Sinthani mapangidwe anu a PCB: sankhani kumaliza kwabwino kwa bolodi lanu la magawo 12

Mubulogu iyi, tikambirana zamankhwala otchuka apamtunda ndi maubwino ake okuthandizani kukweza njira yanu yopangira PCB yokhala ndi magawo 12.

Pamagawo amagetsi, ma board osindikizidwa (PCBs) amagwira ntchito yofunika kwambiri pakulumikiza ndi kupatsa mphamvu zida zosiyanasiyana zamagetsi. Pamene ukadaulo ukupita patsogolo, kufunikira kwa ma PCB apamwamba kwambiri komanso ovuta kumawonjezeka kwambiri. Chifukwa chake, kupanga kwa PCB kwakhala gawo lofunikira popanga zida zamagetsi zapamwamba kwambiri.

Mbali yofunika kuiganizira pakupanga PCB ndikukonzekera pamwamba.Chithandizo chapamwamba chimatanthawuza zokutira kapena kumaliza komwe kumayikidwa pa PCB kuti itetezedwe kuzinthu zachilengedwe ndikuwongolera magwiridwe antchito ake. Pali njira zingapo zochizira pamwamba zomwe zilipo, ndipo kusankha chithandizo choyenera cha bolodi lanu la magawo 12 kumatha kukhudza kwambiri magwiridwe ake komanso kudalirika kwake.

1.HASL (kutentha kwa solder):
HASL ndi njira yogwiritsidwa ntchito kwambiri padziko lapansi yomwe imaphatikizapo kuviika PCB mu solder yosungunuka ndikugwiritsa ntchito mpeni wotentha kuti muchotse solder yowonjezereka. Njirayi imapereka njira yotsika mtengo yokhala ndi solderability yabwino kwambiri. Komabe, ili ndi malire. Chogulitsiracho sichikhoza kugawidwa mofanana pamtunda, zomwe zimapangitsa kuti pakhale kusiyana kosiyana. Kuonjezera apo, kutentha kwakukulu panthawiyi kungayambitse kupsinjika kwa kutentha pa PCB, zomwe zimakhudza kudalirika kwake.

2. ENIG (golide wopanda nickel womiza):
ENIG ndi chisankho chodziwika bwino chamankhwala apamwamba chifukwa cha kuwotcherera kwake komanso kusalala. Munjira ya ENIG, faifi yopyapyala imayikidwa pamtunda wamkuwa, ndikutsatiridwa ndi golide wocheperako. Chithandizochi chimatsimikizira kukana kwa okosijeni bwino ndikuletsa kuwonongeka kwa mkuwa. Kuonjezera apo, kugawidwa kwa yunifolomu kwa golidi pamtunda kumapereka malo ophwanyika komanso osalala, omwe amawapangitsa kukhala oyenerera pazigawo zomveka bwino. Komabe, ENIG siyovomerezedwa kuti igwiritsidwe ntchito pafupipafupi chifukwa cha kutayika kwa ma siginecha komwe kumachitika chifukwa chakusanjikiza kwa nickel.

3. OSP (organic solderability preservative):
OSP ndi njira yochizira pamwamba yomwe imaphatikizapo kugwiritsa ntchito wosanjikiza wochepa kwambiri wa organic pamwamba pa mkuwa kudzera munjira ya mankhwala. OSP imapereka njira yotsika mtengo komanso yogwirizana ndi chilengedwe chifukwa sichifuna zitsulo zolemera. Amapereka malo athyathyathya komanso osalala omwe amaonetsetsa kuti ali ndi solderability. Komabe, zokutira za OSP zimakhudzidwa ndi chinyezi ndipo zimafunikira malo oyenera osungira kuti asunge kukhulupirika kwawo. Ma board othandizidwa ndi OSP nawonso amatha kukwapula komanso kuwononga kuwonongeka kuposa njira zina zapamtunda.

4. Siliva womiza:
Siliva womiza, womwe umadziwikanso kuti siliva womiza, ndi chisankho chodziwika bwino cha ma PCB othamanga kwambiri chifukwa chamayendedwe ake abwino komanso kutayika kotsika. Amapereka malo athyathyathya, osalala kuonetsetsa kuti solderability yodalirika. Siliva womiza ndi wopindulitsa makamaka kwa ma PCB okhala ndi zigawo zomveka bwino komanso ntchito zothamanga kwambiri. Komabe, malo asiliva amatha kuwononga m'malo achinyezi ndipo amafunikira kugwiridwa bwino ndi kusungidwa kuti asunge umphumphu.

5. Kuyika golide wolimba:
Kuyika golide wolimba kumaphatikizapo kuyika golide wosanjikiza pamwamba pa mkuwa kudzera mu njira yopangira electroplating. Kuchiza kwapamwamba kumeneku kumapangitsa kuti magetsi azikhala bwino komanso kukana dzimbiri, ndikupangitsa kuti ikhale yoyenera kugwiritsa ntchito zomwe zimafuna kuyikapo ndikuchotsa zigawo. Kuyika golide wolimba kumagwiritsidwa ntchito kwambiri pazolumikizira m'mphepete ndi ma switch. Komabe, mtengo wa mankhwalawa ndi wokwera kwambiri poyerekeza ndi mankhwala ena apamtunda.

Powombetsa mkota, kusankha bwino pamwamba pa 12-wosanjikiza PCB n'kofunika kuti magwiridwe ake ndi kudalirika.Njira iliyonse yochizira pamwamba ili ndi zabwino zake ndi zofooka zake, ndipo kusankha kumatengera zomwe mukufuna komanso bajeti. Kaya mumasankha malata opopera otsika mtengo, golide womiza odalirika, OSP wokonda zachilengedwe, siliva womiza wothamanga kwambiri, kapena plating yagolide yolimba, kumvetsetsa zabwino ndi malingaliro pamankhwala aliwonse kudzakuthandizani kukweza PCB yanu yopanga ndikuonetsetsa kuti mukupambana. zida zanu zamagetsi.