Ezinye Izingxenye Ze-elekthronikhi I-PCBA: Ukukhetha, Ukuvunyelwa kanye Nokuqinisekiswa Kokukhiqiza

Chaza ukuthi kusho ukuthini ukuthi “i-Alternate Electronic Component” kule phrojekthi

Igama elithi “i-alternate” livame ukusetshenziswa ezimweni eziningana ezahlukene. Amaphrojekthi aphephile ahlukanisa ushintsho oluhlongozwayo ngaphambi kokuqhathanisa intengo noma ukutholakala.

Ushintsho lomsabalalisi alufani noshintsho lwengxenye. Ngokufanayo, i-IC ehambisana nonyawo ayishintshi ngogesi. I-BOM kanye nohlu lwabathengisi abavunyiwe kufanele lusho ukuthi ukuthenga kungashintsha yini abasabalalisi, abakhiqizi noma ama-MPN ngaphandle kwemvume eyengeziwe. Amanothi ajwayelekile anjengokuthi “okulingana okuvunyelwe” abanzi kakhulu ekukhiqizweni okulawulwayo.

Qhathanisa Amapharamitha Alawula Ukuziphatha Komkhiqizo Ngempela

Izinkambu zokuqhathanisa zincike ekilasini lezinto. Kwabaphikisi, qinisekisa ukumelana, ukubekezelelana, isilinganiso samandla, i-voltage yokusebenza, ikhono lokushaya kwenhliziyo, i-coefficient yokushisa, ubuchwepheshe, imodi yokwehluleka kanye nobukhulu bephakheji. Kwabaphikisi be-ceramic, faka ukubekezelelana kwe-capacitance, i-voltage elinganisiwe, i-dielectric, ukulahlekelwa yi-DC-bias, ububanzi bokushisa, ukuziphatha kokuguga, i-ESR, i-ESL kanye nezidingo zokuphela. I-capacitance efanayo enobukhulu becala elifanayo ingaletha i-capacitance ephumelelayo ehlukene kakhulu kusekethe.

Kuma-inductor nama-ferrite, hlola izimo zokuhlolwa kwe-inductance noma i-impedance, i-saturation current, ukunyuka kwezinga lokushisa, i-DCR, imvamisa yokuzivumelanisa nezimo kanye nokuvikela okunamandla. Kuma-connectors nama-switch, qhathanisa uhlelo lokuhlangana, isilinganiso samanje, i-contact plating, amandla okugcina, imijikelezo yokufaka, ukuphakama, ukugcina kanye nokubekezelelana kwemishini.

Ama-semiconductor adinga ukubuyekezwa okuhlelekile:

• izilinganiso eziphezulu kakhulu kanye nemikhawulo yokusebenza enconyiwe;
• ukuphotha, izidingo zephini ezingasetshenziswanga kanye nokulandelana kwamandla;
• okuzenzakalelayo kokuqala, isikhathi, ukunemba kwe-analog kanye nemikhawulo yokuvikela;
• ubukhulu bephakheji, iphedi eveziwe, ukumelana nokushisa kanye nokuzwela komswakama;
• amarejista e-firmware, ukuhlela imemori, imodi yokuqalisa kanye nezici zokuphepha;
• izinga lokufaneleka, inqubomgomo yesaziso soshintsho kanye nomjikelezo wokuphila olindelekile.

I-Highleap yenza izincazelo ze-BOM ezingacacile zijwayelekile ngaphambi kokuthola. Umugqa ofana no-“10 µF 0805” awanele ngoba awufaki uchungechunge lomkhiqizi, i-voltage, i-dielectric, ukubekezelelana kanye nomngcele wokufaka esikhundleni ovunyiwe.

Bhala phansi okungaziwa esikhundleni sokuphoqa isiphetho esilinganayo

Uma ishidi ledatha lingashicileli ipharamitha edingekayo, liphawule njengento evulekile. Ungaqageli ikhono lokukhuphuka, izimo zokudonsa kwangaphakathi, izinto zokugcina noma ibanga lokufaneleka kusuka ochungechungeni olufanayo. Isixazululo singadinga isitatimende somkhiqizi, isilinganiso sesampula noma isinqumo sokwenqaba umuntu ozongenela ukhetho. I-matrix yokuqhathanisa ibalulekile ngoba yenza ubufakazi obungekho bubonakale kubunjiniyela nasekuthengeni ngaphambi kokuba ingxenye i-odwe.

