Alumina PCB Ceramic PCB Manufacturing

Alumina PCBs (aluminium oxide-based printed circuit boards) isarudzo iri kuramba ichikurumbira yemhando yepamusoro-soro yemagetsi masisitimu nekuda kwekunaka kwazvo kwekupisa, magetsi, uye michina. Sezvo michina ichiwedzera kuoma uye kudiwa, alumina PCBs inopa zvakakosha mabhenefiti mune yakakwirira-simba, yakakwira-frequency, uye yakaoma-yemamiriro ekunze. Ichi chinyorwa chinopa kuongororwa kwakadzama kwealumina PCBs, kuvhara zvakanakira zvakasarudzika, kuomarara kwekugadzira kwavo, matambudziko ekugadzira, uye nzvimbo dzakakosha dzekushandisa.

Chii chinonzi Alumina PCBs?

MaPCB eAlumina mabhodhi edunhu akadhindwa akavakirwa paceramic anoshandisa aluminum oxide (Al₂O₃) sechinhu chepasi, zvichiita kuti asiyane nemaPCB eFR-4 akajairwa . Kunyange zvazvo zvinhu zveFR-4—zvinoumbwa nefiberglass-reinforced epoxy—zvichishandiswa zvakanyanya nekuda kwemutengo wakaderera uye kushanda zvakanaka, zvinonetsa mukushandiswa kunoda thermal conductivity yepamusoro uye simba remakanika. MaPCB eAlumina anobudirira munzvimbo idzi uye anofarirwa pamidziyo ine simba guru, maRF/microwave circuits, uye mashandisirwo mumamiriro ezvinhu akaoma.

MaPCB eCeramic anogona kugadzirwa achishandisa zvinhu zvakasiyana-siyana, zvinosanganisira aluminium nitride (AlN) uye beryllium oxide (BeO), asi alumina ndiyo inonyanya kushandiswa nekuda kwemutengo wayo wakaenzana, kuwanikwa kwayo, uye hunhu hwayo hwakanaka.

Mabhenefiti Akakosha eAlumina PCBs

Alumina PCBs inopa akati wandei matekiniki mabhenefiti anoita kuti ive yakanakira yekuda maapplication:

1. Superior Thermal Conductivity

Alumina's thermal conductivity inowanzoitika pakati pe20-30 W/m·K, inodarika FR-4's thermal conductivity ye0.3-0.5 W/m·K. Ichi chivakwa chakakosha pakubvisa kupisa kunoitwa neakakwira-simba zvikamu semagetsi amplifiers, light-emitting diodes (LEDs), uye high-frequency transistors. Kushanda kwemafuta ekutonga kunodzivirira kupisa kwechikamu, izvo zvinogona kuderedza kushanda kana kutungamirira kukukundikana kwechigadzirwa.

Kunyangwe alumina ichikwiridzirwa nealuminium nitride (AlN) maererano nekupisa kwekushisa (iyo inogona kusvika kusvika 170 W/m·K), inoramba iri chinhu chinoshandiswa zvakanyanya nekuda kwemutengo wayo wakanaka uye kushanda kwakakwana mumashandisirwo mazhinji.

2. High Electrical Insulation

Alumina PCBs inopa yakanakisa magetsi ekudzivirira, ane dielectric simba rinopfuura 15-20 kV/mm. Izvi zvinoita kuti alumina ive yakanakira substrate yeakakwira-voltage maapplication, sezvo ichikwanisa kumira zvakanyanya kushushikana kwemagetsi pasina kuputsa. Iyo yemidziyo yakaderera dielectric kugara (yakatenderedza 9.8 pa1 MHz) inoderedza kuderedzwa kwechiratidzo, chinhu chakakosha cheRF uye microwave maseketi.

3. Mechanical Simba uye Durability

Alumina inopa yakasarudzika mechini simba, ine simba rekumanikidza rinosvika 3,500 MPa uye simba rekukotama rinobva pakati pe300-400 MPa. Uku kusimba kunovimbisa kuita kwakavimbika kunyangwe munzvimbo dzakafumurwa kushushikana kwemakanika, senge mota kana aerospace application. Uyezve, kuoma kwealumina (inenge 9 pachikero cheMohs) inova nechokwadi chekuti maPCB anoramba akasimba uye asingachinji kupfeka kwenguva yakareba.

4. Kushanda Kwakagadzikana muMamiriro Akanyanya

Alumina ine coefficient of thermal expansion (CTE) inosvika 7-8 ppm/°C, iri pedyo nesilicon's CTE (2.5-3 ppm/°C). Uku kuwirirana kunoita kuti alumina ive yakavimbika substrate yemaseketi akasanganiswa anosanganisa silicon-based components. Pamusoro pezvo, kupikisa kwealumina pakuora kwekemikari nekuora, pamwe chete nekupisa kwayo kwepamusoro kwekushanda (kusvika 1600 ° C), kunoibvumira kuita nguva dzose munzvimbo dzakaoma.

