PCB Surface Qeda Izinhlobo & Ukuqhathanisa

Ama-PCB akha isisekelo sazo zonke izinto zobuchwepheshe zesimanje. Njengoba amasekethe ahlanganisiwe nezinye izingxenye ziba zincane futhi ziyinkimbinkimbi, ama-PCB kumele ahlangabezane nezidingo ezidinga kakhulu zobuqotho besiginali, ukusebenza kahle, kanye nokuthembeka. Esinye isici esibalulekile esithinta lezi zilinganiso ukuphela kobuso be-PCB.

Ukuqedwa okungaphezulu, noma ukunamathela, okusetshenziswe ku-PCB engenalutho kusebenzisa imisebenzi eminingi:

• Ivikela ithusi elingaphansi ekungcoleni nasekungcoleni
• Inika amandla futhi ithuthukise ukuthengiselana
• Ikhuthaza ukuhlangana kwengxenye nokuxhumana
• Ithinta ukudluliswa kwesignali nobuqotho
• Imithelela ukwenziwa nokucutshungulwa

Njengoba kunezinketho ezihlukahlukene manje ezitholakalayo, ukukhetha indawo efanelekile yokuqedela kuhlanganisa ukulinganisa ukusebenza, izindleko, ukwenziwa, kanye nezidingo zohlelo lokusebenza. Lesi sihloko sinikeza ukubuka konke kobuchwepheshe kokuqedwa okuvame kakhulu kwe-PCB surface, okuhlanganisa izici zakhona ezibalulekile, izinzuzo kanye nokubi, izinhlelo zokusebenza ezifanele uhlobo ngalunye, nokucatshangelwa kokucubungula.

Izici Zokushayela Ekukhetheni Kokuqedwa Kwe-Surface

Ukucatshangelwa okuningana okusebenzisanayo kushayela ukukhethwa kwendawo engaphezulu ye-PCB yohlelo olunikeziwe, okuhlanganisa:

• I-Solderability kanye Nokumanzisa: I-solderability engaphezulu kufanele incibilike kalula, yenze inhlanganisela engaguquki, efanayo phakathi kwamaphedi/izingxenye kanye ne-solder ngaphandle kokuxhumana okweqiwe noma ibhuloho. Ukuba manzi kumele ukusabalala/ukubambelela kwesoda ewuketshezi endaweni yonke.
• I-Oxidation kanye Nempilo Yeshelufu: Ukuqedwa okungaphezulu kuvimbela i-oxidation yethusi ephuma emoyeni ngokuhamba kwesikhathi ngaphambi kokudayiswa ukuze kugcinwe ukuqina. Ukuphila kweshelufu kuncike ekuqineni kwe-coating.
• Ukuvumelana Kwe-Bonding: Okokubopha ngocingo noma ukunamathela kuma-conformal coatings noma ama-potting compounds.
• Ubungane Bendawo: Ukuhambisana nomthetho wokusetshenziswa kwezinto, udoti, ukungcola, nempilo yabantu/yemvelo nokuphepha.
• Ukuthembeka Nokuqina: Ukuqhubeka nokusebenza ngaphansi kwengcindezi kagesi, eshisayo, neyomshini ngesikhathi sokuphila komkhiqizo. Kufaka ukumelana nokushaqeka okushisayo noma komshini, ukukhathala, ukuthutha kukagesi, nokuningi.
• Ubuqotho Besiginali: Hlanza amasignali ane-crosstalk encishisiwe noma ukukhishwa kwangaphandle kwesivinini esikhulu, ifrikhwensi yomsakazo (RF), noma izinhlelo zokusebenza ezizwelayo.
• Ukubukeka nokuvivinya: Ukulula kokuhlolwa kwe-optical okuzenzakalelayo kwe-in-line kanye nokuhlolwa kukagesi. Ukuqeda ukuqeda ukuhlola; ama-solder masks angase aphazamise.
• Izindleko: Kokubili izindleko zempahla nezokucubungula, ezilinganiswe nokusebenza.
• Ukukhiqiza: Ukuhambisana nezinqubo zokwenziwa ezifana nokusoda, ukuhlanza, ukuhlanganisa, nokuhlanganisa. Amazinga okusebenza kabusha ancishisiwe.

