Kugera ku byizaIgishushanyo cya PCB, usibye inzira rusange yo guhinduranya, amategeko agenga ubugari bwumurongo no gushyira mubikorwa nabyo ni ngombwa. Ni ukubera ko ubugari bwumurongo no gutandukana byerekana imikorere no gutuza kw'ikibaho cyumuzunguruko. Kubwibyo, iyi ngingo izatanga intangiriro irambuye ku mategeko rusange agenga umurongo wa PCB na Spacing.
Ni ngombwa kumenya ko igenamiterere rya software rigomba gushyirwaho neza hamwe no kugenzura amategeko yo gushushanya (DRC) bigomba gushobozwa mbere yo kunyuramo. Birasabwa gukoresha gride 5mil kugirango inzira zingana, kandi uburebure bungana 1mil grid irashobora gushyirwaho hashingiwe kuri iki kibazo.
Umurongo wa PCB amategeko agenga:
1.Rout igomba kubanza guhuraGukemura Gukemuray'uruganda. Emeza uwakoze umusaruro hamwe numukiriya no kugena ubushobozi bwabo. Niba nta bisabwa byihariye bitangwa numukiriya, reba uburyo bwo guhinduranya inyandikorugero kubinini byumurongo.
2.InzemuInyandikorugero: Ukurikije uburebure bwatanzwe hamwe nibisabwa ku mukiriya, hitamo icyitegererezo kidakwiye. Shira umurongo umurongo ukurikije ubugari bwabazwe imbere muri moderi. Indangagaciro zisanzwe zirimo 50ω, itandukaniro 90ω, 100ω, nibindi byandika niba ibimenyetso bya 50ω bikaba byanditseho 50 Kuri PCB isanzwe Stactup mugihe yerekanwe hepfo.
3.ana yerekanwe mugishushanyo gikurikira, ubugari bwumurongo bugomba kubahiriza ibisabwa. Muri rusange, hashingiwe ku bunararibonye no gusuzuma imitwe ya KING, Igishushanyo mbonera cy'imbaraga kirashobora kugenwa nubuyobozi bukurikira: Kubushyuhe bwa 10 ° C, hamwe nubunini bwa 1oz Kubwa 0.5oz umuringa, ubugari bwa 40mil burashobora gukemura ibiro birenze urugero 1a.
4. Kubishushanyo rusange, ubugari bwumurongo bugomba kuba bukwiye kugenzurwa hejuru ya 4mil, ishobora kuzuza ubushobozi bwinganda bwa benshiAbakora PCB. Kubishushanyo aho kugenzura bitari ngombwa (ahanini imbaho 2-zumurongo), ushushanya ubugari bwumurongo hejuru ya 8mil birashobora gufasha kugabanya igiciro cyo gukora cya PCB.
5. Rebaumuringagushiraho urwego ruhuye mumarongo. Fata Umuringa wa 2oz kurugero, gerageza gushushanya umurongo wa 6mil. Umubyimba wumuringa, umutware wagutse umurongo. Saba ibisabwa byingenzi byuruganda kubishushanyo bidasanzwe umuringa.
6. Kubya BGA Ibishushanyo 0.5mm na 0.65mm, ubugari bwa 3.5mil burashobora gukoreshwa mubice bimwe (birashobora kugenzurwa namategeko agenga).
7. Ubuyobozi bwa HDIIbishushanyo birashobora gukoresha ubugari bwa 3mil. Kubishushanyo hamwe nubugari bwo hagati ya 3mil, birakenewe kwemeza ubushobozi bwumusaruro bwuruganda, nkuko abakora bamwe bashobora gushobora gusa gusa ubugari bwa 2mil (burashobora kugenzurwa namategeko agenga ibishushanyo). Kuraho umurongo wumurongo wongera ibiciro byo gukora no kwagura umusaruro.
8. Ibimenyetso bya Analog (nka videwo yerekana amashusho) bigomba gukorerwa imirongo yijimye, mubisanzwe hafi 15mil. Niba umwanya ari muto, ubugari bwumurongo bigomba kugenzurwa hejuru ya 8mil.