5. Environmental uye Radiation Resistance

Alumina PCBs anogara achipokana nehunyoro, mwaranzi, uye akasiyana ezvakatipoteredza zvinhu, zvichiita kuti avimbike zvakanyanya mukuda maapplication akadai sekutaura setiraiti, masisitimu emauto, uye kuongorora nzvimbo. Kugadzikana kwavo munzvimbo dzakanyanyisa kunowedzera hupenyu hwavo uye kunovimbisa hupenyu hurefu hwemagetsi emagetsi akaiswa mumamiriro ezvinhu akaoma.

Mhando dzeAlumina Substrates uye Hunhu Hwadzo

Alumina substrates anowanikwa mumagiredhi akasiyana siyana, imwe neimwe ichipa zvivakwa zvakasiyana zvakakodzerwa nemashandisirwo chaiwo:

1. 99.6% Alumina PCB

Iyi ndeye yakakwirira-kuchena alumina zvinhu zvinoshandiswa zvakanyanya mutete-firimu maapplication uko kurongeka kwepamusoro uye hurema hudiki hunodiwa. Iyo ine nzvimbo yekunyunguduka inosvika 1600 ° C uye inoratidza yakanakisa yekupisa uye michina zvinhu. Nekuda kwekuchena kwayo kwepamusoro, 99.6% alumina yakanakira zvikumbiro zvinoda kuvimbika kwakanyanya, senge aerospace uye zvemagetsi zvekurapa.

2. 99.5% Alumina PCB

Zvakafanana ne99.6% alumina, chinhu ichi chinowanzo shandiswa mumaseketi emicrowave. Inogovera zvivakwa zvakawanda ne99.6% alumina asi kazhinji inowanikwa uye inodhura-inoshanda, ichiita kuti ive yakakurumbira kune maapplication uko zvese kuita uye mutengo zvinofanirwa kuenzana.

3. 96% Alumina PCB

Iyi ndiyo yakajairwa-giredhi alumina inoshandiswa mumakobvu-firimu maseketi uye hybrid microelectronic zvishandiso. Iine nzvimbo yakaderera zvishoma yekunyunguduka (yakakomberedza 1400 ° C) uye yakaderedza simba remagetsi zvichienzaniswa nepamusoro-kuchena alumina asi inoshandiswa zvakanyanya nekuda kwekudhura kwayo mumagetsi evatengi, zvigadzirwa zvemaindasitiri, uye kushandiswa kwemotokari.

Kugadzira Maitiro eAlumina PCBs

Alumina PCBs anogadzirwa achishandisa akati wandei maitiro, imwe neimwe yakarongedzerwa kune zvinhu zveceramic zvivakwa. Maitiro akakosha anosanganisira:

1. Yakakora Firimu Technology

Mukugadzira firimu rakakora, paste inoitisa-kazhinji sirivha, goridhe, platinamu, kana palladium-inodhindwa-inodhindwa pane alumina substrate. Iyo yedunhu pateni inoumbwa dhizaini nedhiri, nechero imwe neimwe ichipfutirwa pakupisa kwakanyanya (850 ° C kusvika 1000 ° C) kusanganisa iyo conductive zvinhu kune ceramic pamusoro. Tekinoroji yefirimu yakakora yakanyatsokodzera maseketi akawanda mumagetsi emagetsi nekuda kwekureruka kwayo uye mutengo wakaderera.

Zvisinei, tekinoroji yemafirimu akakora ine miganho maererano nekunyatsojeka uye kugona kwayo, izvo zvingave zvisina kukodzera mashandisirwo e -high-density interconnect (HDI).

2. Mutete Firimu Technology

Kugadzirwa kwemafirimu akatetepa kunopa kurongeka kwepamusoro uye kwakanaka chimiro chekugadzirisa zvichienzaniswa nemaitiro akakora emafirimu. Mukuita uku, simbi yakatetepa (yakaita segoridhe, mhangura, kana aruminiyamu) inoiswa paalumina substrate ichishandisa matekiniki akaita sekuputika kana kubuda. Chimiro chedunhu chinotsanangurwa kuburikidza nephotolithography uye kemikari etching, zvichiita kuti pave nepamusoro-density maseketi ane mitsetse yakanaka kusvika pachiyero chemicron.

Tekinoroji yemafirimu tekinoroji inowanzo shandiswa muRF uye microwave application, uko kutendeseka kwechiratidzo uye kuita kwepamusoro-frequency kwakakosha.

