Ukukhiqiza i-PoE Switch PCB ye-Power over Ethernet Network Hardware

I -PoE switch PCB kufanele yenze imisebenzi emibili ngesikhathi esisodwa: ukuhambisa idatha ye-Ethernet ngendlela kagesi elawulwayo futhi isabalalise amandla e-DC kumadivayisi asebenza ngamandla ngokusebenzisa i-Ethernet cable interface. Leyo nhlanganisela ishintsha ibhodi kusukela epulatifomu evamile yokushintsha yedijithali ibe umklamo oxubile wesivinini esikhulu, amandla, ukushisa, kanye nokuvikela. Kubathengi namaqembu ehadiwe, ngakho-ke umbuzo wokukhiqiza awukona nje ukuthi ifektri ingakha i-PCB enezingqimba eziningi. Umbuzo owusizo kakhulu ukuthi inqubo yokukhiqiza kanye nokuhlanganisa ingalondoloza yini i-stackup, impedance, i-geometry yethusi, isikhala sokuhlukaniswa, ukubekwa kwezingxenye, kanye nemininingwane yokushisa okuncike kuyo umklamo we-PoE. I-Highleap Electronics isekela ukukhiqizwa kwe-PCB yokuxhumana kanye nokuhlanganiswa kwe-PCB ye-turnkey kusukela ku-prototype kuya ekukhiqizeni, ngokubuyekezwa kobunjiniyela okusekelwe kudatha yokuklama evunyelwe amakhasimende kanye nezidingo zokuhlola.

1. Ukwakhiwa kwe-PoE Switch PCB: Lapho Amandla ne-Ethernet Kwabelana Ngebhodi Elifanayo

Iswishi ye-PoE Ethernet ivame ukuhlanganisa izindawo eziningana ezisebenzayo: iprosesa yokushintsha noma i-ASIC yokushintsha, amadivayisi e-Ethernet PHY, isekethe yememori nokuphatha, ama-magnetics nama-connectors aseceleni kwe-port, isekethe yokuthola amandla e-PoE, ukuguqulwa kwe-DC/DC, amadivayisi okuvikela, kanye nokufakwa kwamandla esistimu. Ukwakheka okuqondile kuyahlukahluka ngenani le-port, isivinini se-Ethernet, uhlobo lwe-PoE, isabelomali sokushisa, kanye nomklamo we-enclosure.

1.1 I-IEEE 802.3 PoE Ishintsha Indlela Yamandla, Hhayi Isidingo Esiyisisekelo se-Ethernet

Amandla phezu kwe-Ethernet ajwayelekile ngaphakathi kwe-IEEE 802.3. Ukusetshenziswa kwe-PoE kwangaphambilini kusebenzisa izindlela ezimbili ezihambisana ne-IEEE 802.3af kanye ne-802.3at, kuyilapho i-IEEE 802.3bt inweba i-PoE ejwayelekile ekulethweni kwamandla amabili kanye namandla aphezulu atholakalayo. Ekukhiqizweni kwe-PCB, lowo mehluko ubalulekile ngoba amandla aphezulu andisa ubuningi bamanje, ukuzwela kokulahlekelwa yithusi, ukukhiqizwa kokushisa, kanye nokubaluleka kokuvumelana kwe-port-to-port.

Umenzi we-PCB akufanele aklame kabusha i-PoE classification noma i-detection circuit. Leyo misebenzi ichazwa yi-schematic yekhasimende kanye ne-PSE controller ekhethiwe. Esikhundleni salokho ukukhiqiza kumele kugcinwe izindlela zethusi ezihlosiwe, izinyathelo zezingxenye, izithiyo zokuhlukanisa, kanye ne-connector/magnetic interface.

1.2 Hlukanisa Ibhodi Ngezindawo Zikagesi Ngaphambi Kwe-DFM

Ukubuyekezwa okuwusizo kwe-DFM kuqala ngokuqonda ukuthi yiziphi izindawo ezizwela kakhulu ugesi:

• Indawo yedatha yesivinini esikhulu: izixhumi zokushintsha zibe yi-PHY, umzila wokuhlukanisa we-PHY ube yi-magnetic, izindiza zokubhekisela, amawashi, kanye namabhasi okuphatha.
• Indawo yamandla ye-PoE: Izilawuli ze-PSE, ama-MOSFET, izakhi ze-current-sense, ukuhlukanisa ngobuningi, iziguquli ze-DC/DC, kanye nokusatshalaliswa kwethusi okunamandla aphezulu.
• Indawo yokuvikela ichweba: Amadivayisi e-TVS, izingxenye zemodi evamile lapho kuchazwe khona, ama-magnetics, izixhumi ze-RJ45, kanye nereferensi ye-chassis/earth ngokuya ngomklamo wesistimu.
• Indawo yokushisa: amadivayisi okushintsha, abalawuli, izifunda ze-PSE, nezinye izingxenye okumelwe ukushisa kwazo kudluliselwe kuthusi, ama-thermal vias, ama-heatsink, noma indawo ebiyelwe.