Hlola Ukuhambisana Kwe-PCB Footprint, Stencil kanye Nokuhlanganiswa

Ukulingana kukagesi kweshidi ledatha akubonisi ukuthi kungenziwa kahle. Imidwebo yephakheji kufanele iqhathaniswe nobubanzi be-terminal, i-pitch, usayizi womzimba, ukuma, i-exposed-pad geometry, i-coplanarity kanye nokumakwa kokuqondisa. I-QFN noma i-LGA efana kakhulu ingadinga ukuvuleka kwe-stencil okuhlukile noma izindlela zokuhlola. Isixhumi singalingana nama-pads kodwa siphazamise i-enclosure noma ikhebula lokuhlanganisa.

Ukubuyekezwa komhlangano kufanele kufake:

• ukuhambisana kwephethini yomhlaba kanye ne-geometry yokuhlangana kwe-solder;
• izidingo zokuvula i-stencil kanye nomthamo wokunamathisela;
• I-MSL, izimo zokubhaka kanye nemikhawulo yokugeleza kabusha;
• ukupakishwa kwezingxenye, okondlayo kanye nokwethulwa kwe-polarity;
• Ukubonakala kwe-AOI kanye nesidingo se-X-ray samalunga afihliwe;
• umthelela wenqubo yokushintshanisa ngesandla, ukucindezela noma ukukhetha;
• ukulingana komshini, ukugcinwa kanye nokulayisha isevisi.

I-Highleap ingaqhathanisa ezinye izindlela eziphakanyisiwe namafayela e-PCB akhishwe kanye nenqubo yokuhlanganisa. Uma kudingeka ukwakheka noma ushintsho lwe-stencil, isibuyekezo kufanele sidlule kumklamo wokubuyekezwa kokuhlanganisa ngaphambi kokwakhiwa kokuhlola. Izindlela zokuhlola ezifana ne -AOI ziqinisekisa ukubekwa kanye nezimo ezibonakalayo ze-solder, kodwa azithathi indawo yokuqinisekiswa kukagesi noma kokusebenza.

Yakha I-Matrix Yokuvunyelwa Kwengxenye Ehlukile kanye Nenqubo Yokulawula Ushintsho

I-matrix yokugunyazwa ivimbela ukutholakala kwezimpahla eziphuthumayo ekubeni yi-insert engalawulwayo. Umugqa ngamunye we-BOM kufanele ube nesimo esichaziwe:

• Kukhishwe: enye ivunyelwe ku-BOM noma ku-AVL yamanje futhi ingathengwa ngaphansi kwemibandela eshiwo.
• Okunemibandela: enye ingasetshenziswa ngemuva kokubuyekezwa okucacisiwe, ukuvunyelwa kwesampula noma umphumela wesihloko sokuqala.
• kukhawulelwe: akukho okunye okuzoshintshwa ngaphandle kwemvume ebhaliwe yomnikazi womklamo.
• Ushintsho lomthombo kuphela: i-MPN efanayo ingathengwa ngomunye umsabalalisi ogunyaziwe ogunyaziwe.

I-matrix kufanele futhi irekhode iphakheji evunyiwe, ibanga lokufaneleka, inqubomgomo yekhodi yosuku, imibhalo yokuthobela imithetho, inombolo yengxenye yekhasimende kanye nokubuyekezwa komkhiqizo okusebenzayo. Inketho eyodwa ingasebenza ekubuyekezweni kwenhlangano eyodwa kodwa hhayi kwenye.

Ukulawulwa koshintsho kufanele kuchaze ukuthi ubani ophakamisa, ohlola futhi ovuma enye. Ukuthenga akufanele kuvume ukulingana kukagesi; ubunjiniyela akufanele kuvume umthwalo wemfanelo wezohwebo noma ukuvezwa kwe-NCNR; ukukhiqiza kufanele kuqinisekise ukuhambisana kwenqubo; ikhwalithi kufanele kuqinisekise ukulandeleka nokuhlolwa. Ubufakazi obukhishwe kufanele bufake irekhodi lokuqhathanisa, ukuvunyelwa, i-BOM/AVL ebuyekeziwe, amafayela okukhiqiza athintekile, imiphumela yesampula kanye nenqwaba yokukhiqiza ephumelelayo.

Qinisekisa Izingxenye Ezihlukile Ngokusebenzisa Amasampula, Ukuhlanganiswa Kwe-Pilot kanye Nokuhlolwa

Ukujula kokuqinisekisa kufanele kulandele umphumela wokwehluleka kanye nobukhulu boshintsho. I-alternative engasebenzi enobungozi obuphansi ingadinga ukubuyekezwa kobukhulu, ukuqinisekiswa okuncishisiwe kanye nesampula esebenzayo. I-MCU entsha, idivayisi yememori, umsakazo, isigaba samandla noma ingxenye ehlobene nokuphepha ngokuvamile idinga ukuhlolwa kokuhlehla okubanzi.

