The yakadhindwa redunhu bhodhi inoumbwa neyakavharidzira substrate, redunhu bhodhi pachayo, uye waya dzakadhindwa kana zvisaririra zvemhangura zvinopa iyo svikiro iyo magetsi inoyerera kuburikidza nedunhu. Iyo substrate zvinhu zvinoshandiswa zvakare sePCB kuputira kuti ipe magetsi kuputira pakati penzvimbo dzinoita. Iyo multilayer board ichave neanopfuura imwechete substrate iyo inopatsanura matete. Chii chakajairika pcb substrate yakagadzirwa?

Pcb substrate zvinhu

Pcb substrate zvinhu zvinofanirwa kuve zvakagadzirwa zvisina-kuitisa zvinhu nekuti izvi zvinokanganisa nzira yazvino kuburikidza nedunhu rakadhindwa. Muchokwadi, iyo substrate zvinhu ndeyePCB insulator, iyo inoshanda seyakaganhurirwa piezoelectric insulator yedunhu redunhu. Kana uchibatanidza waya pamatanho akatarisana, yega yega yedunhu yakabatana kuburikidza nemakomba akafukidzwa pabhodhi.

Zvishandiso zvinogona kushandiswa seanoshanda substrates zvinosanganisira fiberglass, teflon, ceramics uye mamwe mapolymers. Iyo inonyanya kuzivikanwa substrate nhasi ingangoita FR-4. Fr-4 is fiberglass epoxy laminate isingadhuri, inopa yakanaka magetsi insulator uye ine yakakwira murazvo kudzora kupfuura fiberglass yega.

Pcb substrate mhando

Iwe uchawana makuru mashanu epcb substrate mhando pane akadhindwa wedunhu mabhodhi. Ndeipi substrate mhando inozoshandiswa kune chaiyo yakadhindwa redunhu bhodhi zvinoenderana neyako pcb inogadzira uye mhando yechishandiso. Pcb substrate mhando ndeinotevera:

Fr-2: FR-2 ingangodaro iri yakaderera chikamu cheiyo substrate iwe yauchazoshandisa, kunyangwe iine murazvo unodzora zvivakwa, sekuratidzwa kwezita reFR. Yakagadzirwa kubva pachinhu chinonzi phenolic, bepa rakaiswa mushonga rakagadzirwa nemagirazi faibha. Akachipa emagetsi emagetsi anowanzo kushandisa akadhindwa wedunhu mabhodhi ane FR-2 substrates.

Fr-4: Imwe yeakajairika pcb substrates ndeye fiberglass yakarukwa substrate ine murazvo unodzora zvinhu. Nekudaro, yakasimba kupfuura iyo FR-2 uye haitsemuki kana kutyoka zviri nyore, ndosaka ichishandiswa mune zvigadzirwa zvepamusoro. Kubaya maburi mukati kana kugadzirisa fosi yegirazi, vagadziri vePCB vanoshandisa matungsten carbide maturusi zvichienderana nemhando yezvinhu.

RF: RF kana RF substrate yemapuraneti akadhinda akagadzirirwa kushandiswa musimba reRF mafomu. Iyo substrate zvinhu inoumbwa neyepasi dielectric plastiki. Ichi chinyorwa chinokupa iwe yakasimba kwazvo magetsi emagetsi, asi isina kusimba michina zvivakwa, saka zvakakosha kuti ushandure iyo RF bhodhi yemhando chaiyo yekushandisa.

Kuchinja-chinja: Kunyange mabhodhi eFR uye mamwe marudzi eesaizi anowanzo kuve akaomarara, kumwe kunyorera kungangoda kushandiswa kwemabhodhi anochinjika. Aya macircuit anoshanduka anoshandisa matete, epurasitiki epurasitiki kana firimu seiyo substrate. Kunyangwe mahwendefa anochinjika akaomarara kugadzira, iwo ane zvakwakanakira. Semuenzaniso, iwe unogona kukotama bhodhi inochinjika kuti ikwane nzvimbo iyo isingagone kubhodhi.

Simbi: Kana yako application ichisanganisira magetsi emagetsi, inofanira kunge iine yakanaka yekupisa kuitisa.Izvi zvinoreva kuti substrates ine low thermal resistance (senge maceramics) kana simbi dzinogona kubata yakakwira mafashama pasimba remagetsi akadhindwa wedunhu mabhodhi anogona kushandiswa.