9. Ibimenyetso bya RF bigomba gukemurwa nimirongo yijimye, hamwe no kugenzurwa na wegeranye kandi bigenzurwa na 50ω. Ibimenyetso bya RF bigomba gutunganywa kubice byinyuma, birinda ibice byimbere no kugabanya ikoreshwa rya vias cyangwa impinduka. Ibimenyetso bya RF bigomba kuba bikikijwe nindege yubutaka, hamwe na enterineti nibyiza kuba umuringa wa gnd.
PCB Wiring umurongo w'amategeko
1. Insinga igomba kubanza kuzuza ubushobozi bwo gutunganya uruganda, kandi umurongo wa SPACING ugomba kubahiriza ubushobozi bwumusaruro, muri rusange bigenzurwa na mil cyangwa hejuru. Ku mirongo ya bga hamwe na 0.5mm cyangwa 0,65mm spcing, umurongo wa milika 3.5 urashobora gukoreshwa mubice bimwe. Ibishushanyo bya HDI birashobora guhitamo umurongo wa mil 3. Ibishushanyo biri munsi ya 3 MIL igomba kwemeza ubushobozi bwumusaruro bwuruganda rukora umukiriya. Abakora bamwe bafite ubushobozi bwumusaruro wa mil 2 (igenzurwa mubikoresho byihariye).
2. Mbere yo gushushanya umurongo wa Spacing umurongo, tekereza ku miringa ya Copper ibisabwa. Kuri 1 ounce umuringa gerageza kugumana intera ya mil 4 cyangwa hejuru, hamwe na 2 umuringa, gerageza kugumana intera ya mil 6 cyangwa hejuru.
3. Igishushanyo mbonera cyibimenyetso bitandukanye bigomba gushyirwaho ukurikije ibyangombwa byimpongo kugirango umenye neza.
4. Insinga zigomba kuba kure yimiterere yinama hanyuma ugerageze kwemeza ko ikadiri ishobora kugira impamvu (GND) vias. Komeza intera hagati y'ibimenyetso no kugaburira hejuru ya mil 40.
5. Ikimenyetso cyamashanyarazi kigomba kugira intera byibuze mil 10 kuva kumurongo wa gnd. Intera iri hagati yimbaraga nimbaraga zindege zigomba kuba byibura mil 10. Kuri Bics (nka BGAS) hamwe na spacing ntoya, intera irashobora guhinduka muburyo buke bwa MIL 6 (igenzurwa mubintu byihariye).
6.Ibimenyetso by'imiеporty nk'amasaha, ibishushanyo, n'ibimenyetso bya analog bigomba kugira intera y'inshuro 3 z'ubugari (3w) cyangwa uzengurutswe n'ubutaka (gnd) indege (gnd). Intera iri hagati yumurongo igomba kubikwa inshuro 3 umurongo wagabanijwe kugirango ugabanye ibihingwa. Niba intera iri hagati yibigo mirongo ibiri ntabwo ari munsi yinshuro 3 umurongo, birashobora gukomeza 70% yumurima wamashanyarazi hagati yumurongo nta kwivanga, bizwi nkihame rya 3.
7.Ibimenyetso byerekana urwego bigomba kwirinda kwirangizwa. Icyerekezo cyinzira kigomba gukora imiterere ya orthogonal kugirango igabanye inkomoko idakenewe.
8. Iyo routing kumurongo hejuru, komeza intera byibuze 1mm kuva kumwobo kugirango wirinde imirongo ngufi cyangwa umurongo ujugunya guhangayika. Agace gakikije umwobo bigomba kubikwa.
9. Iyo ugabanye amashanyarazi, wirinde amacakubiri arenga. Mu ndege imwe, gerageza kutagira ibimenyetso birenga 5, byaba byiza mubimenyetso 3 byamashanyarazi, kugirango ugire ubushobozi bwo gutwara kandi wirinde ibyago byo kwambuka indege yegeranye.
10.Ibisobanuro byindege bigomba kubikwa nkuko bisanzwe, bitabaye amacakubiri maremare cyangwa dumbbell, kugirango wirinde ibihe ari binini kandi hagati ni bito. Ubushobozi bwo gutwara bugomba kubarwa bushingiye ku bugari buke bw'indege y'umuringa.
Shenzhen Anke PCB Co, ltd
2023-9-16
Igihe cyo kohereza: Sep-19-2023