Ukubaluleka kwesici ngasinye kuncike ohlotsheni lomkhiqizo nezimo zokusebenza. Isibonelo, impilo yeshelufu kanye nokumelana ne-oxidation kungase kungabi nandaba ngevolumu ephezulu ukukhiqizwa ngesikhathi nje ngokunqwabelanisa okuncane. Kodwa-ke, imikhiqizo yezokwelapha noma ye-aerospace ingase ihlale izinyanga noma iminyaka ngaphambi kokuthunyelwa, okudinga ukuphila isikhathi eside.

PCB Fabrication Process Overview

I-PCB isekela ngokuzenzakalelayo izingxenye ze-elekthronikhi kuyilapho inikeza ukuxhumana kukagesi phakathi kwazo. Ibhodi ngokwalo liyi-insulating fiberglass epoxy laminate egqoke ucwecwe lwethusi oluncane ohlangothini olulodwa noma zombili. Le foil yenziwe nge-photolithographically iphethini ibe yimikhondo namaphedi, yakha imizila yokuqondisa. Izingxenye zidayiswa kumaphedi, kungaba ngembobo noma ngaphezulu (SMT). Amabhodi anezendlalelo eziningi anqwabelanisa ndawonye izendlalelo ezingeziwe nezivikelayo ngaphakathi.
Amabhodi angenalutho avela kundwangu ye-PCB kufanele adlule izinqubo ezimbalwa zokuqeda ngaphambi kokuba inani labantu libe nezingxenye:

Ukulungiswa Komphezulu – Ukuwasha kahle nokucwilisa ithusi kugaya futhi kususe ukubola noma ukungcola okuvela ekugcinweni, ekuthunyelweni noma ekuphathweni.

Ukusetshenziswa Kokuqedwa Komphezulu – Isembozo sisetshenziswa ngezinqubo zamakhemikhali ezimanzi ezichazwe ngezansi kuhlobo ngalunye lokuqedwa. Ubukhulu, ukujiya, kanye neminye imingcele kulawulwa eduze.

Isembozo semaski esihlanganisiwe – Lonke ibhodi limbozwa ngoyinki we-epoxy, ngaphandle kwama-contact pad kanye nezixhumi ezishiywe zingabonakali. Ihlinzeka ngokushisa kanye nezimpawu.

Uhlelo lokusebenza lwesikrini se-silk - Izimpawu eziphrintiwe zezingxenye, ama-logo, izikhombisi-ndlela zebhodi, izinkomba ze-polarity kanye nokunye okusiza ekukhiqizeni nasekuxazululeni izinkinga.

Ukuhlolwa kukagesi - Ibhodi ngalinye lihlolwa ngaphakathi kwesekethe ukuqinisekisa ukuhambisana nokuhambisana kukagesi futhi libambe amaphutha kusenesikhathi. Amabhodi ayaphumelela/ayahluleka ngokusekelwe ezidingweni zekhwalithi eqinile.

Ukuqedwa okungaphezulu kwakha ungqimba lwangaphandle oluhlanganisa ithusi lephedi kanye ne-solder esetshenzisiwe, futhi ngaleyo ndlela kungaba nomthelela omkhulu emiphumeleni yokucubungula okulandelayo uma ingahambisani kahle nayo. Manje sibheka izinketho ezivame kakhulu zokuqeda indawo:

I-Hot Air Solder Leveling (HASL)

Indawo ende yokuma ye-PCB, i-hot air solder leveling (HASL) imboza ibhodi nge-solder encibilikisiwe, yenze ungqimba oludayikayo lwe-tin-lead alloy. Njengoba igama layo libonisa, imimese ye-nitrogen eshisayo ishelela i-solder yoketshezi njengoba iphola, inciphisa ukwakheka okungalingani. I-HASL engenamthofu ithatha indawo yamasoda e-tin-silver-copper.

