Kodi akhungu ndi okwiriridwa vias ndi chiyani?
Akhungu vias: Pamene mbali imodzi yokha ya vias ali mu wosanjikiza kunja kwa PCB, amatchedwa vias akhungu.
Anakwiriridwa vias: Pamene mbali zonse za vias m'manda mkati wosanjikiza wa PCB, amatchedwa vias m'manda.
Kodi zida zakhungu ndi zokwiriridwa zimapangidwa bwanji?
Zotsatirazi njira zitatu akhoza kulenga akhungu ndi m'manda vias:
Kubowola kwamakina ndi kuya kosasunthika
Sequential lamination ndi kubowola
Aliyense wosanjikiza lamination ndi kubowola
Kodi akhungu pogwiritsa ntchito njira yopangira ndi chiyani?
Choyamba, tikambirana za laser kubowola akhungu kudzera mabowo. PCB akhungu pogwiritsa ntchito njira yopangira motere:
1) kumaliza zigawo zonse zamkati poyamba;
2) laminate awiri kunja zigawo za prepreg ndi mkuwa pepala pa okonzeka anamaliza zigawo zamkati PCB bolodi;
3) kubowola kukuya koyang'aniridwa akhungu kudzera pa PCB ndi laser.
Chonde dziwani kuti kulondola ndikofunikira kwambiri kwa akhungu kudzera pa pad.
Koma makina kubowola akhungu kudzera mabowo, timatenga 4-wosanjikiza PCBs ndi vias akhungu mu wosanjikiza 1 kuti wosanjikiza 2 mwachitsanzo, ndondomeko motere:
1) kupanga zigawo 1 ndi 2 monga muyezo 2-wosanjikiza PCB, kotero padzakhala kubowola pa zigawo 1 mpaka 2;
2) laminate matabwa awiri pachimake palimodzi kuti titenge 4-wosanjikiza PCB, ndi kubowola plating kudzera mabowo;
3) PCB ikamalizidwa, mumapeza PTH kuchokera ku zigawo 1 mpaka 4 ndi njira zakhungu kuchokera ku zigawo 1 mpaka 2.
Ubwino wogwiritsa ntchito akhungu ndi okwiriridwa ndi chiyani?
Ubwino wogwiritsa ntchito akhungu ndi kukwiriridwa akufotokozedwa pansipa:
Kuchepetsa kukula ndi kulemera kwa PCB
Kuchepetsa chiwerengero cha zigawo
Kuchepetsa mtengo wa kupanga mitundu ingapo ya ma PCB kuyambira kuphatikiza ntchito zambiri
Kupititsa patsogolo kugwirizanitsa kwa electromagnetic
Kuchulukitsa mawonekedwe azinthu zamagetsi
Kupangitsa kuti mapangidwewo azigwira ntchito mosavuta komanso mwachangu
Kodi ndi zovuta zotani zogwiritsira ntchito makina akhungu ndi okwiriridwa?
The miniaturization wa diameters wa akhungu ndi kukwiriridwa vias malo amafuna apamwamba pa PCB kupanga.
Mainjiniya odziwa zambiri amafunikira kuti apange ma PCB akhungu ndi okwiriridwa.
Ndizovuta kwambiri kusonkhanitsa ma PCB akhungu ndi okwiriridwa kudzera pa PCB popeza nthawi zonse amakhala ndi mapepala ang'onoang'ono, monga BGA pads.
Kodi mawonekedwe akhungu owoneka bwino ndi chiyani?
Mu laser kubowola akhungu vias board, wakhungu wamba kudzera mbali chiŵerengero ndi 1: 1.
Kukwiriridwa kudzera chiyani?
Kukwiriridwa vias mu PCB ndi kudzera mabowo pakati pa zigawo zamkati. Timatenga 6 wosanjikiza akhungu / m'manda kudzera bolodi dera Mwachitsanzo: vias akhungu akhoza kudzera mabowo kuchokera wosanjikiza 2-3, 2-4, 2-5, 3-4, 3-5 ndi 4-5.
Kukwiriridwa kudzera vs akhungu kudzera
Akhungu kudzera ndi kukwiriridwa kudzera amagwiritsidwa ntchito kwambiri ma PCB a HDI, amakhalapo nthawi zonse m'mabokosi apamwamba aukadaulo apamwamba kwambiri nthawi yomweyo. Koma iwo ali kotheratu mitundu ya vias.