Indibano – Izinto zokuwelda kwiipleyiti zingashiya ungcoliseko; Njengentsalela yokuhamba, ke ngoko, umkhondo wobhedu uphantsi konyango lomphezulu ngexesha lenkqubo yokuvelisa, ethi icocwe.

Ezothutho-nokuba zivela kumenzi wesivumelwano (i-CM) kuwe, okanye kumthengi okanye kumthengi, wakho PCB inokuchaphazeleka bubushushu obungazinzanga obuphezulu- obunokubangela ukufuma okanye amaqondo obushushu asezantsi- anokubangela ukuqhekeka kwaye kukhokelele ekonakaleni. Enye indlela yokuzikhusela kwezi zoyikiso kukukhusela ibhodi yesekethe ngokudibanisa okanye ezinye iintlobo zokupakisha.

Ukugcina-Emva kokusebenza, ibhodi yakho iya kuchitha elona xesha lilikhulu kugcino. Ukuba i-CM yakho ayisiyiyo, iinxalenye zinokuba ngabanikezeli beenkonzo zokuvelisa ubuchwephesha phakathi kokuqamba kunye nendibano, kodwa uninzi luya kwenziwa emva kwendibano. Ke ngoko, kubalulekile ukulandela izikhokelo ezifanelekileyo zokugcina i-PCB ukuqinisekisa ukuba iibhodi zakho zikulungele ukusetyenziswa xa sele zilungile.

Kuya kufuneka uyazi malunga nolwazi lokugcina i-PCB

Ukugcinwa okungakhuselekanga kwe-bare (i-PCB) okanye ehlanganisiweyo (i-PCBA) kunokupela intlekele. Kananjalo, ukuba iindleko zokuphinda zenziwe kwakhona, ukuhanjiswa okungafakwanga kunye nokurhoxiswa okunokubakho kuqale ukutya kwinqanaba lakho lokubuya, sisifundo esibalulekileyo sokufunda ukungazi ukuba xa kushiywe kungakhuselekanga, iibhodi zakho zesekethe ziya kuthoba ngokukhawuleza nangokukhawuleza ekuhambeni kwexesha. Ngethamsanqa, kukho amayeza, ukuba ayasetyenziswa, anokuwanciphisa kakhulu amathuba okuphulukana naziphi na iibhodi ngenxa yokuphathwa gwenxa okanye imikhwa emibi yokugcina.

Inyathelo lokuqala kukuqinisekisa ukuba i-CM yakho ilandela ukuphatha kakuhle ibhodi kunye neengcebiso zokugcina; Umzekelo kwi-IPC-1601 yokuphathwa kwebhodi kunye nezikhokelo zokugcina. Ezi zikhokelo zibonelela abavelisi kunye nabahlanganisi ngeendlela kunye nolwazi lokukhusela i-PCBS kwi:

ngco liseko

Ukuncitshiswa kokuncipha

Ukonakala komzimba

Ukufunxa ukufuma

Ukukhutshelwa ngombane (ESD)

Idityaniswe ne-IPC / JEDEC J-STD-033D IPC-1601 ukuphatha, ukupakisha, ukuhambisa kunye nokusetyenziswa kokufuma, ukugcwalisa ukugoba kunye nezixhobo ezichaphazela inkqubo, i-IPC ibonelela ngemigangatho yokupakisha kunye nokugcina ukunciphisa ukubakho kongcoliseko lwebhodi yesekethe ngexesha imveliso. Ukongeza, isikhokelo sokuhambisa kunye nokugcina kunye nokuqonda kokuchaphazeleka kwemveliso kunokusetyenziswa. Ubomi beshelufa ye-PCB edityanisiweyo ihlanganisa iseti yeekhrayitheriya ezibalulekileyo zokugcina i-PCB, njengoko kubonisiwe ngezantsi.

Isikhokelo sokugcina sePCB

Faka isicelo sokugqiba umphezulu ngexesha lokwenziwa

Iibhodi ezimiselweyo zinokufuna ukugcinwa okwethutyana emva kokwenziwa kodwa ngaphambi kwendibano. Ukuthintela igcwala kunye nongcoliseko ngeli xesha, kufuneka kusetyenziswe unyango olufanelekileyo.

Ukuba kunokwenzeka, sebenzisa izinto ezingamanzi

Amacandelo e-SMD angenamanzi anokugcina ubomi ngokungenamda kumaqondo obushushu ≤30 ° C (86 ° F) kunye nokufuma (RH) ≤ 85% ngaphambi kwendibano. Ukuba zipakishwe ngokuchanekileyo, ezi zinto kufuneka zigqithe ngokulula kubomi beshelfini obuchaziweyo beminyaka emi-2 ukuya kweli-10 emva kwendibano. Izinto ezinobuzaza bokufuma, kwelinye icala, zinokuphakanyiswa kobomi beshelfu yosuku olunye ukuya kunyaka omnye wokudibana kwangaphambili. Kwibhodi yesekethe enala macandelo, ulawulo lwezendalo kunye nezikhongozeli zokugcina ziya kuthi zichonge ukusebenza kwayo.

Gcina ibhodi kwingxowa-ubungqina bomswakama (MBB) ene-desiccant

Zonke iibhodi kufuneka zigcinwe kwiingxowa zokuqinisekisa ukufuma ukuthintela ukufuma kungangeni kwiingxowa kunye nokuthintela i-desiccant ekufunxeni ukufuma ngaphakathi. Nangona kunjalo, sukusebenzisa iibhegi ezigcinwe ngaphezulu konyaka.

Umshini etywiniweyo MBB

I-MBB iya komiswa kwaye itywinwe nge-vacuum. Oku kuya kubonelela ngokhuseleko oluchaseneyo.

Ulawulo lwendalo

Unonophelo kufuneka lwenziwe ukuze kuqinisekiswe ukuba akukho kutshintsha kweqondo lobushushu ngexesha lokugcina okanye ukuhambisa, njengoko umahluko wobushushu unokubangela ukuhanjiswa kwamanzi okanye ukujiya. Olona khetho lufanelekileyo kubushushu obulawulwayo be -30 ° C (86 ° F) kunye ne-85% RH.

Ukuhambisa okanye ukusebenzisa iibhodi ezindala kuqala

Ikwangumbono olungileyo ukusoloko uthumela kuqala okanye ukusebenzisa iibhodi ezindala ukwandisa ukuthintela iibhodi zokulibala kunye nokugqitha kubomi beshelfufu.