Ukugcina leyo misebenzi iqondakala ngokomzimba ku-PCB kusiza ithimba lehadiwe kanye nomkhiqizi ukuthi babone izingozi ngaphambi kokukhiqizwa. Ezindaweni eziyinkimbinkimbi zezendlalelo, i -PCB stackup eqoshiwe iwusizo kakhulu kunesicelo esijwayelekile njenge-“multilayer FR-4.”

2. Ithusi, Izindlela Zamanje, kanye Nomklamo Wokushisa Wokulethwa Kwamandla e-PoE

Isigaba se-PoE sivame ukuba yingxenye yebhodi lokushintsha lapho ukwakheka okubonakala kulungile ngogesi kungase kube nzima ukukukhiqiza ngokuthembekile. Ubukhulu bethusi, i-geometry yokulandelela eqediwe, ukwehla kwentamo, ngokwabelana kwamanje, kanye nokusabalalisa kokushisa kwendawo konke kuyasebenzisana.

2.1 Kufanele Kukhethwe Kanjani Isisindo Sethusi Se-PCB Ye-PoE Switch?

Akukho "isisindo sethusi esilungile" esisodwa se-PoE switch PCB. Ithusi elidingekayo kufanele lihlolwe ngokuqhathanisa i-current path geometry kanye nokwenyuka kwezinga lokushisa okuvumelekile kunokukhethwa ekubalweni kwezimbobo kuphela; umthombo wethu we-PCB trace current-capacity uchaza iziguquguquko zokukhiqiza ezithinta lesi sinqumo. Iswishi enamachweba angu-24 ayidingi ngokuzenzakalelayo inani elithile le-ounce. Ukwakhiwa okulungile kuncike ku-current ethwalwa yisigaba ngasinye, ukwenyuka kwezinga lokushisa okuvumelekile, ububanzi bethusi, ukujiya kwethusi, ukubekwa kwesendlalelo, izinga lokushisa elizungezile, ukuhamba komoya, imikhawulo yokuxhuma, kanye nokuthi zingaki izimbobo ezingaletha amandla ngesikhathi esisodwa.

Ukuze kwenziwe, isinyathelo esibalulekile ukuqandisa isidingo sethusi kusenesikhathi. Ukwandisa ubukhulu bethusi sekwephuzile kuphrojekthi kungashintsha isinxephezelo sokusika, isikhala esincane, i-geometry yokulawula ukuvinjelwa, ubukhulu bokucindezela, ngisho nokukhiqizwa kwezindawo zedijithali ezifingqiwe kahle. Uma ibhodi lihlanganisa umzila we-BGA ofingqiwe kahle nethusi elinamandla amakhulu, i-stackup ingadinga izinsimbi zethusi ezahlukene ezingqimbeni ezahlukene kunomthetho owodwa wethusi osindayo yonke indawo.

2.2 Ama-Thermal Vias Awusizo Kuphela Uma Exhumeka Endleleni Yokushisa Yangempela

Ngokusebenzisa ama-array ngaphansi kwama-pads avele obala, ama-MOSFET, abalawuli, kanye nabalawuli be-PoE bangahambisa ukushisa kube yithusi langaphakathi noma eliphambene. Kodwa insimu ebanzi ayiqinisekisi ukusebenza kahle kokushisa uma iphela ezindaweni ezincane zethusi ezihlukanisiwe noma ivinjwe umklamo womshini. Ngakho-ke umdwebo we-PCB kufanele uchaze ngezidingo zohlobo kanye nokugcwalisa lapho ukugoqa i-solder noma ukuhlanganiswa kwe-via-in-pad kuyinkinga.