Inqubo: Amabhodi angena ohlelweni lwe-HASL ku-conveyor, edlula ngaphansi kwegagasi elihambayo le-solder elincibilikisiwe elibanjwe ekamelweni eliningi. Ngemva kokucwiliswa, imimese yomoya iqhumisa amabhodi nge-nitrogen eshisayo noma i-argon gas ukuze ilulaze i-solder epholisayo ibe uqweqwe olulinganayo olumanzisa kahle ithusi ngaphambi nje kokuba i-solder iqine. Ama-Edge rails aqukethe inqubo. Amapharamitha - amazinga okushisa, izikhathi zokuchayeka, ukugeleza kwegesi nokucindezela - kudinga ukulawula okuqinile ukuze kukhiqizwe ukuqedwa okungaguquki, kwekhwalithi ephezulu.

Izici ezibalulekile:

• Inqubo yezindleko eziphansi ene- throughput ephezulu
• Ubuchwepheshe obukhulile obunomlando weminyaka engu-50
• Ama-solders asebenza kahle kuma-solder asekelwe ku-tin kanye nezingxenye
• Ukumanzisa kahle kwendawo nokuhleleka
• Ukumbozwa kwethusi okuphezulu kumelana ne-oxidation
• Itholakala mahhala ngezidingo ze-RoHS
• Isiphetho esibukekayo

Izicelo:

Ngokusebenza okuqinile ezindaweni zamanani aphansi, i-HASL ifanela izinto zikagesi zabathengi ezingabizi kakhulu, izinto zikagesi, ugesi wezimoto, kanye nemishini yezokuxhumana/yenethiwekhi.

Izinzuzo:

• Okungabizi, ivolumu ephezulu iyakwazi
• Impilo yeshelufu ende
• I-solderability engaguquki
• Ukumelana ne-etch/ukungcola okuphezulu
• Isebenza kabusha
• Ibonakala ukuze ihlolwe

Okumbi:

• Ayihlelekanga ngokwanele kuma-IC wephimbo elihle
• Ukushaqeka okushisayo kungaguqula amabhodi
• Ukuchithwa kwensimbi ngokuhamba kwesikhathi
• Ukuhlanganisa izingozi ngemiklamo eminyene
• Izinkinga ze-whisking ngethayela elihlanzekile
• Ukwakhiwa kwemfucumfucu kanye nemfucumfucu

I-Organic Solderability Preservative (OSP)

I-OSP yembathisa iminonjana yethusi ngefilimu yokuvikela ephilayo eyakhiwe imidazole, i-triazole, noma ezinye izinhlanganisela ze-heterocyclic. Lesi sendlalelo se-polymer esincanyana esingu-10-100 nje ama-angstroms awugqinsi sivala i-oxidation izinyanga ezingu-6-12 kuyilapho sivumela ukugeleza kwe-solder uma sekushisiwe. I-coating isetshenziswa ngokucwilisa noma ngokufafaza amabhodi ngemuva kwe-microetching.

Inqubo:

Ukulungiswa kwendawo kusetshenziswa ukuhlanzwa kanye ne-microetching kulungisa amabhodi ohlelo lwe-OSP:

1. amabhodi angena ekamelweni elivaliwe
2. I-OSP inkungu ifuthwa ngokulinganayo kuwo wonke amabhodi
3. amabhodi aphuma ekamelweni futhi ome
4. ukuhlanzwa kokugcina

Izixazululo ze-OSP ziqukethe ama-ejenti azinzisayo kanye namabhafa we-pH ukuze asebenze kahle. I-atomization yoketshezi, izinga lokushisa, isikhathi sokuhlala, ukugxila kwamakhemikhali kanye nokuphatha ngemuva kokumboza kufanele kulawulwe ukuze kukhiqizwe ikhwalithi efanele yokuhlanganisa nokungaguquguquki.

