Kodi chip chimagulitsidwa bwanji pa board board?

Chip ndi chomwe timachitcha IC, chomwe chimapangidwa ndi gwero la kristalo ndi ma CD akunja, ang'onoang'ono ngati transistor, ndipo kompyuta yathu ya CPU ndi yomwe timatcha IC.Nthawi zambiri, imayikidwa pa PCB kudzera m'mapini (ndiko kuti, Gulu lozungulira lomwe mwatchula), lomwe lagawidwa m'maphukusi osiyanasiyana, kuphatikiza pulagi yolunjika ndi chigamba.Palinso amene sanaikidwe mwachindunji pa PCB, monga wathu kompyuta CPU.Kuti zitheke m'malo mwake, zimakhazikikapo pogwiritsa ntchito zitsulo kapena zikhomo.Bampu yakuda, monga muwotchi yamagetsi, imasindikizidwa mwachindunji pa PCB.Mwachitsanzo, ena hobbyists pakompyuta alibe yabwino PCB, kotero n'zothekanso kumanga okhetsedwa mwachindunji pini flying waya.

Chipcho chiyenera "kuyikidwa" pa bolodi la dera, kapena "soldering" kuti ikhale yolondola.Chip chiyenera kugulitsidwa pa bolodi la dera, ndipo bolodi la dera limakhazikitsa kugwirizana kwa magetsi pakati pa chip ndi chip kudzera mu "trace".Bwalo lozungulira ndilo chonyamulira cha zigawozo, zomwe sizimangokonza chip komanso zimatsimikizira kugwirizana kwa magetsi ndikuonetsetsa kuti chip chikugwira ntchito mokhazikika.

chip pin

Chip chili ndi mapini ambiri, ndipo chip chimakhazikitsanso ubale wolumikizana ndi magetsi ndi tchipisi zina, zida, ndi mabwalo kudzera pazikhomo.Chip chikakhala ndi ntchito zambiri, zimakhalanso ndi mapini ambiri.Malinga ndi mitundu yosiyanasiyana ya pinout, imatha kugawidwa mu phukusi la LQFP, phukusi la QFN, phukusi la SOP, phukusi la BGA ndi phukusi la DIP pamzere.Monga momwe zilili pansipa.

Chithunzi cha PCB

matabwa wamba dera zambiri wobiriwira wopaka mafuta, otchedwa PCB matabwa.Kuwonjezera wobiriwira, mitundu ambiri ntchito ndi buluu, wakuda, wofiira, etc. Pali ziyangoyango, kuda, ndi vias pa PCB.Kukonzekera kwa mapepala kumagwirizana ndi kuyika kwa chip, ndipo tchipisi ndi mapepala amatha kugulitsidwa mofanana ndi soldering;pamene kuda ndi vias amapereka mgwirizano kugwirizana magetsi.Gulu la PCB likuwonetsedwa pachithunzi pansipa.

matabwa PCB akhoza kugawidwa mu matabwa awiri wosanjikiza, matabwa anayi wosanjikiza, matabwa asanu wosanjikiza, ndi zigawo zambiri malinga ndi chiwerengero cha zigawo.The ambiri ntchito matabwa PCB zambiri FR-4 zipangizo, ndi makulidwe wamba ndi 0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm, etc. Ichi ndi cholimba dera bolodi, ndi zina. ndi yofewa, yotchedwa flexible circuit board.Mwachitsanzo, zingwe zosinthika monga mafoni am'manja ndi makompyuta ndi ma board osinthasintha.

zida zowotcherera

Kugulitsa chip, chida cha soldering chimagwiritsidwa ntchito.Ngati ndi soldering pamanja, muyenera kugwiritsa ntchito chitsulo soldering electric, solder waya, flux ndi zida zina.Kuwotcherera pamanja ndi oyenera zitsanzo zochepa, koma sizoyenera kuwotcherera misa, chifukwa cha kuchepa kwachangu, kusasinthika kosasinthika, komanso mavuto osiyanasiyana monga kuwotcherera ndi kusowa kwa kuwotcherera zabodza.Tsopano kuchuluka kwa makina akuchulukirachulukira, ndipo kuwotcherera kwa chipangizo cha SMT ndi njira yamakampani okhwima kwambiri.Izi ziphatikiza makina otsuka, makina oyika, ma uvuni otenthetsera, kuyezetsa kwa AOI ndi zida zina, ndipo kuchuluka kwa automation ndikokwera kwambiri., Kusasinthasintha ndikwabwino kwambiri, ndipo zolakwikazo ndizochepa kwambiri, zomwe zimatsimikizira kutumiza kwakukulu kwa zinthu zamagetsi.SMT ikhoza kunenedwa kuti ndi makampani opanga zamagetsi zamagetsi.

Njira yoyambira ya SMT

SMT ndi ntchito yokhazikika m'mafakitale, yomwe imakhudza PCB ndi kuyang'anira ndi kutsimikizira kwazinthu zomwe zikubwera, kuyika makina oyika, phala la solder/red glue, kuika makina oyika, uvuni wa reflow, kuyendera kwa AOI, kuyeretsa ndi zina.Palibe zolakwika zomwe zingapangidwe mu ulalo uliwonse.Ulalo wowunika wazinthu zomwe ukubwera umatsimikizira kulondola kwa zida.Makina oyika ayenera kukonzedwa kuti adziwe malo ndi momwe gawo lililonse lilili.Phala la solder limagwiritsidwa ntchito pa mapepala a PCB kupyolera muzitsulo zachitsulo.Kutenthetsa ndi kusungunula phala la solder, ndipo AOI ndi ntchito yoyendera.

Chipcho chiyenera kugulitsidwa pa bolodi la dera, ndipo bolodi la dera silingangogwira ntchito yokonza chip, komanso kuonetsetsa kuti magetsi akugwirizana ndi tchipisi.


Nthawi yotumiza: May-09-2022