Uyilo lwesixhobo sePCB asiyonto ingenasizathu, inemithetho ethile ekufuneka ilandelwe ngumntu wonke.Ukongeza kwiimfuno eziqhelekileyo, ezinye izixhobo ezizodwa nazo zineemfuno ezahlukeneyo zokubeka.

Iimfuno zokubeka izixhobo zokukhuhla

1) Kufuneka kungabikho zixhobo ezingaphezulu kwe-3mm 3mm malunga ne-curved / indoda, i-curved / female crimping umphezulu wesixhobo, kwaye kufuneka kungabikho izixhobo ze-welding malunga ne-1.5mm;umgama ukusuka kwicala elichasene nesixhobo sokukrazula ukuya kwiziko lomngxuma we-pin yesixhobo se-crimping yi-2.5 Akuyi kubakho amacandelo ngaphakathi koluhlu lwe-mm.

2) Kufuneka kungabikho amacandelo ngaphakathi kwe-1mm malunga nesixhobo esithe ngqo / sendoda, esithe ngqo / sowesifazane;xa umva wesixhobo esithe ngqo/senkunzi, esithe ngqo/sesifazana kufuneka sifakelwe isingxobo, akukho malungu aya kubekwa ngaphakathi kwe-1mm ukusuka kumphetho wesingxobo Xa isingxobo singafakwanga, akukho zixhobo ziya kubekwa ngaphakathi kwe-2.5mm. ukusuka kumngxunya wecrimping.

I-3) Isokhethi ephilayo yeplagi ye-grounding connector esetyenziswe kunye ne-European-style connector, isiphelo sangaphambili senaliti ende yi-6.5mm yengubo engavumelekanga, kunye nenaliti emfutshane yi-2.0mm yengubo engavumelekanga.

4) I-pin ende ye-2mmFB yonikezelo lwamandla i-PIN ye-pin enye ihambelana ne-8mm yelaphu engavumelekanga ngaphambili kwisokethi yebhodi enye.

Iimfuno zokubeka izixhobo ezishushu

I-1) Ngexesha lokwakhiwa kwesixhobo, gcina izixhobo ezithintekayo ze-thermal (ezifana ne-electrolytic capacitors, i-crystal oscillators, njl.) kude nezixhobo zokushisa okuphezulu ngokusemandleni.

2) Isixhobo se-thermal kufuneka sisondele kwicandelo eliphantsi kovavanyo kwaye singabikho kwindawo ephezulu yokushisa, ukuze singachatshazelwa ngamanye amacandelo okufudumeza okulinganayo kwaye kubangele ukungasebenzi.

3) Beka izinto ezivelisa ubushushu kunye nokumelana nobushushu kufuphi nendawo yokuphuma komoya okanye phezulu, kodwa ukuba azikwazi ukumelana namaqondo okushisa aphezulu, kufuneka zibekwe kufuphi nendawo yokungena emoyeni, kwaye ubeke ingqalelo ekukhuphukeni emoyeni kunye nokunye ukufudumeza. izixhobo kunye nezixhobo ubushushu-ubuthathaka kangangoko kunokwenzeka Stagger isikhundla kwicala.

Iimfuno zokubeka kunye nezixhobo ze-polar

I-1) Izixhobo ze-THD ezine-polarity okanye i-directionality zinolwalathiso olufanayo kwi-layout kwaye zicwangciswe kakuhle.
2) Umyalelo we-SMC edibeneyo kwibhodi kufuneka ungqinelane kangangoko kunokwenzeka;izixhobo zohlobo olufanayo zicwangciswe ngokufanelekileyo nangobuhle.

(Iinxalenye ezine-polarity ziquka: i-electrolytic capacitors, tantalum capacitors, diodes, njl.)

Iimfuno zoyilo zezixhobo zokuphinda zifakwe emngxunyeni

I-1) Kwii-PCB ezinecala elingadluliseli imilinganiselo engaphezu kwe-300mm, amacandelo anzima akufuneki abekwe embindini we-PCB kangangoko kunokwenzeka ukunciphisa impembelelo yobunzima besixhobo seplagi kwi-deformation ye-PCB ngexesha. inkqubo ye-soldering, kunye nefuthe lenkqubo ye-plug-in ebhodini.Impembelelo yesixhobo esibekiweyo.

2) Ukuze kube lula ukufakwa, isixhobo sicetyiswa ukuba silungiselelwe kufuphi necala lokusebenza lokufakwa.

I-3) Ulwalathiso olude lwezixhobo ezide (ezifana neziseko zememori, njl.) Kunconywa ukuba zihambelane nesikhokelo sothumelo.

I-4) Umgama phakathi komda we-pad yesixhobo sokuthengisa i-pad-hole reflow kunye ne-QFP, i-SOP, ikhonkco kunye nazo zonke ii-BGA ezine-pitch ≤ 0.65mm inkulu kune-20mm.Umgama osuka kwezinye izixhobo ze-SMT ngu> 2mm.

I-5) Umgama phakathi komzimba wesixhobo sokuthengisa sokuphinda-phinda umngxuma ungaphezulu kwe-10mm.

6) Umgama phakathi komphetho wephedi wesixhobo sokuthengisa sokuphinda-phinda umngxuma kunye necala lokuhambisa ngu ≥10mm;umgama ukusuka kwicala elingathumeliyo ngu ≥5mm.