Multilayer Ceramic PCB: Mamiriro, Kugadzira Maitiro, uye Mashandisirwo

Chii chinonzi Multilayer Ceramic PCB Technology?

A multilayer ceramic PCB inosanganisa akawanda eceramic dielectric layers nemukati conductor mapatani kugadzira matatu-dimensional edunhu architecture. Kusiyana ne-single-layer ceramic board, izvi zvimiro zvemultilayer zvinogonesa zvakanyanya kukwirira kwedunhu density uye yakaoma yekubatanidza zvirongwa mukati me compact fomu zvinhu. Iyi yepamberi yekurongedza nzira yave yakakosha kune emazuvano emagetsi masisitimu anoda yepamusoro yekupisa manejimendi, yakakwira-frequency kuita, uye kuvimbika kwakasiyana.

Iyo shanduko yakananga kune akawanda-ceramic substrates inopindura zvakananga kukuwedzera kudiwa kubva kune yakakwirira-simba zvemagetsi, millimeter-wave kutaurirana, uye kuchengetedza-yakakosha mota masisitimu. Maindasitiri akadai seaerospace, radar masisitimu, uye kutaurirana kweRF anowedzera kuvimba neaya ma substrates kuti asangane nekuomesera kwekuita kwekuita uko kwakajairwa organic PCBs haigone kuunza yakakwana yekupisa kana magetsi kuita.

Multilayer Ceramic PCB Mamiriro uye Makiyi Zvikamu

Layer Composition

Iwo akakosha zvivharo zvekuvaka zve multilayer ceramic PCB zvinosanganisira alternating dielectric ceramic layers uye patterned conductor layers dzakasungirirwa kuburikidza nepamusoro-tembiricha co-firing. Chimwe nechimwe chikamu chinoshanda chakanangana nebasa mune yakazara substrate performance:

• Dielectric layers - Alumina (Al₂O₃), aluminium nitride (AlN), kana girazi-ceramic composites yakasarudzwa zvichienderana nekupisa kwekushisa uye dielectric zvinodiwa
• Conductor mapatani -Sirivha, tungsten, molybdenum, kana mhangura yakasarudzwa zvinoenderana nekupisa tembiricha uye magetsi ekuita zvinangwa.
• Via interconnections -Nzvimbo dzemagetsi dzakamira dzinobatanidza akawanda routing layer, ichigonesa matatu-dimensional redunhu dhizaini
• Pasi uye ndege dzemagetsi - Yakamisikidzwa yemukati maseru anosimudzira emagetsi kudzivirira uye kuderedza switching ruzha

Stack-Up Architecture

Iyo yakajairwa multilayer ceramic substrate ine mana kusvika makumi maviri akaturikidzana, kunyangwe madhizaini akasarudzika anogona kusanganisira zvimwe. Imwe neimwe dielectric layer inotangira pa50 kusvika 250 micrometer muhukobvu, ichibvumira kutonga chaiko pamusoro pe interlayer capacitance uye hunhu impedance. Kuburikidza nekubatana, kwakagadzirwa nelaser drilling kana mechanic punching isati yaiswa, gadzira iyo yakatwasuka yemagetsi yekubatanidza inogonesa kuomarara nzira mundege dzakawanda.

Zvakanakira Pamusoro peSingle-Layer Dhizaini

Kunyange zvazvo maPCB eceramic ane layer imwe chete achipa hunhu hwakanaka hwekupisa, mabhodhi eceramic ane layer akawanda anopa kuchinjika kukuru kwekugadzira. Magadzirirwo emhando nhatu anobvisa zvipingamupinyi zvekuyambuka, anogonesa nzira dzakasiyana dzekufambisa zvinhu nekudzora nzvimbo chaiyo, uye anogadzirisa huwandu hwakanyanya hwezvikamu. Mapurani epasi emukati anopa kukwirirana kwema electromagnetic zvichienzaniswa nemagadzirirwo e single-layer, zvichiita kuti zvimiro zve multilayer zvive zvakakosha kune RF inonzwisisika uye madhijitari anomhanyisa.

