1. Chifukwa chiyani mumagwiritsa ntchito matabwa a ceramic

PCB wamba nthawi zambiri zopangidwa ndi mkuwa zojambulazo ndi gawo lapansi kugwirizana, ndi gawo lapansi zinthu zambiri galasi CHIKWANGWANI (FR-4), phenolic utomoni (FR-3) ndi zipangizo zina, zomatira nthawi zambiri phenolic, epoxy, etc. PCB processing chifukwa cha nkhawa matenthedwe, zinthu mankhwala, zosayenera kupanga ndondomeko ndi zifukwa zina, kapena m`kati kamangidwe chifukwa cha mbali ziwiri zamkuwa asymmetry, n'zosavuta kutsogolera madigiri osiyana a warping PCB bolodi.

Kusintha kwa PCB

Ndipo gawo lina la PCB - gawo lapansi la ceramic, chifukwa cha kutentha kwapang'onopang'ono, mphamvu yonyamulira, kutchinjiriza, kukulitsa kwamafuta, ndi zina zambiri, ndizabwino kwambiri kuposa bolodi wamba wamba magalasi a PCB, chifukwa chake amagwiritsidwa ntchito kwambiri pamagawo amagetsi amagetsi amphamvu kwambiri. , zakuthambo, zamagetsi zankhondo ndi zinthu zina.

Magawo a Ceramic

Ndi PCB wamba ntchito zomatira mkuwa zojambulazo ndi gawo lapansi kugwirizana, ceramic PCB ndi kutentha kwambiri chilengedwe, kudzera njira yomangira mkuwa zojambulazo ndi ceramic gawo lapansi pieced palimodzi, amphamvu kumanga mphamvu, mkuwa zojambulazo si kugwa, kudalirika mkulu, ntchito khola mu mkulu. kutentha, kutentha kwambiri chilengedwe

2. Zinthu zazikulu za ceramic substrate

Alumina (Al2O3)

Alumina ndi zinthu zambiri ntchito gawo lapansi mu ceramic gawo lapansi, chifukwa mu makina, matenthedwe katundu ndi magetsi poyerekeza ndi zina zambiri okusayidi ziwiya zadothi, mphamvu mkulu ndi bata mankhwala, ndi gwero wolemera wa zipangizo, oyenera zosiyanasiyana luso kupanga ndi akalumikidzidwa zosiyanasiyana. . Malinga ndi kuchuluka kwa aluminiyamu (Al2O3) akhoza kugawidwa mu 75 zadothi, 96 zadothi, 99,5 zadothi. Mphamvu zamagetsi za alumina sizimakhudzidwa ndi zinthu zosiyanasiyana za aluminiyamu, koma mawonekedwe ake amakina ndi matenthedwe amasintha kwambiri. Gawo laling'ono lokhala ndi chiyero chochepa limakhala ndi magalasi ambiri komanso nkhanza zazikulu. Kukwera kwa chiyero cha gawo lapansi, kumakhala kosalala, kophatikizana, kutayika kwapakatikati kumakhala kotsika, koma mtengo umakhalanso wapamwamba.

Beryllium oxide (BeO)

Imakhala ndi matenthedwe apamwamba kuposa aluminiyamu yachitsulo, ndipo imagwiritsidwa ntchito m'malo omwe matenthedwe apamwamba amafunikira. Imachepa mofulumira kutentha kupitirira 300 ℃, koma kukula kwake kumachepa ndi kawopsedwe.

Aluminium nitride (AlN) 

Aluminium nitride ceramics ndi zoumba ndi aluminium nitride powders monga gawo lalikulu la crystalline. Poyerekeza ndi alumina ceramic gawo lapansi, kutchinjiriza kukana, kutchinjiriza kupirira voteji apamwamba, otsika dielectric mosalekeza. Kutentha kwake ndi 7 ~ 10 nthawi ya Al2O3, ndipo mphamvu yake yowonjezera yowonjezera (CTE) imakhala yofanana ndi silicon chip, yomwe ndi yofunika kwambiri pazitsulo zamphamvu za semiconductor. Popanga, matenthedwe amtundu wa AlN amakhudzidwa kwambiri ndi zotsalira zotsalira za okosijeni, ndipo matenthedwe amafuta amatha kuchulukirachulukira pochepetsa mpweya wa okosijeni. Pakali pano, matenthedwe madutsidwe wa ndondomekoyi

Kutengera pazifukwa zomwe zili pamwambazi, zitha kudziwika kuti ma alumina ceramics ali pamalo otsogola m'magawo a ma microelectronics, magetsi amagetsi, ma microelectronics osakanikirana ndi ma module amphamvu chifukwa chakuchita bwino kwambiri.

Poyerekeza ndi msika wa kukula womwewo (100mm × 100mm × 1mm), zipangizo zosiyanasiyana za ceramic gawo lapansi mtengo: 96% aluminiyamu 9.5 yuan, 99% zotayidwa 18 yuan, zotayidwa nitride 150 yuan, beryllium okusayidi 650 yuan, tingaone kuti kusiyana kwamitengo pakati pa magawo osiyanasiyana ndikwambiri

3. Ubwino ndi kuipa kwa ceramic PCB

Ubwino wake

1. Large panopa kunyamula mphamvu, 100A panopa mosalekeza kudzera 1mm 0.3mm wandiweyani mkuwa thupi, kutentha kukwera pafupifupi 17 ℃
2. Kutentha kwa kutentha kumakhala pafupifupi 5 ℃ pamene 100A yamakono ikudutsa 2mm 0.3mm thupi lakuda lamkuwa.
3. Kuchita bwino kwa kutentha kwapang'onopang'ono, kuchuluka kwamafuta ochepa, mawonekedwe okhazikika, osavuta kupotoza.
4. Kutchinjiriza kwabwino, kukana kwamagetsi apamwamba, kuonetsetsa chitetezo chamunthu ndi zida.

Zoipa

Fragility ndi imodzi mwazovuta zazikulu, zomwe zimapangitsa kupanga matabwa ang'onoang'ono okha.

Mtengo ndi wokwera mtengo, zofunikira zamagetsi zamagetsi zimachulukirachulukira, bolodi la dera la ceramic kapena kugwiritsidwa ntchito muzinthu zina zapamwamba kwambiri, zotsika mtengo sizidzagwiritsidwa ntchito konse.

4. Kugwiritsa ntchito ceramic PCB

a. Module yamagetsi apamwamba kwambiri, gawo la solar panel, etc

1. High frequency switching power supply, solid state relay
2. Zamagetsi zamagalimoto, zakuthambo, zamagetsi zankhondo
3. Zida zowunikira kwambiri za LED
4. Mlongoti wolumikizana