Ngemiklamo yamandla aphezulu, i-Highleap ingabuyekeza ukukhiqizwa kanye nezici zokushisa ezichazwe kuphakheji yokuklama. Izindlela ezihlobene ezifana nokusabalalisa ithusi, ukushisa ngezakhiwo, kanye nethusi elinzima kuxoxwa ngazo kumthombo wethu wokuphathwa kokushisa we-PCB.

2.3 Izindlela Zokuqonda Kwamanje Zidinga Ukuvumelana Kwejiyometri

Izicelo eziningi ze-PSE zilinganisa ugesi ngokusebenzisa ama-resistors azinikele noma izakhiwo zokuzwa ezichazwe yisilawuli. Umenzi we-PCB kufanele alondoloze ukuxhumana kwe-Kelvin kanye ne-geometry yethusi ehlosiwe ezungeze la masekethe. Ukuhlelwa kwe-CAM okuvamile eduze kwendlela yokuzwa kungashintsha ukumelana ne-parasitic noma ukuziphatha kokulinganisa. Lezi zici kufanele zikhonjwe njengezibaluleke kakhulu ngogesi ngesikhathi sokubuyekezwa kwe-DFM ukuze ukulungiswa kokwenziwa okuvamile kungaziphazamisi.

3. Ukuvikela Ubuqotho Besignali ye-Ethernet Ezungeze Amasekethe Amandla e-PoE

I-PoE ayisusi izidingo zobuqotho besignali ze-Ethernet. Indlela yedatha isancike ekusetshenzisweni kwe-PHY, umzila wokuhlukanisa olawulwayo, ukuqhubeka kokubhekisela, ukwakheka kwesixhumi/magnetics, kanye nesiqondiso sokubekwa komthengisi wedivayisi.

3.1 Ukulawulwa Kwe-Impedance Kuyisidingo Sokuqoqwa Kwezinto Ezihlanganisiwe kanye Nejiyometri

Ama-differential pair e-Ethernet kufanele akhiqizwe ngokwethagethi ye-impedance echazwe kumadokhumenti okuklama. Ifektri ye-PCB akufanele icabange ukuthi wonke ama-differential pair ebhodini ayi-impedance efanayo. Ama-Switch-to-PHY SerDes, ama-PHY-to-magnetics traces, amawashi, kanye nezinye izixhumi zesivinini esikhulu zingaba nezidingo ezahlukene.

Iphakheji yokukhiqiza engcono kakhulu ikhomba isakhiwo ngasinye esilawulwayo, indiza yaso yokubhekisela, i-target impedance, kanye nokubekezelelana okuvunyelwe. Umsebenzi wokukhiqiza we-PCB we-Highleap osheshayo uhlanganisa ukucatshangelwa kwe-stackup kanye ne-impedance kwehadiwe yenethiwekhi yedatha.

3.2 Gwema Ukuxhumanisa Umsindo Wokuguqulwa Kwamandla Nokuguqulwa Kube Yindlela Ebucayi

Izingxenye ze-PSE kanye ne-DC/DC zingaqukatha imiphetho yokushintsha okusheshayo kanye nezihibe zamanje ze-di/dt eziphezulu. Lawo mahibe kufanele ahlale ehlangene futhi akufanele abelane ngezindlela zokubuya ezingalawulwa kahle namawashi abucayi noma amabhangqa anesivinini esikhulu. Ngokombono wokukhiqiza, imfuneko eyinhloko ukulondoloza ukuhlukaniswa kwekhasimende, iphethini yokuthunga, ukugcinwa kwethusi, kanye nokubekwa kwezingxenye esikhundleni "sokuhlanza" ukwakheka ngokubonakalayo.

3.3 Ukulingana Kombhangqwana Kubalulekile Nge-Port Interface

Ohlangothini lwe-port, umzila wokuhlukanisa kufanele ugcine ukulingana kwezinhlangothi ezimbili futhi unciphise ukungaqhubeki okungadingekile. Ama-magnetic angahlanganiswa nesixhumi noma asetshenziswe njengezingxenye ezihlukene. Kunoma yikuphi, i-pad geometry, i-pair breakout, kanye nokuqondiswa kwezingxenye kufanele kulandele ukwakheka okuvunyelwe. Uma kuphakanyiswa ukushintshana ngesikhathi sokuthola, ingxenye yokufaka esikhundleni kumele ihlolwe ukuthi inendawo yokunyathela, i-pinout, umsebenzi kagesi, isilinganiso sokushisa, kanye nanoma yiziphi izici ze-magnetic noma ze-PoE ngaphambi kokuhlanganiswa.