Multilayer Ceramic PCB Manufacturing: LTCC uye HTCC Maitiro

Low Temperature Co-fired Ceramic (LTCC)

LTCC tekinoroji inoshanda pakupisa tembiricha yakatenderedza 850 ° C, ichigonesa yakanyanya conductive sirivheri kana goridhe-yakavakirwa simbi. Iyi yakadzika tembiricha renji inobvumira kubatanidzwa kweakamisikidzwa passive zvinhu senge capacitors uye resistors zvakananga mukati meceramic layer. Mhedzisiro yacho yakanyanya kusanganiswa mamodule ane kuderedzwa kwegungano kuoma uye kuvandudzwa kwemagetsi emagetsi kuburikidza nekupfupika kwekubatanidza nzira.

High Temperature Co-fired Ceramic (HTCC)

Ma substrates eHTCC anopisa panosvika 1600°C, zvichida maconductors esimbi anoita setungsten kana molybdenum. Iyo HTCC maitiro inogadzira zvivakwa zveceramic zvine simba repamusoro remuchina, kusimba kwepamusoro, uye zvirinani hermeticity zvichienzaniswa neLTCC akasiyana. Aya maitiro anoita HTCC multilayer ceramic mabhodhi anonyanya kukodzera kune hutsinye kwezvakatipoteredza mashandisirwo uko mechanic kusimba uye kuvimbika kwenguva refu kwakakosha.

Manufacturing Process Matanho

Kugadzirwa kwe multilayer ceramic PCBs kunotevera kurongeka kwakanyatso kurongeka:

1. Green tepi kugadzirira - Ceramic poda yakasanganiswa nema organic binders inokandwa mumapepa matete, anochinjika
2. Conductor kudhinda -Kudhinda skrini kunoshandisa masimbi esimbi mumapateni akanyatso kutsanangurwa pane imwe neimwe layer
3. Kuburikidza nekugadzira uye kuzadza -Makomba anoroverwa kana laser-drilled uye anozozadzwa nezvinhu zvinoitisa
4. Layer alignment uye lamination -Matanho akawanda akanyatso kurongeka uye akatsikirirwa pamwechete pasi pemamiriro akadzorwa
5. Co-firing - Iyo gungano inopinda inodzorwa kupisa kunopisa kunze mabhaidhi, sinter ceramic particles, uye fuses conductor layer.
6. Kutumira-kugadzirisa -Surface metallization, inotengeswa inopera, uye chaiyo dicing inopedzisa kugadzirwa

Magetsi uye Kupisa Kwekuita kweMultilayer Ceramic PCB

Dielectric Zvivakwa

Multilayer ceramic PCB substrates inoratidza dielectric constants inowanzobva pa5 kusvika 9, zvichienderana nekuumbwa kwezvinhu. Iyi ine mwero dielectric inogarogonesa inodzorwa impedance dhizaini yeakakwira-frequency maapplication uchichengetedza compact wedunhu geometri. Iyo yakaderera kurasikirwa tangent yezvinhu zveceramic inovimbisa kushomeka kwechiratidzo, ichiita aya ma substrates akanakira mamirimita-wave uye microwave maseketi anoshanda kupfuura 30 GHz.

Thermal Management Kugona

Aluminium nitride multilayer ceramic boards inoburitsa thermal conductivity values ​​kusvika 170 W/m·K, inodarika zvakajairwa alumina substrates uye inosvika mhangura kuita. Iyi yakasarudzika yekuparadzira kupisa kugona inobvumira kukwira kwakananga kweakakwira-simba semiconductor zvishandiso pasina yepakati yekupisa yekushongedza zvinhu. Kunyangwe yakajairwa alumina multilayer ceramic PCBs, ine thermal conductivity yakatenderedza 20-30 W/m·K, inodarika organic substrates nehurongwa hwehukuru.

