Kukosha kwe vanachandagwinyira anochinjika pcb haigone kutarisirwa pasi muPBB yekugadzira. Chimwe chikonzero ndeye maitiro ekuti miniaturization. Uye zvakare, kudiwa kwePCBS yakaoma iri kuomarara nekuda kwekuchinjika uye mashandiro egungano re3D. Nekudaro, havazi vese vagadziri vePCB vanokwanisa kusangana neyakaomarara inoshanduka uye kuomarara pcb yekugadzira maitiro. Semi-shanduka akadhindwa wedunhu mabhodhi anogadzirwa neyakagadziriswa inoderedza ukobvu hwesimbi yakaoma kusvika 0.25mm +/- 0.05mm. Izvi, zvakare, zvinobvumira kuti bhodhi ishandiswe mune zvinoshandiswa zvinoda kukotamisa bhodhi uye kurisimudza mukati meimba. Iyo ndiro inogona kushandiswa kune imwe-nguva yekukotamisa kuiswa uye kuiswa kwakawanda-kukombama.

Heino mhedziso yehumwe hunhu hunoita kuti ive yakasarudzika:

FR4 semi – inochinja PCB maitiro

L Chinhu chakakosha kwazvo chinoshanda zvakanyanya pakushandisa kwako ndechekuti chinoshanduka uye chinokwanisa kuchinjika panzvimbo iripo.

L Kugadzikana kwayo kunowedzerwa nenyaya yekuti kuchinjika kwayo hakutadzise kufambisa chiratidzo kwayo.

L Zvakarerukawo.

Kazhinji, semi-inoshanduka PCBS inozivikanwa zvakare nemutengo wavo wakanakisa nekuti maitiro avo ekugadzira anowirirana neanogona kugadzira zvigadzirwa.

L Ivo vanochengetedza zvese nguva yekugadzira uye nguva yegungano.

L Idzi ndidzo dzimwe nzira dzinovimbika, kwete nekuti dzinodzivirira matambudziko mazhinji, kusanganisira tangles uye kuwina.

Pcb kugadzira maitiro

Iyo huru yekugadzira nzira yeFR4 semi-inoshanduka yakadhindwa redunhu bhodhi ndeinotevera:

Maitiro acho anowanzo kufukidza zvinotevera zvinhu:

L Kucheka kwezvinhu

L Yakaoma firimu kupfeka

L Automated optical kuongorora

L Browning

L laminated

L X-ray kuongororwa

L kuchera

L electroplating

L Girafu kutendeuka

L etching

L Screen yekudhinda

L Kufumura nekusimudzira

L Pamusoro pedza

L Kudzika kudzora kugaya

L Magetsi bvunzo

L Kudzora kwemhando yepamusoro

L kurongedza

Ndeapi matambudziko uye zvinogoneka mhinduro muPBB yekugadzira?

Dambudziko hombe mukugadzira ndere kuona chokwadi uye kudzika kudzora kwekugaya tolerances. Izvo zvakakoshawo kuti uve nechokwadi chekuti hapana mabwe anotsemuka kana mafuta ari kupaza ayo anogona kukonzeresa chero mhando mhando matambudziko. Izvi zvinosanganisira kutarisa zvinotevera panguva yekudzora kudzora:

L ukobvu

L Resin zvemukati

L Kugaya kubvumidza

Kudzika kudzora kwekugaya bvunzo A

Kukora kwekugaya kwakaitwa nemepu nzira yekuenderana nehupamhi hwe0.25 mm, 0.275 mm uye 0.3 mm. Mushure mekunge bhodhi rasunungurwa, richaedzwa kuti rione kana richigona kumira 90 degree kukotama. Kazhinji, kana iyo yakasara ukobvu iri 0.283mm, iyo girazi faibha inoonekwa seyakaremara. Naizvozvo, iyo ukobvu hwendiro, ukobvu hwegirazi faibha uye dielectric mamiriro inofanira kutariswa pakuitisa yakadzika yekugaya.

Kudzika kudzora kwekugaya bvunzo B

Zvichienderana nezvakataurwa pamusoro apa, zvakafanira kuti uone hukobvu hwemhangura hwe0.188mm kusvika 0.213mm pakati peiyo solder barrier layer uye L2. Kuchengetwa kwakakodzera kunodikanwawo kutorwa kune chero kukanganiswa kunogona kuitika, kuchikanganisa kuenzana kwehuremu.

Kudzika kudzora kwekugaya bvunzo C

Kudzika kudzora kukora kwaive kwakakosha kuverengera kuti zviyero zvakaiswa ku6.3 “x10.5” mushure mekunge prototype yepaneru yaburitswa. Mushure meizvi, zviyero zveongororo zvinotorwa kuti zvive nechokwadi chekuti makumi maviri emamirimita akamira uye akatwasuka anochengetwa.

Dzakakosha nzira dzekugadzira dzinoona kuti iyo yakadzika kudzora ukobvu kushivirira iri mukati me ± 20μm.