1. Cabbirka PCB
[Sharaxaad ka dib] Baaxadda PCB-ga waxaa xaddiday awoodda qalabka wax-soo-saarka elegtarooniga ah. Sidaa darteed, cabbirka PCB ee ku habboon waa in la tixgeliyaa marka la naqshadeynayo nidaamka nidaamka alaabta.
(1) Cabbirka PCB ee ugu badan ee lagu rakibi karo qalabka SMT wuxuu ka yimaadaa cabbirka caadiga ah ee agabka PCB, kuwaas oo badankoodu yihiin 20″ × 24″, taas oo ah, 508mm × 610mm (ballaadhka tareenka)
(2) Cabbirka lagu taliyey waa cabbirka u dhigma qalabka khadka wax soo saarka ee SMT, kaas oo ku habboon wax-soo-saarka qalab kasta oo meesha ka saaraya cilladaha qalabka.
(3) Cabbirka yar ee PCB waa in loo qaabeeyaa sidii lagu soo rogi lahaa si kor loogu qaado waxtarka wax soo saarka ee dhammaan khadka wax soo saarka.

Shuruudaha naqshadeynta】
(1) Guud ahaan, cabbirka ugu badan ee PCB waa in lagu xaddidaa inta u dhexeysa 460mm × 610mm.
(2) Qiyaasta cabbirka lagu taliyey waa (200 ~ 250) mm × (250 ~ 350) mm, saamiga dhinacuna waa inuu noqdaa "2.
(3) Cabbirka PCB-ga “125mm×125mm, PCB-ga waa in loo dejiyaa cabbir ku habboon.

2, qaabka PCB
[Sharaxaad ka dib] Qalabka wax-soo-saarka SMT waxay adeegsadaan biraha hagaha si ay u gudbiyaan PCB-yada, mana wareejin karaan PCB-yada qaabaysan, gaar ahaan PCB-yada daldaloolada ah ee geesaha.

Shuruudaha naqshadeynta】
(1) Qaabka PCB-gu waa inuu ahaadaa afargees caadi ah oo geeso wareegsan leh.
(2) Si loo hubiyo xasilloonida habka gudbinta, qaabka aan caadiga ahayn ee PCB waa in loo tixgeliyaa in loo beddelo labajibbaaran jaangooyo iyada oo la adeegsanayo dhejinta, gaar ahaan meelaha geesaha waa in la buuxiyaa si looga fogaado habka gudbinta mawjada alxanka daaman Kaadhka.
(3) Looxyada SMT ee saafiga ah, nusqaamaha waa la oggol yahay, laakiin cabbirka farqiga waa inuu ka yar yahay saddex-meelood meel dhererka dhinaca uu ku yaal. Haddii ay ka badan tahay shuruudahan, dhinaca habka naqshadeynta waa in la buuxiyaa.
(4) Marka lagu daro naqshadaynta naqshadaynta dhinaca gelinta, naqshadaynta farta dahabiga ah waa in sidoo kale lagu qaabeeyaa (1 ~ 1.5) × 45 ° labadaba labada dhinac ee guddiga si loo fududeeyo gelinta.

3. Dhinaca gudbinta
[Sharaxaad ka dib] Baaxadda dhinaca gudbintu waxay ku xidhan tahay shuruudaha hagaha gudbinta ee qalabka. Mashiinnada daabacaadda, mashiinnada meelaynta iyo foornooyinka wax lagu iibiyo ee dib u qulqulaya guud ahaan waxay u baahan yihiin in dhinaca gudbintu ka sarreeyo 3.5mm.

Shuruudaha naqshadeynta】
(1) Si loo yareeyo qallafsanaanta PCB inta lagu jiro alxanka, jihada dhinaca dheer ee PCB aan la soo rogin ayaa guud ahaan loo isticmaalaa jihada gudbinta; PCB-ga la soo rogo, jihada dhinaca dheer waa in sidoo kale loo adeegsadaa jihada gudbinta.
(2) Guud ahaan, labada dhinac ee PCB-ga ama jihada gudbinta ee soo-saarka ayaa loo isticmaalaa dhinaca gudbinta. Ballaca ugu yar ee dhinaca gudbinta waa 5.0mm. Waa inaysan jirin qaybo ama kala-goysyada alxanka ee xagga hore iyo dambe ee dhinaca gudbinta.
(3) Dhinac aan gudbin, ma jirto wax xaddidaad ah oo ku saabsan qalabka SMT, way fiicantahay in la dhigo 2.5mm qayb ka mamnuuc ah.

4, dalool meelaynta
[Sharaxaad ka dib] Nidaamyo badan sida habaynta, isu-ururinta, iyo tijaabinta waxay u baahan yihiin meelaynta saxda ah ee PCB-ga. Sidaa darteed, guud ahaan waxaa loo baahan yahay in la naqshadeeyo godadka meelaynta.

