Kusiyana kwakukulu pakati pa HDI ndi PCB wamba - nthawi yatsopano yolumikizirana kwambiri
HDI (High Density Interconnection) ndi bolodi laling'ono lopangidwira ogwiritsa ntchito voliyumu yochepa. Poyerekeza ndi ma PCB wamba, chinthu chofunikira kwambiri cha HDI ndi kuchuluka kwa mawaya ake. Kusiyana pakati pa ziwirizi kumawonekera makamaka m'mbali zinayi zotsatirazi.
1.HDI ndi yaying'ono komanso yopepuka kulemera
Ma board a HDI amapangidwa ndi ma board achikhalidwe okhala ndi mbali ziwiri ngati ma board apakati ndipo amamatiridwa ndi lamination yokhazikika. Mtundu uwu wa circuit board wopangidwa ndi lamination yokhazikika umatchedwanso Build-up Multilayer board (BUM). Poyerekeza ndi ma circuit board achikhalidwe, ma HDI ali ndi ubwino wokhala "opepuka, owonda, afupi, komanso ang'onoang'ono".
Kulumikizana kwa magetsi pakati pa zigawo za HDI board kumachitika kudzera mu dzenje loyendetsa, lobisika/losawona kudzera mu maulumikizidwe. Kapangidwe kake ndi kosiyana ndi ma board wamba okhala ndi zigawo zambiri. Ma via ambiri obisika/osawona amagwiritsidwa ntchito mu ma board a HDI. HDI imagwiritsa ntchito kuboola mwachindunji kwa laser, pomwe PCB yokhazikika nthawi zambiri imagwiritsa ntchito kuboola kwamakina, kotero kuchuluka kwa zigawo ndi chiŵerengero cha mbali nthawi zambiri kumachepetsedwa.
2. HDI njira yopangira ma motherboard
Kuchuluka kwa ma HDI boards kumaonekera makamaka mu kuchuluka kwa mabowo, mizere, ma pad, ndi makulidwe a interlayer.
Bolodi la HDI lili ndi mapangidwe ang'onoang'ono odutsa monga blind via, zomwe zimawonetsedwa makamaka muukadaulo wopanga ma micro-hole wokhala ndi mainchesi osakwana 150um komanso zofunikira kwambiri pankhani ya mtengo, magwiridwe antchito opanga komanso kuwongolera kulondola kwa malo a mabowo. Pali mabowo odutsa okha m'mabodi achikhalidwe okhala ndi zigawo zambiri ndipo palibe ma blind via ang'onoang'ono.
Kukonzanso m'lifupi/kutalika kwa mzere: Izi zikuwonekera makamaka mu zofunikira zomwe zikukulirakulira za zolakwika za mzere ndi kukhwima kwa pamwamba pa mzere. Kawirikawiri, m'lifupi/kutalika kwa mzere sikuyenera kupitirira 76.2um.
Kuchulukana kwa ma pad: kuchulukana kwa soldering kumaposa 50/cm2
Kuchepa kwa makulidwe a dielectric: Izi zimawonekera makamaka mu chizolowezi cha makulidwe a dielectric pakati pa zigawo mpaka 80um ndi pansi, ndipo zofunikira pakufanana kwa makulidwe zikukulirakulira, makamaka pamabolodi okhala ndi kuchuluka kwakukulu ndi ma substrates opakika okhala ndi mawonekedwe oletsa kuponderezedwa.
3. Magwiridwe antchito amagetsi a bolodi la HDI ndiabwino
HDI sikuti imangothandiza kuti mapangidwe a zinthu zomaliza akhale ochepa, komanso imakwaniritsa miyezo yapamwamba yogwirira ntchito zamagetsi komanso magwiridwe antchito.
Kuchuluka kwa HDI komwe kumalumikizidwa kumathandiza kuti ma signal akhale amphamvu komanso kudalirika. Kuphatikiza apo, ma HDI board ali ndi kusintha kwabwino pa RF interference, electromagnetic wave interference, electrostatic discharge, heat conduction, ndi zina zotero. HDI imagwiritsanso ntchito ukadaulo wa full digital signal process control (DSP) ndi ukadaulo wina wopangidwa ndi patent, wokhala ndi kuthekera kosinthira katundu wonse komanso mphamvu yayitali yodzaza katundu kwakanthawi kochepa.
Ma board a 4.HDI ali ndi zofunikira kwambiri pa kuikidwa m'manda kudzera pa plugging.
Kaya ndi kukula kwa bolodi kapena magwiridwe antchito amagetsi, HDI ndi yabwino kuposa PCB wamba. Ndalama iliyonse ili ndi mbali ziwiri. Mbali ina ya HDI ndi yakuti popeza imapangidwa ngati PCB yapamwamba, malire ake opangira ndi zovuta zake zimakhala zapamwamba kwambiri kuposa za PCB wamba. Palinso nkhani zambiri zomwe ziyenera kuganiziridwa panthawi yopanga - makamaka kubisika kudzera mu pulagi.
Pakadali pano, vuto lalikulu pakupanga HDI limabisika kudzera mu pulagi. Ngati HDI yobisika kudzera sinalumikizidwe bwino, mavuto akulu a khalidwe adzabuka, kuphatikizapo m'mphepete mwa bolodi losafanana, makulidwe a dielectric osafanana, ndi ma pitted pads, ndi zina zotero.
Pamwamba pa bolodi pali malo osagwirizana ndipo mizere si yowongoka, zomwe zimayambitsa vuto la gombe m'malo otsetsereka, zomwe zingayambitse zolakwika monga mipata ya mizere ndi kusagwirizana.
Kulephera kwapadera kumasinthasinthanso chifukwa cha makulidwe osafanana a dielectric, zomwe zimapangitsa kuti chizindikirocho chisakhazikike.
Kusalingana kwa soldering pad kudzapangitsa kuti ma phukusi otsatirawa akhale osagwira bwino ntchito komanso kutayika kwa zigawo zake.
Chifukwa chake, si opanga ma PCB onse omwe ali ndi luso komanso mphamvu zogwirira ntchito bwino pa HDI. Ndi zaka zoposa 20 zokumana nazo popanga ma PCB, RICHPCBA imapereka ukadaulo waposachedwa kwambiri wopanga ma circuit board komanso miyezo yapamwamba kwambiri yamakampani amagetsi. Zogulitsa zomwe zikuphatikizapo: 1-68 layers PCB, HDI, multilayer PCB, FPC, rigid pcb, flex pcb, rigid-flex pcb, ceramic pcb, high frequency pcb, ndi zina zotero. Sankhani RICHPCBA ngati wopanga ma PCB wodalirika ku China.