Izici ezibalulekile:

• I-Ultra-thin transparent coating
• Ingenamthofu futhi iphephile ngokwemvelo
• Ubushelelezi kune-HASL enobuhlakani obuhle kakhulu
• Isiphetho esingasesenzekeka kabusha
• Izindleko zokuqala eziphansi kunezinye izigqoko

Izicelo:

I-OSP isebenza kahle kuma-elekthronikhi angenawaya futhi aphathekayo, imikhiqizo ye-IoT, ezezimoto, izindiza zezindiza, kanye nezinto zikagesi zezokwelapha lapho ukwethembeka nokuqukethwe okunomthofu kufanele kuncishiswe. Indawo epulalane isiza amabhodi aminyene.

Izinzuzo:

• Isicelo esilula esinezindleko eziphansi
• Isiphetho esihleleke ngokwedlulele
• Ubude bempilo yeshelufu ende
• I-solderability engaguquki
• Ukusebenza kabusha okulula kwamabhodi ahlanganiswe ne-OSP
• Yehlisa izikhindi zamabhuloho

Okumbi:

• Ingaklwejwa ekuphatheni uma ingagqokile
• Ikhono lokufihla i-solder elilinganiselwe
• Kunzima ukuhlola ngokubonakalayo ukumbozwa
• Kwake kwavuleka iwindi lomhlangano omfushane
• Ukuthembeka okubuthakathaka ngokuhlolwa ngakunye kwe-IPC*
• I-copper oxidation iqala kabusha ngokushesha ngaphezu kuka-175°C

Ukuhlolwa kwe-IPC kuhlotshaniswa nezingubo ze-OSP nezinga eliphezulu lokuhluleka ngaphansi kokuchayeka kwe-thermal, umswakama, nokudlidliza. Kodwa-ke, abaningi basebenzisa ngempumelelo i-OSP noma ngabe kunjalo.

Isiliva Sokucwiliswa

Ukucwilisa ama-PCB epuleti yokugeza yekhemikhali esiliva ungqimba olusiliva oluncane emikhondweni yethusi, kusetshenziswa ukusabela kokususwa kwe-galvanic. I-coating igijima ama-microinches angu-15-25 (ama-microns angu-0.4-0.6) awugqinsi. Imelana nokonakala noma i-oxidation isikhathi eside.

Inqubo:

I-Microetching yenza indawo yethusi isebenze. Amabhodi acwiliswa ku-acidic silver nitrate noma i-silver fluoborate solution enezinzinzisi eziphilayo kanye nama-accelerator. Ama-ion ethusi ashintshanisa indawo nama-ion esiliva anamathisela ibhodi. Amapharamitha - izinga lokushisa, isikhathi sokuhlala, ukwakheka kwamakhemikhali nokugxila kwawo - konke kudinga ukulawula ngokucophelela ukuze kuthuthukiswe ukungaguquguquki nokufana.

Izici ezibalulekile:

• Inqubo enezindleko eziphansi enomphumela omaphakathi
• I-solderability enhle kakhulu kanye ne-conductivity
• Imelana nokonakala kanye ne-oxidation
• Amandla amahle okunamathela kanye nokusebenza kabusha
• Ifanele i-aluminium yokubopha izintambo

Izicelo:

I-Immersion silver isebenzela ukuxhumana okungenantambo, i-infotainment yezimoto nezinhlelo ze-ADAS, izibani ze-LED, nezinye izinto zikagesi ezithembele ekuthembekeni.

