Kayan aikin samar da SMT cikakke ne ta atomatik, babban madaidaici, babban gudu, babban inganci da sauransu. PCB zane dole ne ya cika buƙatun kayan aikin SMT. Buƙatun ƙira na kayan aikin samar da SMT sun haɗa da: siffar PCB, girman, rami mai sakawa da gefen ƙulli, Alamar Mark, taron tattarawa, zaɓin fakitin kayan aiki da fom ɗin fakiti, fayil ɗin ƙirar ƙirar PCB, da dai sauransu.

Lokacin zayyana PCB, yakamata a yi la’akari da siffar PCB. When girman PCB yayi yawa, layin da aka buga yana da tsawo, rashin ƙarfi yana ƙaruwa, ikon hana amo yana raguwa, kuma farashin yana ƙaruwa. Ƙaramin ƙanƙara, watsewar zafi ba shi da kyau, kuma layukan da ke kusa suna da saukin kutse. A lokaci guda, daidaituwa da ƙayyadaddun girman siffar PCB kai tsaye yana shafar ƙira da tattalin arziƙin samarwa da sarrafawa. Babban abun ciki na ƙirar ƙirar PCB kamar haka.

(1) Tsarin rabo mai nisa

Siffar allon da aka buga yakamata ya zama mai sauƙi kamar yadda zai yiwu, gabaɗaya murabba’i, tsayinsa zuwa faɗin faɗin 3: 2 ko 4: 3, girmansa yakamata ya kasance kusa da daidaitaccen jerin jerin, don sauƙaƙe aikin I fasaha, rage farashin sarrafawa. Ba za a yi ƙirar saman allo da yawa ba, don kada ya haifar da nakasa lokacin sake walda. Girman da kaurin jirgi ya dace, PCB na bakin ciki, girman hukumar kada yayi yawa.

Menene buƙatun ƙirar PCB don kayan aikin samar da SMT

(2) siffar PCB

An ƙaddara siffar PCB da girman ta hanyar yanayin watsawa na PCB da kewayon mashin ɗin hawa.

① Lokacin da aka sanya PCB a kan kayan aikin hawa kuma aka canza shi ta wurin aikin aiki, babu wani buƙatu na musamman don bayyanar PCB.

② Lokacin da PCB ke watsa kai tsaye ta hanyar dogo, dole ne siffar PCB ta kasance madaidaiciya. Idan PCB ne wanda aka ba da sanarwar, dole ne a tsara gefen aiwatarwa don haka waje na PCB ya zama madaidaiciya, kamar yadda aka nuna a cikin Hoto 5-80.

Hoto 5-81 yana nuna kusurwoyin PCB ko 45. Tsarin zane. A cikin ƙirar ƙirar PCB, yana da kyau a sarrafa PCB zuwa kusurwoyi masu zagaye ko 45. Chamfer don hana lalacewar kusurwar kaifi ga bel ɗin jigilar mai PCB (bel ɗin fiber).

(3) ƙirar girman PCB

An ƙaddara girman PCB ta kewayon hawa. Lokacin zayyana PCB, ya zama dole a yi la’akari da matsakaicin da mafi girman girman abin hawa. Matsakaicin girman PCB = matsakaicin girman girman injin hawa; Mafi ƙarancin girman PCB = ƙaramin girman girman injin hawa. Yankin hawa don nau’ikan injunan hawa daban daban. Lokacin da girman PCB ya yi ƙasa da mafi girman girman hawa, dole ne a yi amfani da allon.

(4) PCB kauri zane

Gabaɗaya, kaurin farantin da injin hawa ya yarda shine 0.5 ~ Smm. Kauri na PCB gabaɗaya yana cikin kewayon 0.5-2mm.

① Kawai haɗa haɗe-haɗe madaidaiciya, ƙananan transistors, resistors, capacitors da sauran abubuwan da ba su da ƙarfi, idan babu yanayin girgiza mai ƙarfi, girman PCB tsakanin 500mmx500mm, amfani da kaurin 1.6mm.

② A ƙarƙashin yanayin girgiza kayan aiki, ana iya rage girman farantin ko za a iya ƙarfafawa ko ƙaruwa, kuma har yanzu ana iya amfani da kaurin 1.6mm.

③ Lokacin da farantin farantin ya fi girma ko ba zai iya tallafawa ba, yakamata a zaɓi farantin mai kauri 2-3mm.