Thermal Kuwedzera Matching

Iyo coefficient yekuwedzera kwekudziya kweceramic substrates inowirirana zvakanyanya nesilicon semiconductor zvinhu pa6 kusvika 8 ppm/°C. Uku kuenderana kwekupisa kunoderedza kushushikana kwe thermomechanical panguva yekumhanya bhasikoro, kuderedza solder joint kuneta njodzi mu chip-on-board magungano. Iyo dimensional kugadzikana kwema multilayer ceramic board pane tembiricha yakanyanyisa inovimbisa kushanda kwemagetsi kunoenderana kubva ku cryogenic kusvika kune yakakwira tembiricha yekushandisa.

Yakakosha Yakanakira Multilayer Ceramic PCB Technology

Iyo multilayer ceramic PCB inopa akasiyana mabhenefiti anoita kuti ive yakakosha kune inoda maapplication:

• High-density interconnection -Matatu-dimensional architecture anogara zviuru zve kuburikidza nekubatanidza uye akawanda routing maseru mukati mediki tsoka.
• Superior thermal dissipation -Kupararira kwekupisa kwakasarudzika kunogonesa kusimba kwesimba repamusoro uye kuvandudza kushanda kwechishandiso mukupisa-yakanyanya maapplication.
• Excellent high-frequency performance -Yakaderera dielectric kurasikirwa uye inodzorwa impedance maitiro anotsigira millimeter-wave maseketi ane kushomeka kwechiratidzo.
• Mechanical kusimba -Ceramic substrates inodzivisa ngura, chengetedza kutendeseka kwechimiro pasi pekudedera uye mitoro yekuvhunduka, uye inoratidza kuderera kudiki kwehupenyu hwakawedzerwa.
• Kubatanidzwa kwechikamu -Tekinoroji yeLTCC inogonesa zvakamisikidzwa zvisizvo, kuderedza kuomarara kwegungano nekuvandudza kushanda kwemagetsi

Dhizaini Kuganhurirwa uye Matambudziko Ekugadzira

Kufungisisa kweMutengo

Mutengo wekugadzira we multilayer ceramic PCBs unopfuura zvakanyanya iwo ezvakajairwa organic substrates nekuda kwehunyanzvi hwekushandisa, chaiyo yekugadzirisa michina, uye yakawedzera kutenderera kwekugadzira. Iyo co-firing process inoda yakanyatso kudzora mamiriro ekunze uye tembiricha profiles, ine mikana mishoma yebasa rework kana kukanganisa kukaitika. Izvi zvehupfumi zvinhu zvinoita kuti multilayer ceramic mabhodhi akanyanya kukodzera kune maapplication uko zvinodiwa zvekuita zvinopembedza mari.

Processing Complexity

Kuwana chaiyo dhizaini-kune-layer kurongeka panguva yekumisikidza kunopa tekinoroji matambudziko, kunyanya sezvo kuburikidza nesaizi inodzikira uye layer kuverenga inowedzera. Shrinkage panguva yekupfurwa inofanira kunyatsofanotaurwa uye kubhadharwa mune yekutanga artwork, sezvo dimensional shanduko inogona kusvika 15-20 muzana. Kudiwa kwemitemo yekugadzira yakasarudzika uye hunyanzvi hwekugadzira zvinogadzira zvipingamupinyi kumakambani asina kujairana neceramic substrate tekinoroji.

Size Constraints

Panel saizi ye multilayer ceramic PCB kugadzirwa kazhinji inoramba idiki pane organic PCB mapaneru, inodzikamisa hupfumi hwechiyero. Yakakura-fomati yeceramic substrates inotarisana nenjodzi yakawedzera ye warpage uye kutsemuka panguva yekupfura, zvinonyatso kumanikidza zviyero zvinoshanda kune madiki module mafomati.