Izinzuzo:

• Ukuthembeka okuhlangene kwe-solder okuqinile
• Ukuvikela indawo ehlala isikhathi eside
• Indawo eplaniwe eyisicaba kakhulu
• Izindleko eziphansi kuneziqediwe zegolide
• I-lead-free futhi ithobela i-RoHS

Okumbi:

• Ubuso bushintsha umbala kancane ngokuhamba kwesikhathi
• Ingaklwejwa ngesikhathi sokuphatha
• Impilo emfishane yokusebenza yake yadalulwa
• Kunzima ukuhlola ngaphakathi kwesekhethi
• Amazinga okushisa aphezulu okucubungula

I-Tin yokucwiliswa

Ukucwilisa ama-PCB ahlanziwe ezixazululweni zikathayela oshisayo kubeka ungqimba lukathayela oyisivikelo phezu kwemikhondo yethusi. Izithasiselo ze-organic ezethulwe kubhavu kathayela wokucwiliswa zishintsha ukwakheka kwethayela le-satin ukusuka ku-crystalline enkulu ukuya kwe-micro-crystalline, kugwenywe izinkinga zentshebe.

Inqubo:

Ukulungiswa kwebhodi kulandela ukuhlanza okujwayelekile, ukucwiliswa kancane kancane, ukugeza ngamanzi kanye nokucwiliswa nge-asidi ngaphambi kokungena kubhavu kathayela wokucwiliswa. Ukugcina ukulawulwa okunembile kwezinga lokushisa kwezixazululo ze-alkaline tin kanye nokulawulwa kwesikhathi sokuhlala, isivinini sokuphakamisa, kanye nokugxila okungeziwe kuholela ekushintshaneni. I-deposition yakha ungqimba lwe-matte tin oluwugqinsi oluyi-4-10 (0.1 - 0.25 micron).

Izici ezibalulekile:

• I-Matte white tin enamathela
• I-solderability enhle kakhulu igcinwe
• Ukufana kogqinsi
• Ukuncibilika kwethusi okuncane
• Ukushintshwa kwesixazululo se-drop-in for tin-lead

Izicelo:

Amajazi kathayela wokucwiliswa ayinkimbinkimbi, amabhodi aminyene kahle. Imelana nama-alloys aphezulu okushisa njengezinhlelo zokusebenza ze-silver-copper brazing. Inqubo ethengekayo iphinde ifanele ukusetshenziswa okunokwethenjelwa okuphezulu kwezokuvikela, i-aerospace, ukuzulazula nokuxhumana.

Izinzuzo:

• Ijazi lepulani elibushelelezi lama-IC we-ultra fine pitch
• Azikho izinkinga ze-whisking
• Isiphetho esisebenza kabusha nesilungisekayo
• Ayingenwa yi-oxidation endaweni yokugcina
• Ikhono le-flux-less soldering
• Izindleko zesikhathi eside eziphansi

Okumbi:

• Impilo emfishane yokusebenza yake yadalulwa
• Ithambekele ekungcoleni nasekuthutheni
• Izinkinga zokunqanyulwa ngokuqedwa kwe-matte
• Kunzima ukuhlola ngokubonakalayo ukumbozwa
• Inqubo ebucayi bezinga lokushisa

I-Immersion Gold (ENIG)

Electroless nickel immersion gold (ENIG) idiphozitha izendlalelo ezimbili zensimbi ukuze zivikeleke ngokuqinile futhi zithengiseke. Okokuqala, i-auto-catalytic chemical reaction plates nickel inqamula ithusi ukuya kugqinsi lwama-microns angu-3-7 ngaphandle kwamanje kagesi. Khona-ke ukusabela kokugudluka phakathi kwe-nickel nesixazululo kungena esikhundleni sama-athomu angaphezulu kwe-nickel ngocwecwe oluncane lwegolide oluwugqinsi lwama-microns angu-0.05-0.15.

