Mabhodhi edunhu akadhindwa (PCBs) ave chikamu chakakosha chehunyanzvi hwemazuva ano, achisimbisa zvese zvemagetsi zvatinovimba nazvo mazuva ese.Kunyange izvo zvikamu uye mabasa ePCB achinyatsozivikanwa, pane chinhu chimwe chakakosha chinowanzo furatirwa asi chakakosha pakushanda kwayo: iyo substrate.Mune ino blog positi, isu tichaongorora kuti chii chinonzi substrate muPCB uye nei ichiita basa rakakosha kudaro.
Chii chinonzi substrate muPCB?
Substrates, inowanzonzi PCB substrates kana bhodhi zvinhu, ndiwo hwaro hwekuisa PCB zvemagetsi zvikamu.Iyo isiri-conductive layer inopa tsigiro yemaitiro uye inoshanda senge yemagetsi insulation layer pakati pematanho emhangura pabhodhi redunhu.Iyo inonyanya kushandiswa substrate zvinhu muPCB kugadzira igirazi fiber yakasimbiswa epoxy laminate, inowanzozivikanwa seFR4.
Zvinorehwa neiyo base material:
1. Mechanical rutsigiro:
Basa guru re substrate ndere kupa mechanical rutsigiro kune dzakapfava zvikamu zvakaiswa pabhodhi.Iyo inovimbisa kugadzikana uye kusimba kwePCB, ichiibvumira kutsungirira kunze kushushikana, kutenheka uye tembiricha shanduko.Pasina substrate yakasimba, kutendeseka kwemaitiro ePCB kunogona kukanganisa, kukanganisa kushanda uye hupenyu hurefu hwechigadzirwa chemagetsi.
2. Kuvharirwa kwemagetsi:
Iyo substrate inoshanda seyemagetsi insulator pakati pe conductive copper layers paPCB.Vanodzivirira mapfupi emagetsi uye kupindira pakati pezvikamu zvakasiyana uye zvinyorwa, izvo zvinogona kukonzera kusashanda kana kukanganisa.Uyezve, iyo dielectric zvimiro zve substrate inobatsira kuchengetedza kutendeseka uye kunaka kwemagetsi masaini anoyerera mukati mebhodhi.
3. Kubvisa kupisa:
Zvigadzirwa zvemagetsi zvinoburitsa kupisa panguva yekushanda.Masubstrates anoita basa rakakosha mukubvisa kupisa kubva kune zvinoriumba kuti zvirambe zviri muchimiro chakanyanya chekushanda.Zvimwe zvinhu zve substrate, senge simbi yepakati PCBs kana ceramics, zvakawedzera kupisa conductivity, zvichibvumira kufambisa kupisa kwakanaka uye kuderedza njodzi yekupisa.
4. Chiratidzo chekuvimbika:
Izvo zvinhu zveiyo substrate zvinonyanya kukanganisa chiratidzo chekuvimbika kwePCB.Semuenzaniso, impedance control inovimbisa kutenderera kuyerera kweakakwira-frequency masaini pasina attenuation.Iyo dielectric inogara uye kurasikirwa tangent ye substrate zvinhu inokanganisa hunhu impedance uye kutapurirana mutsara kuita, pakupedzisira ichiona iyo yese mashandiro uye kuvimbika kwePCB.
Kunyangwe iyo substrate isingawanzo kuve yakanyanya kuoneka, inoita basa rakakosha mukuita, kusimba uye kuvimbika kweiyo yakadhindwa redunhu bhodhi.Kukosha kwe substrate hakugoni kusimbiswa zvakanyanya, kubva pakupa rubatsiro rwemagetsi uye kuparadzaniswa kwemagetsi kufambisa kupisa kupisa uye kuchengetedza chiratidzo chekuvimbika.Kunzwisisa kukosha kwekusarudza iyo chaiyo substrate zvinhu uye zvimiro zvayo kwakakosha kune PCB vagadziri, vagadziri uye vanoda zvemagetsi.Nekunzwisisa basa rema substrates, tinogona kuve nechokwadi chebudiriro yebudiriro uye kushanda kwezvimwe zvemberi uye zvinoshanda zvemagetsi zvishandiso mune ramangwana.
Nguva yekutumira: Jul-26-2023