Ubuyobozi bw'umuzunguruko buzerekana amaringa mabi mugihe cy'umusaruro wa SMT. Mubisanzwe, tinning mbi ifitanye isano nisuku yubuso bwa pcb. Niba nta mwanda uhari, hazabaho ahanini ntabwo ari tinning mbi. Icya kabiri, tinning mugihe flux ubwayo ari mbi, ubushyuhe nibindi. None ni ubuhe buryo nyamukuru bwo kwerekana ibisanzwe amashanyarazi asanzwe mu buryo bwo gutanga ibicuruzwa by'umuzunguruko no gutunganya? Nigute wakemura iki kibazo nyuma yo kubigaragaza?
1. Amabati yubutaka cyangwa ibice ni okiside hamwe nubuso bwumuringa butuje.
2. Hano hari flake hejuru yinama yumuzunguruko idafite amabati, kandi urwego rwo kwiyegurira hejuru yubutaka rufite umwanda.
3. Gushyira hejuru-ibishobora gukomera, hariho ibintu byaka, kandi hari flake hejuru yubuyobozi idafite amabati nta tumwe.
4. Ubuso bwikibaho cyumuzunguruko bujyanye namavuta, umwanda nibindi, cyangwa hari amavuta ya silicone.
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6. Guhimba kuruhande rumwe birarangiye, kandi gupfukirana kurundi ruhande ni abakene, kandi hariho inkombe nziza kuruhande rwumwobo muto.
7. Ikibaho cya PCB ntabwo cyemewe kubahiriza ubushyuhe cyangwa igihe mugihe cyo kugurisha, cyangwa flux ntabwo ikoreshwa neza.
8. Hano hari intera [hari intera iringaniza mugice cyinama yumuzunguruko, cyangwa gusya ibice bisigaye hejuru yumuzenguruko mugihe cyumusaruro wa substrate.
9. Agace kanini k'ubushobozi buke ntibushobora gusobwa hamwe namabati, kandi hejuru yikibaho cyumuzunguruko gifite ibara ryumutuku cyangwa umutuku, hamwe no guhinga byuzuye kuruhande rumwe hamwe nintoki mbi kurundi ruhande.