ʻia i kēia ʻenehana. ʻO nā mea hoʻoheheʻe seramika i loko o nā ʻōnaehana hoʻopili uila ke kī i ka hoʻoheheʻe ʻana i ka wela maikaʻi, loaʻa iā lākou ka ikaika kiʻekiʻe a me ka hilinaʻi i ka pane ʻana i ka paʻakikī o ke kaiapuni hana. ʻO nā substrates seramika nui i hana nui ʻia a hoʻohana nui ʻia i nā makahiki i hala iho nei ʻo Al2O3, BeO, SiC, Si3N4, AlN, etc.
He kuleana koʻikoʻi ʻo Al2O3 ceramic i ka ʻoihana substrate dissipation wela e pili ana i kāna kaʻina hoʻomākaukau maʻalahi, ka insulation maikaʻi a me ke kūpaʻa wela kiʻekiʻe. Eia nō naʻe, ʻaʻole hiki ke hoʻokō i ka haʻahaʻa haʻahaʻa haʻahaʻa o Al2O3 i nā koi hoʻomohala o ka mana kiʻekiʻe a me ka mīkini uila kiʻekiʻe, a pili wale ia i ke kaiapuni hana me nā koi haʻahaʻa wela. Eia kekahi, ʻo ka ikaika haʻahaʻa haʻahaʻa e kaupalena ʻia ai ka hoʻohana ʻana o nā seramika Al2O3 e like me nā substrate dissipation wela.
Loaʻa i nā substrates seramika BeO kiʻekiʻe ka thermal conductivity a me ka haʻahaʻa dielectric mau e hoʻokō i nā koi o ka hoʻopau wela kūpono. Akā ʻaʻole kūpono ia i ka hoʻohana nui ʻana ma muli o kona ʻawaʻawa, e pili ana i ke olakino o nā limahana.
Manaʻo ʻia ʻo AlN ceramic he mea moho no ka substrate hoʻoheheʻe wela ma muli o kona hoʻoili wela kiʻekiʻe. Akā ʻo AlN ceramic he ʻino ke kūpaʻa haʻalulu wela, ka deliquescence maʻalahi, ka ikaika haʻahaʻa a me ka paʻakikī, ʻaʻole kūpono i ka hana ma kahi ʻano paʻakikī, a paʻakikī ke hōʻoia i ka hilinaʻi o nā noi.
He kiʻekiʻe ka wela o ka SiC ceramic, ma muli o kona nalo dielectric kiʻekiʻe a me ka haʻahaʻa haʻahaʻa haʻahaʻa, ʻaʻole kūpono ia no nā noi ma nā wahi hana kiʻekiʻe a me nā kaiapuni.
ʻIke ʻia ʻo Si3N4 ʻo ia ka mea ʻoi aku ka maikaʻi o ka mea hoʻoheheʻe seramika maikaʻi loa me ka conductivity thermal kiʻekiʻe a me ka hilinaʻi kiʻekiʻe ma ka home a ma waho. ʻOiai ʻoi aku ka haʻahaʻa o ka hoʻoili wela o ka substrate ceramic Si3N4 ma mua o ko AlN, hiki i kona ikaika flexural a me kona paʻakikī haʻihaʻi ke piʻi aku ma mua o ʻelua o AlN. I kēia manawa, ʻoi aku ka kiʻekiʻe o ka conductivity thermal o Si3N4 ceramic ma mua o ka Al2O3 ceramic. Eia hou, ʻo ke koena o ka hoʻonui wela o nā substrate seramika Si3N4 kokoke i kēlā me nā kristal SiC, ka substrate semiconductor hanauna 3rd, e hiki ai iā ia ke hoʻokūkū paʻa me nā mea kristal SiC. Hana ʻo ia iā Si3N4 i mea makemake ʻia no nā substrates conductivity thermal kiʻekiʻe no 3rd generation SiC semiconductor power device.