Multilayer Ceramic PCB Applications Across Industries

RF uye Microwave Systems

RF uye microwave masisitimu anoshandisa zvakanyanya multilayer ceramic substrates kune mafirita, diplexers, magetsi amplifiers, uye antenna feed network anoshanda kubva kuUHF kuburikidza nemamirimita-wave frequency. Iyo yakaderera dielectric kurasikirwa uye inodzorwa impedance hunhu inogonesa yakakwira-inoshanda passive maseketi ane kushoma kwekuisa kurasikirwa. Satellite kutaurirana, 5G zvivakwa, uye radar masisitimu zvinoenderana neaya maceramic modules ekuvimbika masaini kugadzirisa pama frequency anopfuura makumi matatu GHz.

Zvemagetsi Electronics

Masisitimu ekubatsira mutyairi epamberi uye mapuratifomu emotokari anozvimiririra anoda multilayer ceramic PCBs eradar transceivers anoshanda pa24 GHz uye 77 GHz frequency. Iko kugadzikana kwekupisa uye kuvimbika kweceramic substrates inovimbisa kushanda kwakafanana mukati memotokari tembiricha kubva -40 ° C kusvika +150 ° C. Sensor fusion modules inosanganisa akawanda mabasa pane imwechete multilayer ceramic mabhodhi, kuderedza kuoma kwehurongwa uku uchivandudza kuenderana kwemagetsi.

Power electronics

Mashandisirwo ane simba guru anobatsirwa nehunhu hwepamusoro hwekuparadza kupisa kwemidziyo yeceramic ine layer yakawanda:

• IGBT modules -Kubatana kwakananga kwesimba semiconductors kunogonesa compact dhizaini nekuvandudza kushanda zvakanaka
• DC-DC converters - Yakaderera parasitic inductances inotsigira nekukurumidza kushandura kumhanya uye kuderedzwa kwemagetsi kupindira
• Vatyairi ve LED - High thermal conductivity inochengetedza tembiricha yekusangana kuti ive yakakwana kubuda kwechiedza uye nehupenyu hwakawedzerwa

Aerospace uye Medical Devices

Aerospace masisitimu anoda kuvimbika uye hermeticity yakapihwa neHTCC multilayer ceramic mabhodhi ekutaurirana masisitimu uye sensor mapakeji. Zvishandiso zvekurapa zvinoshandisa miniaturized multilayer ceramic PCBs yemidziyo inoisirwa uye yekuongorora michina uko biocompatibility uye kugadzikana kwenguva refu zvakakosha zvinodiwa.

mhedziso

Multilayer ceramic PCB tekinoroji inopa isingaenzaniswi mashandiro ekuda maapplication emagetsi anoda kuvimbika kwepamusoro, kutonga kwepamusoro kwemafuta, uye hunhu hwepamusoro-frequency. Iko kusanganiswa kweatatu-dimensional routing kugona, yakagadzika magetsi zvivakwa, uye yakasimba mechanicha chimiro chinoita kuti ma substrates aya ave akakosha kune aerospace, mota, uye telecommunication masisitimu.

Highleap Electronics inonyanya kugadzira maPCB eceramic akawanda achishandisa maitiro eLTCC neHTCC , ichipa mhinduro dzakakwana kubva pakutaurirana kwekutanga kwekugadzira kuburikidza nekugadzira ma prototype uye kugadzira huwandu. Chikwata chedu cheinjiniya chinogadzirisa magadzirirwo e stack-up, chinosarudza zvinhu zvakakodzera, uye chinovimbisa kugadzirwa kwemagadzirirwo akaomarara e multilayer. Bata boka redu reinjiniya remaapplications kuti uongorore kuti tekinoroji ye ceramic substrate yakawanda inogona sei kuvandudza masisitimu ako emagetsi echizvarwa chinotevera.