3. Direct Bonded Copper (DBC)

Direct Bonded Copper (DBC) inzira iyo foil yemhangura inosungirirwa zvakananga kune alumina substrate kuburikidza nepamusoro-tembiricha process (kazhinji inosvika 1065 ° C). Iyo mhangura inoumba metallurgical bond nealumina, zvichiita kuti pave nekubatana kwakavimbika uye kwakasimba. Iyo mhangura yemhangura inogona kubva yakadzikwa kuti igadzire matunhu edunhu.

DBC inoshandiswa zvakanyanya mumagetsi emagetsi, akadai se insulated-gedhi bipolar transistor (IGBT) modules uye high-power LED chiedza, uko zvose zviri zviviri zvakakwirira-zvinotakura simba uye zvinobudirira kupisa kupisa zvakakosha.

4. Low-Temperature Co-fired Ceramics (LTCC)

LTCC inosanganisira kurongedza akawanda akaturikidzana ealumina tepi, yega yega ine yakafanotsanangurwa edunhu mapatani akagadzirwa kubva kune conductive paste. Aya akaturikidzana anobva aiswa laminated uye kubatanidzwa pamwe chete kune tembiricha yakaderera (pasi pe900 ° C). Tekinoroji yeLTCC yakanakira kugadzira compact multilayer maseketi uye inobvumira kubatanidzwa kwezvinhu zvisingaite mukati mezvikamu, zvichiita kuti ive yakakodzera kune maapplication akaita seRF modules uye microwave zvishandiso.

Dhizaini Mafungiro eAlumina PCBs

Paunenge uchigadzira alumina PCBs, mainjiniya anofanirwa kuzvidavirira kune akati wandei akasiyana zvinhu:

1. High-Frequency Circuit Design

Alumina's low dielectric kurasikirwa uye yakakwirira-frequency kugadzikana inoita kuti ive yakanakira RF uye microwave maseketi. Nekudaro, kunyatsotariswa kunofanirwa kupihwa kune impedance yekufananidza uye chiratidzo chekuvimbika. Vagadziri vanofanirwa kudzikisa crosstalk uye parasitic capacitance, kunyanya mumaseketi ekumhanya-mhanya, kuve nechokwadi chekuita kwakakwana.

2. Mechanical Simba uye Durability

Kunyangwe alumina yakasimba zvakanyanya, ine zvakare brittle kana ichienzaniswa nezvinhu zvakaita seFR-4. Kunyatsotariswa kwehukobvu hwebhodhi, zvimiro zvekutsigira, uye matekiniki ekumisikidza zvinodikanwa kudzivirira kutadza kwemuchina, kunyanya mumashandisirwo akazarurwa kune vibration kana kuvhunduka.

3. Thermal Management Strategies

Alumina's high thermal conductivity inoita kuti inyatsokodzera kutonga kwekupisa, asi mamwe matanho angave akadikanwa kuwedzera kupisa kupisa. Vagadziri vanowanzo batanidza zvinodziya vias, masingi ekupisa, uye kwakaringana chikamu chekuisa optimize mashandiro ekupisa kwealumina PCBs, kunyanya mukushandisa-simba repamusoro.

4. Kubatanidzwa neSilicon Zvikamu

Alumina PCBs anowanzo shandiswa mumasanganiswa magadzirirwo ane silicon-based components. Nekuda kwekusiyana kweCTE pakati pealumina nesilicon, mainjiniya anofanirwa kunyatso funga nezvekuwedzera kwemafuta panguva yekugadzira chikamu. Maitiro ekubatanidza akananga, akadai seDBC, anogona kubatsira kudzikisira nyaya dzine chekuita nekusawirirana kwekupisa.

Zvishandiso zveAlumina PCBs

• • Zvemagetsi Electronics
  • Power electronics
  • RF uye Microwave Systems
  • Aerospace uye Kudzivirira
  • LED Lighting
  • Medical mano
  • Renewable Energy Systems
  • Telecommunications Infrastructure
  • Consumer Electronics

mhedziso

Alumina PCBs inopa mabhenefiti akakosha pamusoro pechinyakare PCB zvinhu seFR-4, zvichiita kuti zvive zvakakosha mumagetsi emazuva ano. Nehutongi hwepamusoro hwekupisa, simba remuchina, uye kuvharirwa kwemagetsi, alumina PCBs akanyatsokodzera kune-high-simba, high-frequency, uye hutsinye-zvakatipoteredza zvikumbiro. Sezvo tekinoroji iri kuramba ichishanduka, ma alumina PCB akagadzirira kuita basa rakatokura munzvimbo dzakaita semagetsi emotokari, mamodule emagetsi, maRF system, uye IoT, zvichisimbisa kukosha kwavo kwakakosha mumagetsi echizvarwa chinotevera.