The HDI PCB masanjidwe atha kukhala opanikizika kwambiri, koma malamulo oyenera amapangidwe angakuthandizeni kupanga bwino.

Ma PCBS otsogola kwambiri amakhala ndi magwiridwe antchito m’malo ang’onoang’ono, nthawi zambiri amagwiritsa ntchito ma ics / soCs, zigawo zapamwamba, ndi zocheperako. Kukhazikitsa kapangidwe kamapangidwe amenewa molondola kumafunikira zida zamphamvu zoyendetsera malamulo zomwe zimatha kuyang’anira kulumikizana ndi kapangidwe kake motsutsana ndi malamulo apangidwe popanga PCB. Ngati mukugwiritsa ntchito dongosolo lanu loyamba la HDI, zitha kukhala zovuta kuwona kuti ndi malamulo ati omwe ayenera kukhazikitsidwa mukamayambitsa dongosolo lanu la PCB.

Khazikitsani masanjidwe a HDI PCB

Ndi HDI PCBS, pali zochepa kusiyanitsa zinthu izi ndi ma PCBS wamba kupatula gawo limodzi ndi kachulukidwe ka waya. Ndawonapo opanga akunena kuti bolodi la HDI lili ndi mabowo 10 miliyoni kapena ochepera, 6 miliyoni kapena zingwe zochepa, kapena 0.5 mm kapena kupatula pini. Wopanga wanu angakuuzeni kuti HDI PCBS imagwiritsa ntchito mabowo akhungu pafupifupi 8 mil kapena kuchepera, ndipo mabowo ang’onoang’ono akhungu amabowoleredwa ndi lasers.

In some ways, they are both true, because there is no specific threshold for the composition of an HDI PCB layout. Aliyense atha kuvomereza kuti mapangidwe ake akaphatikiza ma microholes, ndi bolodi la HDI. Pazithunzi, muyenera kukhazikitsa malamulo musanakhudze masanjidwewo. Muyenera kusonkhanitsa opanga asanakhazikitse malamulo opangira. Mukamaliza kuchita izi, muyenera kukhazikitsa malamulo ndi kapangidwe kake

Kutalika kwazingwe ndi kukula kwake. The width of a trace with its impedance and line width will determine when you enter the HDI system. Kutalika kwa waya kukakhala kochepa mokwanira, maenje obowolera amakhala ocheperako kotero kuti ayenera kupangidwa ngati ma microholes.

Kusintha kwa zigawo. Maenje obowolerawo amafunika kupangidwa mosamalitsa kutengera kukula kwake, zomwe zimadaliranso ndi makulidwe osanjikiza ofunikira. Layer transformations should be defined early so that they can be quickly placed during routing.

Chilolezo. Zotsatira ziyenera kusiyanitsidwa wina ndi mnzake komanso kuchokera kuzinthu zina (mapadi, misonkhano, ndege, ndi zina zambiri) zomwe sizili pa netiweki. Cholinga apa ndikuwonetsetsa kuti kutsatira malamulo a HDI DFM ndikupewa crosstalk yambiri.

Other wiring restrictions, such as cable length adjustment, maximum cable length, and allowable impedance deviation during wiring are also important, but they will apply outside the HDI board. The two most important points here are through-hole size and line width. Zolungamitsa zitha kutsimikiziridwa ndi njira zosiyanasiyana (mwachitsanzo, kuyerekezera) kapena kutsatira malamulo oyenera a chala. Samalani ndi zam’mbuyomu, chifukwa izi zitha kubweretsa zochitika pomwe pali crosstalk yochuluka kwambiri kapena kachulukidwe kakang’ono ka waya.

Lamination ndi perforation

Katundu wa HDI amatha kuyambira pazigawo zochepa mpaka zingapo kuti akwaniritse kuchuluka kwa mayendedwe ake. Ma board omwe ali ndi pini yayikulu BGA amatha kukhala ndi kulumikizana mazana pa kotala iliyonse, kotero ma perforations akuyenera kukhazikitsidwa popanga masanjidwe osanjikiza amitundu ya HDI PCB.

