Ni ubuhe buryo bwihariye bwa PCBA?

Inzira ya PCBA: PCBA =Iteraniro ryinama yumuzunguruko, nukuvuga, ikibaho cyubusa PCB kinyura muri SMT igice cyo hejuru, hanyuma kikanyura muburyo bwose bwa plug-in ya DIP, byitwa inzira ya PCBA.

Inzira n'ikoranabuhanga
Jigsaw winjire:
1.
2. Hagomba kandi gusuzumwa niba bizagira ingaruka ku gucomeka no kumenya niba bizagira ingaruka ku nteko.

Ibikoresho bya PCB:
1. Ikarito PCBs nka XXXP, FR2, na FR3 bigira ingaruka cyane kubushyuhe. Bitewe na coefficient zitandukanye zo kwagura ubushyuhe, biroroshye gutera ibisebe, guhindagurika, kuvunika, no kumena uruhu rwumuringa kuri PCB.
2. Ikirahure cyibirahure PCBs nka G10, G11, FR4, na FR5 usanga bitagerwaho cyane nubushyuhe bwa SMT nubushyuhe bwa COB na THT.
Niba birenze COB. SMT. Ibikorwa bya THT bisabwa kuri PCB imwe, urebye ubuziranenge nigiciro, FR4 irakwiriye kubicuruzwa byinshi.

Ingaruka zinsinga zumurongo wa padi hamwe nu mwanya wanyuze mu mwobo ku musaruro wa SMT:

Gukoresha imirongo ihuza padi hamwe nu mwanya wanyuze mu mwobo bigira uruhare runini ku musaruro w’igurisha rya SMT, kubera ko imirongo ihuza imiyoboro idakwiriye kandi binyuze mu mwobo ishobora kugira uruhare mu “kwiba” ugurisha, kwinjiza ibicuruzwa by’amazi mu ziko ryerekana Go ( siphon na capillary ibikorwa mumazi). Ibikurikira ni byiza kubwiza bw'umusaruro:
1. Kugabanya ubugari bwumurongo uhuza padi:
Niba nta mbogamizi yubushobozi bwo gutwara hamwe nubunini bwa PCB, ubugari ntarengwa bwumurongo wa padi ni 0.4mm cyangwa ubugari bwa 1/2, bushobora kuba buto.
. nk'indege z'ubutaka, indege z'amashanyarazi).
3. Irinde guhuza insinga kuruhande cyangwa inguni muri padi. Byiza cyane, insinga ihuza yinjira hagati yinyuma ya padi.
4. Binyuze mu mwobo bigomba kwirindwa uko bishoboka kwose mumapeti yibice bya SMT cyangwa byegeranye na padi.

Impamvu ni: kunyura mu mwobo muri padi bizakurura uwagurishije mu mwobo kandi bigatuma umugurisha asiga umugurisha hamwe; umwobo wegereye padi, kabone niyo haba harinda amavuta meza yicyatsi (mubikorwa nyabyo, icapiro ryamavuta yicyatsi mubikoresho byinjira muri PCB ntabwo aribyukuri Mubihe byinshi), birashobora kandi gutera ubushyuhe, bizahindura umuvuduko wo kwinjira mubice byabagurisha, bitera ibintu byo gutera imva mubice bya chip, kandi bikabangamira imiterere isanzwe yingingo zagurishijwe mubihe bikomeye.
Ihuza riri hagati yu mwobo na padi nibyiza cyane umurongo uhuza umurongo ufite uburebure buri munsi ya 0.5mm (ubugari butarenze 0.4mm cyangwa ubugari butarenze 1/2 cyubugari bwa padi).