4. Izinto okufanele uzicabangele mayelana nokwakheka kwe-Surge, i-ESD, ukuhlukaniswa, kanye ne-Port-Side Layout

Amachweba enethiwekhi axhumanisa i-PCB yokushintsha nezintambo zangaphandle ezinde, ngakho-ke isifunda sechweba sifanelwe ukuphathwa okuhlukile kunesixhumi esibonakalayo sedijithali sangaphakathi. Isu lokuvikela lincike ezindinganisweni eziqondiwe zomkhiqizo, isigaba sokufakwa, ukuhlelwa kwesisekelo, indawo ebiyelwe, kanye nezidingo zemakethe yokugcina.

4.1 Izingxenye Zokuvikela Zidinga Izindlela Zamanje Ezifushane Nezihlosiwe

Ama-diode e-TVS nezinye izingxenye zokuvikela ezidlulayo zisebenza kuphela uma ugesi ungageleza ngendlela elawulwayo engenawo umoya. Imizila emide phakathi kwesixhumi, idivayisi yokuvikela, kanye ne-node yokubuyisa ehlosiwe inciphisa ukusebenza kahle. Umenzi kufanele alondoloze lezi zindlela futhi agweme ukudilizwa kwentamo okungadingekile okulethwa ukuhlelwa kwephaneli noma kwamathuluzi.

4.2 Ingakanani I-Creepage kanye Nokususwa Okudingwa Yi-PoE Switch PCB?

Ama-magnetic e-Ethernet ahlinzeka ngokuhlukaniswa kwe-galvanic ekusetshenzisweni okujwayelekile kwe-Ethernet, kodwa akukho ukuqhekeka kwe-PCB okujwayelekile noma inani lokususwa elisebenza kuyo yonke i-PoE switch. Isikhala esidingekayo sincike ekwakhiweni kokuphepha komkhiqizo, ama-voltage okusebenza, indawo ezungezile, amazinga afanele, i-enclosure kanye nesistimu yokushisa. Ngakho-ke, umklami wesistimu kumele achaze amabanga adingekayo kanye nezici zokuhlukaniswa. Kumabhodi avulekele kuma-transients aseceleni kwekhebula, umongo wokuklama we-EMI/EMC PCB obanzi kufanele futhi ucatshangelwe ezingeni lomkhiqizo. Umdwebo we-PCB kufanele uphawule ngokucacile noma yiziphi izikhala zokuhlukaniswa, ukugcinwa kwethusi, okuvinjelwe ngezindawo, noma isikhala esincane okungafanele sishintshwe. Uma iswishi esiqediwe sihloselwe ukuphepha okuthile noma uhlelo lwe-EMC, lezo zidingo kufanele zihunyushwe zibe yimiyalelo ye-PCB elinganisekayo kanye neyomhlangano kunokuba zishiywe njengenothi "lezinga lezimboni" elijwayelekile.

4.3 I-Chassis kanye ne-Signal Ground Akufanele Kuhlanganiswe yi-Assumption

Amanye amadizayini okushintshana asebenzisa izifunda zomhlabathi ezihlukene kanye nezindawo zomhlabathi zedijithali ezine-coupling elawulwayo; amanye asebenzisa izindlela ezahlukene zokubeka phansi. Umenzi we-PCB kufanele alandele umklamo ovunyelwe yikhasimende futhi akumelwe ahlanganise izindawo zomhlabathi ukuze athuthukise ibhalansi yethusi ngaphandle kokuthi ithimba lobunjiniyela livuma ushintsho. Ukulinganisa kwethusi kufanele kuxazululwe ngaphandle kokushintsha inhloso kagesi.

5. Ukwakhiwa kwe-PoE Switch PCB kanye nokulawulwa kokuhlanganiswa okubalulekile

I-PoE switch PCBA ingahlanganisa izixhumi ezinkulu, ama-IC acwebezelayo, amaphakheji wamandla, ama-magnetic, kanye nezakhiwo zamandla aphezulu ebhodini elilodwa. Leyo ngxube idinga ukwenziwa okuhlelekile kanye nokuhlela ukuhlanganiswa. I-Highleap ingahlanganisa ukwenziwa kwe-PCB, ukutholakala kwezingxenye, ukuhlanganiswa kwe-SMT/THT, ukuhlolwa kwe-AOI/X-ray, kanye nokuhlolwa kokusebenza okuchazwe ngamakhasimende ngaphakathi kokugeleza kwephrojekthi eyodwa; ukuhlolwa okuqondile kanye nobubanzi bokuhlola kuqinisekiswa ngokumelene nephakheji yokwakha evunyiwe.