Inqubo:

I-PCB microetching yokuqala ilungisa ithusi. Amabhodi afaka ithangi le-nickel plating elingenawo ugesi. Uma isicutshunguliwe, le nqubo yokubeka i-autocatalytic ngokuqhubekayo ifaka i-nickel ngaphandle kwamanje kagesi. Izinga lokushisa, amabhafa we-pH, ukugxila kwamakhemikhali nobude besikhathi sokuhlala kufanele kuhlale kulinganiselwe ukuze kulingane. Ngemva kokuhlanjululwa kwamanzi, amabhodi acwiliswa kusixazululo segolide esishisayo esisusa ama-athomu e-nickel, enze ungqimba oluncane lwegolide.

Izici ezibalulekile:

• Izindleko ezimaphakathi zokuvikela okuthembekile
• Izinyanga eziyi-12+ impilo yeshelufu
• Isendlalelo segolide sihlala singenasici
• Iyathengiswa ngaphandle kwe-preconditioning
• Indawo eyisicaba ngokwedlulele
• Inqubo enokwethenjelwa kodwa eyinkimbinkimbi

Izicelo:

I-ENIG ifanela imikhiqizo yenani eliphakeme njengamaseva ebhizinisi, ingqalasizinda yezokuxhumana, okogesi wezokuvikela, ama-avionics, nemikhiqizo yezokwelapha lapho ukuphila kweshalofu ende kanye nokuthembeka kwenkundla kuqhuba inani elingaphezu kwezindleko.

Izinzuzo:

• Ukuvikelwa kwe-oxidation okuhlala isikhathi eside
• I-planarity enhle kakhulu esiza i-pitch ICs
• Ukuqina okufanayo okuhambisanayo
• Indawo ethengiswa kakhulu
• Ingqimba yegolide eliqinile imelana nokugqokwa
• Ilungele i-aluminium wire bonding

Okumbi:

• Izindleko zempahla ephezulu (igolide)
• Ukulawula inqubo eyinkimbinkimbi
• I-Brittle nickel layer ngaphansi kwegolide
• Ingozi yephedi elimnyama ngokuhamba kwesikhathi
• Ugqinsi lwegolide okunzima ukulihlola

Electrolytic Nickel/Igolide

Izingqimba ze-nickel/zegolide zisebenzisa izingqimba ezimbili zensimbi zisebenzisa amandla kagesi ngokungafani ne-ENIG. I-nickel underplating yokuqala ekhanyayo ijiya kakhulu kuma-microinches angu-100-250 (ama-microns angu-2.5-6) ​​ngaphambi kokuba i-flash flash coating yehle ngama-microinches angu-10-50 (0.25-1.25 microns). Le nqubo ye-electrolytic ivumela izendlalelo zegolide eziqinile, eziqinile.

Ukubuka konke kwenqubo:

Ama-PCB ama-Microetched agqekezelwa emathangeni e-nickel kanye negolide e-electrolytic plating ngokulandelana lapho ama-anode acwilisiwe nama-cathode avumela amandla amanje ukuthi ageleze efaka insimbi emabhodini. Ukulawula ngokunembile ikhemistri yesixazululo, amazinga okushisa, ama-voltage namapharamitha we-waveform kuqinisekisa ukuvumelana. Imiklamo yokulungisa igwema amaphakethe omoya noma umehluko wokuminyana kuwo wonke amabhodi.

Izici ezibalulekile:

• Izinhlobonhlobo zesendlalelo segolide eliqinile
• Imelana nemijikelezo yokukhwelana ephindaphindiwe
• I-lead-free futhi ithobela i-RoHS
• Isiphetho esingasesenzekeka kabusha

Izicelo:

Izixhumi, iminwe yonqenqema, izindawo zokuxhumana kanye namaphedi okubopha kusebenzisa ukuqina kuyilapho izindleko ezimaphakathi zifanelana nenani eliphezulu lezinhlelo zokusebenza ezizwela izindleko.