I-Highleap ingakha i-pilot elawulwayo isebenzisa izingxenye zokuqala nezihlukile ukuze kuqhathaniswe. Uhlelo lokuhlola kufanele lugweme izitatimende zokuphasa/zokwehluleka ezingacacile. Kufanele luchaze ububanzi bokuphakelwa, umthwalo, izinga lokushisa lapho kufanele khona, ukuhlolwa kokuxhumana, inguqulo ehleliwe, imikhawulo yamanje kanye nezindlela zokwamukelwa komkhiqizo othize. Kuphela ngemva kokuvunyelwa lapho okunye kufanele kukhishwe khona ukuze kuthengwe ivolumu.

Umshayeli kufanele futhi aqinisekise izilawuli zokukhiqiza ezingase zingaveli ekuhlolweni kwebhentshi. Qinisekisa ukupakishwa kwe-feeder, ukuqashelwa kwe-polarity, ukuqina kokubekwa, impendulo yokunamathisela i-solder, ukuziphatha kokugeleza kabusha, ukubonakala kokuhlola kanye nendlela yokuphinda usebenze. Qopha inqwaba kanye nomthombo osetshenzisiwe ukuqinisekisa ukuze ukukhiqizwa kungafaki esikhundleni sephakheji ehlukile yokubuyekezwa noma inqwaba yomhlinzeki ngaphandle kokubuyekezwa.

Lokho Okulethwa Yi-Highleap Kumaphrojekthi Okuhlanganisa I-PCB Alternate-Component

Iphrojekthi ye-Highleap alternate component ingafaka i-BOM ejwayelekile, ukuqinisekiswa kwe-MPN okuqondile, izinketho zomthombo ogunyaziwe, amathebula omehluko wobuchwepheshe, ukubuyekezwa komthelela we-PCB kanye ne-stencil, ikhotheshini yokuqala uma kuqhathaniswa nenye, ukuhlanganiswa kwe-pilot kanye nokukhishwa kokukhiqiza okulawulwa ukubuyekezwa. Ububanzi bokugcina buncike ebunkimbinkimbini bezingxenye kanye nezidingo zokuqinisekiswa kwamakhasimende.

Ukuze uqale, nikeza:

• I-BOM enezinkomba zokubhekisela, ubuningi kanye nama-MPN okuqala;
• umthamo wonyaka kanye nokuphila komkhiqizo okulindelekile;
• imikhiqizo evunyiwe, imithombo engavunyelwe kanye nemigqa engashintshi;
• Ama-Gerber noma i-ODB++, imidwebo ye-centroid kanye neyokuhlanganisa;
• amafayela e-firmware/programming lapho kufanele khona;
• ukucaciswa kokusebenza-ukuhlolwa kanye nemikhawulo yokuhambisana;
• izindleko eziqondiwe noma inkinga yesikhathi sokukhokha ethintekile.

I-Highleap izokhomba ukuthi yiziphi iziphakamiso ezithenga izinguquko, ezidinga ukuvunyelwa kobunjiniyela bamakhasimende kanye nezidinga umsebenzi we-PCB noma we-firmware. Ukukhiqiza ngeke kusebenzise enye indlela yobuchwepheshe engagunyaziwe ngoba nje itholakala.

Ikhotheshini ingahlelwa ngezingqimba ezintathu: ukubuyekezwa kokuthola kuphela ezinye izindlela ezikhishwe, ukuqhathaniswa kobunjiniyela kwabazongenela ukhetho abanomehluko olawulwayo, kanye nomsebenzi we-prototype/wokuqinisekisa izinguquko ezithinta i-PCB, i-firmware noma ukuhlolwa. Lokhu kuvimbela ikhasimende ekukhokheni i-NRE yezinga lokuklama kabusha ngoshintsho lomsabalalisi ngenkathi kuvimbela nokufakwa esikhundleni kwe-semiconductor okuyinkimbinkimbi ukuthi kuphathwe njengomsebenzi wokuthenga kuphela.

Ukuze kukhishwe ivolumu, i-Highleap ingarekhoda umthombo ovunyiwe kanye ne-MPN ku-BOM yokukhiqiza, ihlonze okushintshiwe okulawulwa amakhasimende, futhi igcine amarekhodi okukhiqiza ngokwezidingo ze-oda ezivunyelwene ngazo. Noma yisiphi isitifiketi sezinga lomkhiqizo noma iziqu ezisemthethweni zihlala zingaphandle kobubanzi obujwayelekile bokuhlanganiswa ngaphandle kokuthi kufakwe ngokucacile.