PCB Ukukhetha substrate

Ukuqwalaselwa kokuqala kokukhetha ii-substrates ngamaqondo obushushu (ukuwelda kunye nokusebenza), iipropathi zombane, unxibelelwano (izinto zewelding, izihlanganisi), amandla olwakhiwo kunye nokuxinana kwesekethe, njl. Nceda ujonge lo mfanekiso ulandelayo xa ufuna iinkcukacha:

Dia Umzobo wokukhetha okwexeshana (umthombo: umthombo “GJB 4057-2000 Iimfuno zeBhodi yeeSekethe eziPrintiweyo zeZixhobo zeMikhosi ye-elektroniki”)

Inkcazo yesibizo

I-FR-4

UFr-4 yikhowudi yeklasi enganyangekiyo yelangatye, emele intsingiselo yento eyakhiwe yintlaka emva kokuba imeko yokutsha kufuneka ikwazi ukuzicima ukucaciswa kwezinto, ayilogama elibonakalayo, kodwa iklasi yezinto ezibonakalayo.

I-tg / ubushushu beglasi yokuguqula

Ixabiso le-Tg libhekisa kwiqondo lobushushu apho utshintsho lwezixhobo lusuka kwimo yeglasi engqingqwa ngakumbi ukuya kwirabha erabha ngakumbi. Qaphela ukuba iipropathi zezinto eziphathekayo ziguquka ngaphezu kweTg.

CTI

I-CTI: Isalathiso sokuKhangela ngokuthelekisa, isifinyezo seKhombisi yokuThelekisa yokuThelekisa.

Intsingiselo: sisalathiso sokuxhathisa kokuvuza. Kwimeko yokufaka i-voltage kumphezulu wezinto zokwambathisa, yenza amathontsi e-electrolytic awile kumphezulu wemveliso ebunjiweyo phakathi kwee-electrode, kwaye uvavanye umbane kude kungabikho monakalo wokuvuza.

Inqanaba le-CTI: inqanaba le-CTI lisusela kwi-0 liye kwi-5. Ngokuncinci inani, kokukhona ukuxhathisa ukuvuza.

PI

Polyimide (PI) yenye yezinto eziphilayo Polymer kunye intsebenzo olugqibeleleyo.Ukuphakama kobushushu bayo ukuya kuthi ga ku-400 ℃ apha ngasentla, ixesha elide lokusetyenziswa kwe-200 ~ 300 ℃, inxenye yendawo ekunyibilikayo kuyo, ukusebenza kwe-insulation ephezulu, i-103 hz ye-dielectric engaguqukiyo i-4.0, ilahleko le-dielectric kuphela yi-0.004 ~ 0.007, eye-F kuH.

CE

(1) I-cyanate resin luhlobo olutsha lwezinto ze-elektroniki kunye nezinto zokwambathisa, ezizezinye zezinto ezibalulekileyo ezisisiseko kwicandelo lezinto zombane kunye netekhnoloji yonxibelelwano ngemicrowave. Sisixhobo esifanelekileyo se-matrix se-radome. Ngenxa yozinzo lwayo olufudumeleyo kunye nokuchasana nobushushu, ulungelelwaniso olwandisiweyo lomlinganiso kunye nezinye izibonelelo, i-resin ye-CE iyeyona nto ibalaseleyo kwimatrix yokuvelisa isantya esiphakamileyo, ukusebenza okuphezulu, iibhodi zesekethe eziprintiweyo ezikumgangatho ophezulu; Ukongeza, i-CE resin yinto elungileyo yokupakisha.

(2) I-resin ye-CE inokusetyenziselwa ukuveliswa komkhosi, ukubhabha ngenqwelomoya, indawo yokubhabha, iindawo zokuhamba, ezinje ngamaphiko, iigobolondo zenqanawa, njl.

(3) CE nentlaka ukuhambelana elungileyo, nentlaka epoxy, ipholiyesta unsaturated kunye nezinye copolymerization unako ukuphucula ukumelana ubushushu kunye neempawu ngoomatshini umbandela, nazo zingasetyenziswa ukuguqula ezinye nentlaka, esetyenziswa njenge yokuncamathelisa, ukutyabeka, iiplastiki amagwebu edityanisiweyo, ngumntu izinto zeendaba, njl.

(4) I-CE sisixhobo esihle sokuhambisa esinokuhambisa okuphezulu kunye nokwenza izinto elubala.

PTFE

I-Poly Tetra fluoroethylene (PTFE), eyaziwa ngokuba yi “non-stick coating” okanye “kulula ukuyicoca”. Lo mbandela unempawu ze-asidi kunye nokuchasana kwe-alkali, ukuxhathisa kwii-solvents ezahlukeneyo kunye nobushushu obuphezulu.

Ukumelana nobushushu obuphezulu: ukusetyenziswa kwexesha elide kweedigri ezingama-200 ~ 260;

Ubushushu obuphantsi ukumelana: buthambile kwi -100 degrees;

Ukuxhathisa umhlwa: ukukwazi ukwenza i-aqua regia kunye nazo zonke izinyibilikisi eziphilayo;

Ukuxhathisa kwemozulu: obona bomi bokuguga bulungileyo;

Ukuthambisa okuphezulu: ulungelelwaniso olusezantsi lweplastikhi (0.04);

Okungabonakaliyo: ukuba neyona ndawo incinci yomsinga wento eqinileyo ngaphandle kokubambelela kuyo nayiphi na into;

Ukungabinetyhefu: ukungena emzimbeni; Ukusebenza kombane okugqwesileyo, yeyona nto ilungele ukwambathisa iklasi eyi-C, umaleko wephephandaba unokuvimba i-1500V yombane ophezulu; Igude ngaphezu komkhenkce.

Nokuba kuyilo lwePCB oluqhelekileyo, okanye isantya esiphezulu, uyilo olukhawulezayo lwePCB, ukhetho lwe-substrate lulwazi olubalulekileyo, kufuneka sifunde. (I-PCB edibeneyo).