Izinzuzo:

• Kakhudlwana, gqoka igolide eliqinile
• Izindleko zezinto eziphansi uma ziqhathaniswa ne-ENIG
• Amalungu athembekile e-solder
• Inqubo yokuphuma ephezulu
• Ivumela ukuhlolwa kophenyo

Okumbi:

• Ubuchwepheshe obuzwela kakhulu
• Isikhathi eside senqubo
• Ama-brittle layers angase aqhekeke
• Ama-PCB aminyene abeka engcupheni ama-voids
• Izindawo ze-Soldermasked zingadinga amabhasi

I-Electroless Ni Electroless Pd Immersion Au (ENEPIG)

I-ENEPIG iqeda ukuthuthukisa i-ENIG, ishintsha i-nickel underlayer nge-electroless palladium ngaphambi kokubekwa kwegolide ukuze kuvikeleke indawo engaphezulu ngaphandle kokugqwala kwe-nickel noma ingozi yephedi elimnyama. Njengenqubo entsha, okwamanje ibiza ngaphezu kwe-ENIG nokho.

Izici ezibalulekile:

• Impilo yeshelufu enhle kakhulu 
• Ukumelana nokugqwala kanye ne-inert
• Isithiyo esiphezulu se-oxidation
• I-lead-free futhi ithobela i-RoHS
• Isiphetho esingasesenzekeka kabusha

Izicelo:

I-ENEPIG ifaneleka kakhulu izinhlelo zokusebenza ezinokwethenjelwa okuphezulu ezineshalofu elide elihlala njenge-aerospace, ukuzivikela, nemikhiqizo yezokwelapha lapho imihlahlandlela yokwethembeka ivelu kunezindleko zokuqala.

Izinzuzo:

• Ukuthembeka okuphezulu nokuphila isikhathi eside
• Iqeda ingozi yephedi elimnyama
• Ilungele izidingo zokubopha izintambo
• Indawo eplaniwe eyisicaba kakhulu
• Ithengiswa iminyaka engu-10+

Okumbi:

• Ukuqedwa kwezindleko eziphezulu
• Isikhathi senqubo esandisiwe
• Isipiliyoni sembonini esinomkhawulo
• Izinselelo zokulawula inqubo
• Kunzima ukuhlola ngamehlo

Isiphetho

Lokhu kubuka konke kokuqedwa kwendawo eyinhloko kugqamise ukuthi ukwenziwa kwe-PCB kumelela uchungechunge lwezinqubo ezincike komunye lapho isinyathelo ngasinye endleleni sithinta umphumela walezo ezilandelayo. Indawo engaphezulu - kungakhathaliseki ukuthi i-Hot Air Solder Leveled, i-Organic Solderability Preservative, i-Immersion Silver, i-Immersion Tin, i-Electroless Nickel Immersion Gold, i-Electrolytic Nickel Gold noma okuhlukile okuhlobene - kunomthelela omkhulu.

Isici sonjiniyela empilweni yeshalofu, ukuthengiswa, ukufaneleka kwebhondi, izidingo zokwethenjelwa, ubuqotho besignali, kanye nemikhawulo yezindleko phakathi kwezinye izinqumo lapho kukhethwa isiphetho sohlelo lwazo oluthile nendawo yokusebenza. Okunye okucatshangelwayo kufaka phakathi ukwenziwa, ukuphuma, ukusetshenziswa kwemishini kanye nokulawula ikhwalithi kalula.

Ukulwela ukwenza kahle kakhulu kuyo yonke le matrix yokucatshangelwa ekugcineni kwenza ihadiwe ye-elekthronikhi esebenzayo, ethembekile futhi engabizi. Njengoba izinhlelo zokusebenza zithuthuka kanye nezimfuno zikhula ziqine ngokwengeziwe, singalindela ukuqamba okusha okuqhubekayo ezinkethweni zokuqeda phezulu nezindlela zokucubungula ukuze kuhlangatshezwane nezidingo ezivelayo.