Umehluko omkhulu phakathi kwe-HDI ne-PCB evamile - inkathi entsha yokuxhumana kwabantu abaningi
I-HDI (High Density Interconnection) iyibhodi yesekethe ehlanganisiwe eyenzelwe abasebenzisi abasebenzisa ivolumu ephansi. Uma kuqhathaniswa nama-PCB avamile, isici esibaluleke kakhulu se-HDI ubuningi bayo bezintambo obuphezulu. Umehluko phakathi kwalokhu okubili ubonakala kakhulu kulezi zici ezine ezilandelayo.
1. I-HDI incane futhi ilula ngesisindo
Amabhodi e-HDI enziwe ngamabhodi endabuko anezinhlangothi ezimbili njengamabhodi ayinhloko futhi aqiniswa nge-lamination eqhubekayo. Lolu hlobo lwebhodi lesifunda elenziwe nge-lamination eqhubekayo lubizwa nangokuthi ibhodi le-Build-up Multilayer (BUM). Uma liqhathaniswa namabhodi esifunda endabuko, ama-HDI anezinzuzo zokuba "alula, acinene, amafushane, futhi amancane".
Ukuxhumana kukagesi phakathi kwezingqimba zebhodi le-HDI kutholakala ngokusebenzisa imbobo eqhubayo, efihliwe/engaboni ngokuxhumeka. Isakhiwo sayo sihlukile kumabhodi wesekethe ajwayelekile anezingqimba eziningi. Inani elikhulu lama-vias ambozwe nge-micro/blind asetshenziswa kumabhodi e-HDI. I-HDI isebenzisa ukubhoboza okuqondile nge-laser, kuyilapho i-PCB ejwayelekile ivame ukusebenzisa ukubhoboza ngomshini, ngakho-ke inani lezingqimba kanye nesilinganiso sesici livame ukuncishiswa.
2. Inqubo yokukhiqiza i-motherboard ye-HDI
Ubuningi obukhulu bamabhodi e-HDI bubonakala kakhulu ekubuneni kwezimbobo, imigqa, ama-pad, kanye nobukhulu bezingqimba eziphakathi.
Imbobo encane edlulayo: Ibhodi le-HDI liqukethe imiklamo emincane edlulayo efana ne-blind via, ebonakala kakhulu kubuchwepheshe bokwakha imbobo emincane enobubanzi obungaphansi kuka-150um kanye nezidingo eziphezulu ngokwezindleko, ukusebenza kahle kokukhiqiza kanye nokulawula ukunemba kwesikhundla sembobo. Kukhona imbobo edlulayo kuphela kumabhodi wesekethe endabuko anezingqimba eziningi futhi azikho i-blind via ezincane.
Ukulungiswa kobubanzi/isikhala somugqa: Lokhu kubonakala kakhulu ezidingweni eziqinile zokukhubazeka komugqa kanye nokungalungi kobuso bomugqa. Ngokuvamile, ububanzi/isikhala somugqa akumele sidlule u-76.2um.
Ubuningi bephedi obuphezulu: ubuningi bokuxhumana kwe-soldering bukhulu kuno-50/cm2
Ukuncipha kobukhulu be-dielectric: Lokhu kubonakala kakhulu ekuthambekeleni kobukhulu be-dielectric obuphakathi kwezingqimba kuya ku-80um nangaphansi, futhi izidingo zokufana kobukhulu ziya ngokuya ziba nzima, ikakhulukazi kumabhodi anabantu abaningi kanye nezindawo zokupakisha ezine-impedance control ephawulekayo.
3. Ukusebenza kukagesi kwebhodi le-HDI kungcono
I-HDI ayigcini nje ngokwenza imiklamo yomkhiqizo wokugcina ibe mincane kakhulu, kodwa futhi ihlangabezana nezindinganiso eziphakeme zokusebenza kahle kwe-elekthronikhi.
Ukwanda kobuningi bokuxhumana kwe-HDI kuvumela amandla esignali athuthukisiwe futhi kuthuthukisa ukuthembeka. Ngaphezu kwalokho, amabhodi e-HDI anokuthuthuka okungcono ekuphazamisekeni kwe-RF, ukuphazamiseka kwamagagasi kagesi, ukukhishwa kwe-electrostatic, ukuqhutshwa kokushisa, njll. I-HDI isebenzisa ubuchwepheshe obugcwele be-digital signal process control (DSP) kanye nobuchwepheshe obuningi obunelungelo lobunikazi, obunokuguquguquka komthwalo ophelele kanye nekhono eliqinile lokulayisha ngokweqile lesikhathi esifushane.
4. Amabhodi e-HDI anezidingo eziphezulu kakhulu zokuxhuma nge-burryvia.
Kungakhathaliseki ukuthi usayizi webhodi noma ukusebenza kukagesi, i-HDI ingcono kune-PCB evamile. Yonke imali inezinhlangothi ezimbili. Olunye uhlangothi lwe-HDI ukuthi njengoba ikhiqizwa njenge-PCB ephezulu, umkhawulo wayo wokukhiqiza kanye nobunzima benqubo kuphakeme kakhulu kunowe-PCB evamile. Kukhona futhi nezinkinga eziningi okudingeka zinakwe ngesikhathi sokukhiqiza - ikakhulukazi ezifihliwe ngokuxhuma.
Njengamanje, iphuzu eliyinhloko lobuhlungu kanye nobunzima ekukhiqizweni kwe-HDI kugqitshwa ngokuxhuma. Uma i-HDI egqitshwe nge-ayixhunyiwe kahle, kuzovela izinkinga ezinkulu zekhwalithi, kufaka phakathi imiphetho yamabhodi engalingani, ukujiya kwe-dielectric okungalingani, kanye nama-pitted pads, njll.
Ubuso bebhodi abulingani futhi imigqa ayiqondile, okubangela ukwenzeka kolwandle ezindaweni ezigobile, okungase kuholele ezifweni ezifana nezikhala zemigqa kanye nokunqamuka.
I-impedance yesici izoshintshashintsha ngenxa yobukhulu obungalingani be-dielectric, okubangela ukungazinzi kwesignali.
Ukungalingani kwephedi yokunamathisela kuzoholela ekhwalithini engeyinhle yokupakisha okulandelayo kanye nokulahlekelwa okubangelwa yizingxenye.
Ngakho-ke, akubona bonke abakhiqizi be-PCB abanekhono namandla okwenza umsebenzi omuhle ku-HDI. Njengoba benolwazi lweminyaka engaphezu kwengu-20 ekukhiqizeni i-PCB, i-RICHPCBA inikeza ubuchwepheshe bamuva bokukhiqiza amabhodi wesekethe aphrintiwe kanye nezindinganiso zekhwalithi ephezulu embonini ye-elekthronikhi. Imikhiqizo efaka: i-PCB engu-1-68, i-HDI, i-PCB enezingqimba eziningi, i-FPC, i-rigid pcb, i-flex pcb, i-ceramic pcb, i-high frequency pcb, njll. Khetha i-RICHPCBA njengomkhiqizi wakho we-PCB othembekile eShayina.