5.1 Ukubuyekezwa Kokwenziwa

Ngaphambi kokukhiqizwa, idatha ye-PCB kufanele ihlolwe ukubhaliswa kwezingqimba, ukususwa kwethusi kuya emaphethelweni, isilinganiso sesici sokubhoboza, amadamu e-solder-mask, amasongo e-annular, ngezakhiwo, ibhalansi yethusi, i-geometry ye-controlled-impedance, kanye nanoma yiziphi izici ezikhethekile zokuhlukaniswa. Ukuphela kobuso bokugcina kufanele kufane nengxenye, isixhumi, isikhathi seshelufu, kanye nezidingo zokuhlanganiswa kunokukhethwa kuphela ngokwenjwayelo.

5.2 Ukuhlela Umhlangano

I-BOM kufanele ithole izinombolo eziqondile zezingxenye zomkhiqizi kanye nezinye ezivunyiwe. Ama-transformer e-Ethernet, izixhumi ze-integrated-magnetics, abalawuli be-PSE, ama-MOSFET anamandla, ama-sense resistors, ama-oscillator, namadivayisi e-PHY asheshayo awawona ama-candidate amahle okushintshaniswa okungalawulwa.

Kumajoyinti e-solder afihliwe njenge-BGA noma amaphakheji athile e-QFN/LGA, ukuhlolwa kwe-X-ray kungahambisana ne-AOI ngoba i-AOI ayikwazi ukubona amajoyinti ngaphansi komzimba wephakheji. Izixhumi ze-RJ45 ezisebenzisa imbobo edlulayo, izixhumi zamandla, noma ama-transformer zingadinga ukugoqa okukhethiwe, ukugoqa ngamagagasi, noma izinqubo ezenziwe ngesandla kuye ngomklamo wokuhlanganisa. Insizakalo yokuhlanganisa ye-SMT ye-Highleap ingahlanganiswa nezinyathelo zokungena ngembobo kanye nokuhlola ezichazwe kuphrojekthi.

5.3 Izibonelo kanye Nezakhiwo Zokukhiqiza Zinezinhloso Zokufunda Ezihlukene

Ukwakhiwa kweprototype kufanele kuqinisekise ukulingana, inqubo yokuhlanganisa, ukusebenza kwamandla, izindawo ezishisayo ezishisayo, ukusebenza kwe-port, kanye nokufinyelela kokuhlola. Ukukhiqiza-ke kuncike ekulawuleni izinto ezivunyiwe, ukubuyekezwa kwezingxenye, ukuhlanganiswa, izinguquko zenqubo, kanye nemigomo yokuhlola. Ukwakhiwa kwe-PCB yeprototype kubaluleke kakhulu uma imiphumela ibuyiselwa ekukhishweni kokukhiqiza esikhundleni sokuphatha idatha yeprototype kanye nevolumu njengephrojekthi ehlukene.

6. Ukuhlola i-PoE Switch PCBA Ngaphandle Kokuphambanisa Ikhwalithi ye-PCB Nesitifiketi Somkhiqizo

Ukuhlolwa kokukhiqiza kwe-PCB kuqinisekisa ibhodi kanye nokuhlanganiswa ngokumelene nezidingo zokukhiqiza ezichaziwe. Aziqinisekisi ngokwazo ukuthi umkhiqizo wenethiwekhi oqediwe uhambisana ne-IEEE 802.3, amazinga okuphepha, izidingo ze-EMC, noma imithetho yokulawula yesifunda.

6.1 Ukuqinisekiswa Kwebhodi Elingenalutho

Izilawuli ezijwayelekile zebhodi elingenalutho zingafaka ukuhlolwa kokuqhubeka/ukuhlukaniswa kukagesi, ukuhlolwa kobukhulu, ukuhlolwa kwemaski yokubopha kanye nokuhlolwa kokuphela kwendawo, kanye nokulinganiswa kwekhuphoni yokuvimbela ukuvimba uma i-impedance icacisiwe. Ukuhlaziywa kwe-microsection kungacelwa ukuze kwenziwe izingqimba eziningi ngezakhiwo, ukwakheka okuthembekile okuphezulu, noma izinhlelo zekhwalithi ezichazwe amakhasimende.

