1. Mbere yo gusudira, shyira flux kuri padi hanyuma uyivure hamwe nicyuma kigurisha kugirango wirinde ko padi idacanwa neza cyangwa okiside, bigatera ingorane zo kugurisha. Mubisanzwe, chip ntabwo ikeneye kuvurwa.

2. Koresha tewers kugirango ushire witonze chip ya PQFP kurubaho rwa PCB, witondere kutangiza pin. Uhuze na padi hanyuma urebe neza ko chip yashyizwe muburyo bwiza. Hindura ubushyuhe bwicyuma kigurisha kugeza kuri dogere selisiyusi zirenga 300, shyira hejuru yicyuma cyagurishijwe hamwe nuwagurishije gake, koresha igikoresho cyo gukanda hasi kuri chip ihujwe, hanyuma wongeremo akantu gato ka flux kuri diagonal ebyiri amapine, uracyakanda hasi kuri chip hanyuma ugurisha ibipapuro bibiri bihagaze kuri diagonally kugirango chip ikosorwe kandi ntishobora kugenda. Nyuma yo kugurisha impande zinyuranye, reba umwanya wa chip kugirango uhuze. Nibiba ngombwa, irashobora guhindurwa cyangwa gukurwaho no kongera guhuzwa ku kibaho cya PCB.

3. Mugihe utangiye kugurisha amapine yose, ongeramo uwagurishije hejuru yicyuma cyo kugurisha hanyuma utwikire amapine yose hamwe na flux kugirango amapine agume neza. Kora ku isonga ryicyuma cyo kugurisha kugeza kumpera ya buri pin kuri chip kugeza ubonye uwagurishije atemba. Mugihe cyo gusudira, komeza isonga yicyuma kigurishwa ugereranije na pin igurishwa kugirango wirinde guhuzagurika kubera kugurisha cyane.

4. Nyuma yo kugurisha amapine yose, shyira pin zose hamwe na flux kugirango usukure uwagurishije. Ihanagura kugurisha birenze aho bikenewe kugirango ukureho ikabutura iyo ari yo yose. Hanyuma, koresha tweger kugirango urebe niba hari kugurisha ibinyoma. Igenzura rimaze kurangira, kura flux kurubaho. Shira igikarabiro gikomeye muri alcool hanyuma uhanagure witonze werekeza ku cyerekezo cya pin kugeza igihe flux ibuze.

5. SMD irwanya-capacitor ibice byoroshye kugurisha. Urashobora kubanza gushyira amabati kumugurisha, hanyuma ugashyira impera imwe yibigize, ukoreshe tewers kugirango ugabanye ibice, hanyuma nyuma yo kugurisha impera imwe, reba niba yashyizwe neza; Niba bihujwe, kora urundi ruhande.

Kubijyanye nimiterere, mugihe ubunini bwumuzunguruko ari munini cyane, nubwo gusudira byoroshye kugenzura, imirongo yacapwe izaba ndende, impedance iziyongera, ubushobozi bwo kurwanya urusaku bizagabanuka, kandi ibiciro biziyongera; niba ari nto cyane, ubushyuhe bwo kugabanuka buzagabanuka, gusudira bizagorana kugenzura, kandi imirongo yegeranye izagaragara byoroshye. Kwivanga hagati, nka electromagnetic interineti ivuye ku mbaho ​​zumuzunguruko. Kubwibyo, igishushanyo mbonera cya PCB kigomba kuba cyiza:

(1) Gabanya ihuriro hagati yumurongo mwinshi kandi ugabanye EMI kwivanga.

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. Ibikoresho byubushyuhe bigomba kubikwa kure yubushyuhe.

. Ikibaho cyumuzunguruko cyagenewe kuba urukiramende rwa 4: 3 (birashoboka). Ntugire impinduka zitunguranye mubugari bwinsinga kugirango wirinde guhagarika insinga. Iyo ikibaho cyumuzunguruko gishyushye igihe kirekire, ifu yumuringa iroroshye kwaguka no kugwa. Kubwibyo, kwirinda ahantu hanini h'umuringa hagomba kwirindwa.