Shuruudaha naqshadeynta】
(1) PCB kasta, ugu yaraan laba godad meelaynta waa in loo qaabeeyaa, mid waa wareeg ah, kan kalena waa qaab jeexdin dheer, kii hore waxaa loo isticmaalaa meelaynta kan dambena waxaa loo isticmaalaa hagitaan.
Ma jirto shuruud gaar ah oo loogu talagalay daloollada meelaynta, waxaa loo qaabayn karaa iyadoo loo eegayo qeexida warshadaada, dhexroorka lagu taliyayna waa 2.4mm iyo 3.0mm.
Godadka meelaynta waa inay ahaadaan godad aan bir lahayn. Haddii PCB-gu yahay PCB la feeray, godka meelaynta waa in lagu qaabeeyaa saxan dalool si loo xoojiyo adkaynta.
Dhererka daloolka hagaha guud ahaan waa 2 jeer dhexroorka.
Bartamaha godka meeleynta waa in uu ka fogaadaa 5.0mm cidhifka gudbinta, labada daloolna waa in ay fogaadaan intii suurtagal ah. Waxaa lagu talinayaa in lagu habeeyo koonaha ka soo horjeeda ee PCB-ga.
(2) PCB-ga isku dhafan (PCBA-da oo lagu rakibay, meesha daloolku ku yaal waa inay isku mid ahaadaan, si naqshadda aaladda loo wadaago inta u dhaxaysa hore iyo dambe). loo isticmaalo saxaaradda fur-in.

5. Astaanta meelaynta
[Sharaxaad ka dib] Mashiinnada meelaynta casriga ah, mashiinada daabacaadda, qalabka kormeerka indhaha (AOI), alxanka koollada baadhista qalabka (SPI), iwm dhammaan waxay isticmaalaan hababka meelaynta indhaha. Sidaa darteed, calaamadaha meelaynta indhaha waa in lagu qaabeeyaa PCB-ga.

Shuruudaha naqshadeynta】
(1) Calaamadaha meelaynta waxa loo qaybiyaa calaamado meelayn caalami ah (Global Fiducial) iyo calaamadaha meelaynta maxaliga ah (Local Fiducial). Midka hore waxaa loo isticmaalaa meelaynta looxa oo dhan, kan dambena waxaa loo isticmaalaa meelaynta loox-hoosaadyada ama qaybaha ganaaxa.
(2) Astaanta meelaynta indhaha waxa loo qaabayn karaa labajibbaaran, goobaabin dheeman u samaysan, iskutallaabta, tic-tac-suul, iwm, dhererkuna waa 2.0mm. Guud ahaan, waxaa lagu talinayaa in la naqshadeeyo qaab qeexid naxaas ah oo wareegsan Ø1.0m. Iyadoo la tixgelinayo farqiga u dhexeeya midabka maadada iyo deegaanka, ka tag aag aan iib ahayn oo 1mm ka weyn calaamadda meelaynta indhaha. Ma jiro jilayaal gudaha loo oggol yahay Saddex ku yaal sabuur isku mid ah Joogitaanka ama maqnaanshaha xaashida naxaasta ah ee lakabka hoose ee calaamad kasta waa inay ahaato mid joogto ah.
(3) Dusha PCB oo leh qaybaha SMD, waxaa lagu talinayaa in la dhigo saddex calaamadood oo meelaynta indhaha ah oo ku yaal geesaha guddiga si loo dhigo meelaynta saddex-geesoodka ah ee PCB (saddex dhibcood ayaa go'aaminaya diyaarad, taas oo ogaan karta dhumucda alxanka. dhaji).
(4) Soo rogida, marka lagu daro saddex calaamadood oo meelaynta indhaha ah ee looxa oo dhan, waxa fiican in la qaabeeyo laba ama saddex calaamadood oo meelaynta indhaha ah oo ku yaala geesaha geesaha ee looxa cutub kasta.
(5) Aaladaha ay ka midka yihiin QFP oo leh masaafada dhexe ee rasaasta ≤0.5mm iyo BGA oo leh masaafada dhexe ≤0.8mm, calaamadaha meelaynta indhaha ee maxalliga ah waa in lagu dhejiyaa geesaha geesaha si sax ah loo dhigo.
(6) Haddii ay jiraan qaybo ku rakiban labada dhinac, waa in ay jiraan calaamado meelaynta indhaha oo dhinac kasta ah.
(7) Haddii uusan jirin dalool meelaynta PCB-ga, bartamaha calaamadda meelaynta indhaha waa in ay ka fogaato 6.5mm cidhifka gudbinta PCB. Haddii uu jiro dalool meelaynta PCB-ga, bartamaha calaamada meelaynta indhaha waa in lagu qaabeeyaa dhinaca godka meelaynta ee u dhow xarunta PCB-ga.