Ngati mungayang’ane woyang’anira masanjidwe osanjikiza mu mapulogalamu a PCB, mwina simungathe kutanthauzira momveka bwino masinthidwe osanjikiza ngati ma microholes. It doesn’t matter; Muthabe kukhazikitsa zosanjikiza kenako ndikukhazikitsa malire a kukula kwa dzenje m’malamulo apangidwe.

Kutha kuyitanitsa kachipangizo kakang’ono kameneka ndi kothandiza mukakhazikitsa malamulo ndikukonzekera template. Kukhazikitsa malamulo opangira zingwe kudzera m’mabowo, mutha kutanthauzira malamulo apangidwe oti amangogwiritsa ntchito ma microholes okha. Izi zimakupatsani mwayi wokhazikitsira malire ndi kukula kwa pad ndi mulingo wamabowo.

Musanayambe kukhazikitsa malamulo apangidwe, muyenera kufunsa wopanga za momwe amagwirira ntchito. Muyenera kukhazikitsa kulumikizana kwa zingwe mumalamulo opangira kuti muwonetsetse kuti impedance yolumikizira imayang’aniridwa pamtengo wofunidwa. Nthawi zina, kuwongolera ma impedance sikofunikira, ndipo mungafunenso kuchepetsa kutalika kwa zingwe pa bolodi la HDI kuti mukhale ndi kachulukidwe kakang’ono ka waya.

Yendani m’lifupi mwake

Mutha kudziwa kutalika kwa zingwe zama waya m’njira zingapo. Choyamba, pakuwongolera komwe kungayende bwino, muyenera chimodzi mwazida izi:

Terengani kukula kwake ndi cholembera ndi pepala (njira yovuta)

Calculator Paintaneti (Njira yachangu)

Zosintha m’munda zimaphatikizidwa muzida zanu zopangira ndi mawonekedwe (njira yolondola kwambiri)

Zoyipa zazowerengera pamzera pakuwerengetsa kwa ma impedance a wiring, ndipo lingaliro lomwelo limagwira ntchito pakusintha kukula kwa zingwe zamagawo a HDI PCB.

Kuti muyambe kufalikira kwa mzere, mutha kutanthauzira ngati cholepheretsa mkonzi wamalamulo, monga momwe mudachitira ndi kukula kwa dzenje. Ngati simukudandaula za kuwongolera impedance, mutha kukhazikitsa m’lifupi. Apo ayi, muyenera kudziwa impedance pamapindikira a PCB lamination ndi kulowa m’lifupi izi monga kapangidwe lamulo.

Kusamala mosamala kumafunikira chifukwa m’lifupi mwake waya sayenera kukhala yayikulu kwambiri kukula kwa pad. Ngati chingwe cholamulira cha impedance ndichachikulu kwambiri, makulidwe a laminate ayenera kuchepetsedwa, chifukwa izi zimakakamiza kuti mulifupi muchepetse, kapena kukula kwa pad kungawonjezeke. Malingana ngati kukula kwa nsanja kumapitilira zomwe zalembedwa muyezo wa IPC, zili bwino kuchokera pakudalirika.

chilolezo

Mukamaliza ntchito ziwiri zofunika kwambiri zomwe zatchulidwa pamwambapa, muyenera kudziwa kusiyana komwe kulipo. Tsoka ilo, kusiyanasiyana pakati pamayendedwe sikuyenera kusinthidwa kukhala malamulo a 3W kapena 3H, popeza malamulowa sagwiritsidwa ntchito molondola ku matabwa apamwamba okhala ndi ma liwiro othamanga. M’malo mwake, ndibwino kutsanzira crosstalk pamizere yolinganizidwa ndikuwona ngati crosstalk yapangidwa kwambiri.