SMT gaosiga meafaigaluega e atoatoa otometi, maualuga maualuga, maualuga saosaoa, maualuga lelei ma isi. PCB mamanu tatau ona faʻamalieina manaʻoga o SMT masini. O le manaʻoga manaʻoga o SMT gaosiga mea faigaluega aofia ai: PCB foliga, lapoʻa, faʻatulagaina pu ma clamping pito, faʻasino Mareko, potopoto laupapa, filifiliga o vaega vaega afifiina ma afifi pepa, PCB mamanu galuega faatino faila, ma isi

Pe a fuafuaina PCB, o le foliga o PCB tatau ona iloiloina muamua. When o le tele o le PCB e lapoʻa tele, o le lolomiga laina e umi, o le faʻafetaui faateleina, o le tetee-leo gafatia faʻaititia, ma le tau faʻateleina. Laʻititi, o le vevela dissipation e le lelei, ma laina vavalalata e faigofie ona faʻalavelave. I le taimi lava e tasi, o le saʻo ma le faʻapitoa o le PCB foliga foliga faʻatatau saʻo lava i le gaosia ma le tamaoaiga o le gaosiga ma le faʻagaioiga. O le autu mataupu o PCB foliga mamanu e faapea.

(1) Umi-lautele lautele fua fuafua

Lolomi laupapa foliga e tatau ona faigofie pei ona mafai ai, masani faʻatafafā, umi i le lautele fuataga o le 3: 2 poʻo le 4: 3, o lona tele e tatau ona latalata i le tulaga masani faʻasologa lapoʻa, ina ia faʻafaigofieina gaioiga ou ata, faʻaititia tau faʻagaioiga. O le laualuga o le laupapa e le tatau ona fuafuaina tele tele, ina ia le mafua ai deformation pe a toe faʻaopoopoina maopoopo. O le tele ma le mafiafia o le laupapa e tatau ona tutusa, manifinifi PCB, o le laupapa lapoa e le tatau ona sili atu tele.

O a manaʻoga o le PCB design mo SMT gaosiga mea faigaluega

(2) foliga PCB

PCB foliga ma le tele e fuafuaina e le PCB faʻasalalauga auala ma faʻatulagaina tele o le faʻapipiʻi masini.

① A O le PCB ua tu i luga o le faʻapipiʻiina o faʻamaumauga ma faʻamatuʻu atu i le falefaigaluega, e leai se faʻapitoa manaʻomia mo le foliga mai o le PCB.

② When the PCB is directly transmitted by rail, the PCB shape must be straight. Afai o se PCB profiled, o le gaioiga pito tatau ona fuafuaina ina ia i fafo atu o le PCB fausiaina se laina saʻo, pei ona faʻaalia i le Ata 5-80.

‘Ata 5-81 faʻaalia PCB faʻataʻamilo tulimanu poʻo le 45. Chamfering ata. I le PCB foliga mamanu, e sili ona lelei le faʻagaioia o le PCB i faʻataʻamilo tulimanu poʻo le 45. Chamfer e puipuia ai le faʻamaai o le Angle i le fusi faʻalaʻau PCB (fusipaʻu).

(3) PCB lapoʻa mamanu

Tele PCB ua fuafuaina e mounting tele. Pe a fuafuaina PCB, e tatau ona mafaufau i le maualuga ma le maualalo faʻaputuina tele o le faʻapipiʻi masini. Tele lapoʻa PCB = tele mounting tele o le faʻapipiʻi masini; Laʻititi PCB tele = maualalo faʻapipiʻi tele o faʻapipiʻi masini. O le vaega o faʻapipiʻi mo eseese ituaiga o masini faʻapipiʻi e ese. When the PCB size is smaller than the minimum mounting size, the board must be used.

(4) PCB mafiafia tisaini

E masani lava, o le ipu mafiafia faʻatagaina e le faʻapipiʻiina masini o 0.5 ~ Smm. O le mafiafia o PCB e masani lava i le lautele o le 0.5-2mm.

① Na o le tuʻufaʻatasia o tuʻufaʻatasia o laina fesoʻotaʻiga, maualalo le paoa transistors, resistors, capacitors ma isi vaega maualalo-paoa, i le leai o se malosi avega gatete tulaga, o le tele o le PCB totonu 500mmx500mm, o le faʻaaogaina o le mafiafia o 1.6mm.

② Lalo o le tulaga o le vevesi o le avega, o le tele o le ipu e mafai ona faʻaititia pe o le lagolago tulaga mafai ona faʻamalosia pe faʻateleina, ma le mafiafia o le 1.6mm mafai ona faʻaaogaina.

‘Afai e lapoʻa le laupepa pe le mafai ona lagolago, e tatau ona filifilia le 2-3mm mafiafia ipu.