6.2 Ukuhlolwa Kokuhlanganiswa

Ukuhlolwa kwe-assembly kungahlanganisa ukuhlolwa kwe-solder-paste, i-AOI, i-X-ray yamalunga afihliwe, ukuhlolwa kokubona, ukuhlolwa kwe-polarity/orientation, kanye nemigomo yobuciko. Indlela efanele yokuhlola incike ezinhlotsheni zephakheji kanye nohlelo lwekhwalithi oluvunyelwene ngalo.

6.3 Ingabe Umkhiqizi we-PCB Angaqinisekisa Ukuhambisana Nemithetho Ye-IEEE 802.3 PoE?

Akukho ukuhlolwa okuvamile kwebhodi elingenalutho noma i-PCBA ngokwayo okuqinisekisa umkhiqizo oqediwe ku-IEEE 802.3. Ukuhlolwa okusebenzayo okuwusizo kweswishi ye-PoE kungahlola ukuqalisa, ukufinyelela kokuphatha, ukusungulwa kwesixhumanisi se-Ethernet, ithrafikhi ye-port-to-port, ukutholwa/ukuziphatha kokuhlukaniswa kwe-PoE, ukulethwa kwamandla ngaphansi kwemithwalo echaziwe, ukuqapha kwamanje, kanye nokuziphatha kokushisa. Kodwa-ke, lokhu kuhlolwa kudinga i-fixture, isofthiwe yokuhlola, imikhawulo, imithwalo, kanye nemigomo yokudlula/yokwehluleka. I-Highleap ingakhiqiza futhi ihlangane nencazelo yokuhlola enikeziwe; ukuhambisana komkhiqizo wokugcina kuhlala kuhlobene nomklamo wedivayisi ophelele kanye nohlelo lokuqinisekisa olufanele.

7. Uhlu Lokuhlola lwe-RFQ Lokukhiqiza Nokuhlanganisa i-PoE Switch PCB

Ukuze uthole ikhotheshini ye-PoE switch PCB noma i-turnkey PCBA enembile, thumela ulwazi olwanele kokubili ukwenziwa kanye nokubuyekezwa kokuhlanganiswa. Iphakheji ewusizo ifaka:

• Idatha yokukhiqiza ye-Gerber RS-274X, i-Gerber X2, noma i-ODB++
• Amafayela okubhoboza e-Excellon kanye nomdwebo wokwenziwa
• Ukuhlanganiswa kwezingqimba okuvunyelwe, ukujiya okuqediwe, kanye nesisindo sethusi ngeleveli
• Izinhloso zokuvimbela ukulawulwa kanye nokubekezelelana
• Uhlobo lwe-PoE noma ukwakheka kwamandla okuhambisana nokubuyekezwa komklamo
• Izindawo zokuhlukaniswa, izindawo zokugcina, amanothi okuhamba/ukuvula, kanye nanoma yimiphi imikhawulo ekhethekile yokuphepha
• I-BOM enezinombolo zezingxenye zomkhiqizi kanye nemithetho yokushintsha evunyiwe
• Umdwebo wefayela lokukhetha nokubeka kanye nomhlangano
• Izidingo zokuhlela ze-MCU, EEPROM, CPLD, noma amanye amadivayisi angahlelwa
• Inqubo yokuhlola i-PCBA, izinto ezisetshenziswayo, isofthiwe yokuhlola, kanye nemikhawulo yokupasa/yokwehluleka uma kudingeka ukuhlolwa kokusebenza
• Uhlobo lwesibonelo kanye nobuningi bokukhiqiza kanye nezidingo zokupakisha/zokulandelela

I-Highleap Electronics ingabuyekeza iphakheji yedatha ephelele yokwenziwa kwe-PCB, ukuthola izingxenye, ukuhlanganisa, kanye nokulungiselela ukuhlolwa. Isilinganiso esithembeke kakhulu sisekelwe ku-stackup yangempela, i-BOM, ukwakheka kwamandla, uhlelo lwekhwalithi, kanye nobubanzi bokuhlola—hhayi nje inani lezingqimba namachweba. Ukuze uthole ukuqinisekiswa kokukhiqiza okuqondene nokushintsha, bheka umhlahlandlela wethu wokuhlola ukuthembeka kwe-PCB yokushintsha kwenethiwekhi.