Izinto Eziyinhloko Zokwenziwa Kwe-PCB
Namuhla, kunabakhiqizi abaningi be-PCB, intengo ayiphezulu noma iphansi, ikhwalithi nezinye izinkinga esingazi lutho ngazo, ukuthi ungakhetha kanjaniUkukhiqizwa kwe-PCBizinto zokwakha?Izinto zokucubungula, ngokuvamile ipuleti le-copper clad, ifilimu eyomile, uyinki, njll., izinto ezimbalwa ezilandelayo zesingeniso esifushane.
1. Izembatho zethusi
Ibizwa nge-double-sided copper clad plate.Ukuthi i-foil yethusi ingambozwa ngokuqinile ku-substrate kunqunywa i-binder, futhi amandla okuhlubula we-copper clad plate ikakhulukazi ancike ekusebenzeni kwe-binder.Ipuleti le-copper clad elivame ukusetshenziswa elivame ukusetshenziswa ngu-1.0 mm, 1.5 mm no-2.0 mm amathathu.
(1) izinhlobo zamapuleti anezingubo zethusi.
Kunezindlela eziningi zokuhlukanisa amapuleti e-copper clad.Ngokujwayelekile ngokwezinto zokuqinisa ipuleti zihlukile, zingahlukaniswa zibe: isisekelo sephepha, isisekelo sendwangu yengilazi yendwangu, isisekelo esiyinhlanganisela (uchungechunge lwe-CEM), isisekelo sepuleti elinezingqimba eziningi kanye nesisekelo sezinto ezikhethekile (i-ceramic, isisekelo sensimbi, njll.) izigaba.Ngokwezinamatheliso ezihlukene ze-resin ezisetshenziswa ibhodi, i-CCL esekelwe ephepheni ejwayelekile yilena: i-phenolic resin (XPC, XXXPC, FR-L, FR-2, njll.), i-epoxy resin (FE-3), i-polyester resin nezinye izinhlobo. .Isisekelo se-glass fibre evamile i-CCL ine-epoxy resin (FR-4, FR-5), okwamanje iwuhlobo olusetshenziswa kakhulu lwe-glass fiber base.Enye i-resin ekhethekile (enendwangu ye-fiber yengilazi, inayiloni, engalukiwe, njll ukuze kwandiswe indwangu) : i-resin ye-maleic imide modified triazine (BT), i-polyimide (PI) resin, i-diphenylene ideal resin (PPO), isibopho se-maleic acid imine - I-styrene resin (MS), i-poly (i-oxygen acid ester resin, i-polyene eshumekwe ku-resin, njll. Ngokusho kwezindawo ezibushela ilangabi ze-CCL, ingahlukaniswa ngamapuleti abushela ilangabi nangawohloki amalangabi. Eminyakeni yakamuva eyodwa kuya kwemibili, ngokunaka kakhulu ukuvikelwa kwemvelo, uhlobo olusha lwe-CCL olungenazo izinto zasogwadule lwathuthukiswa ku-CCL ye-flame retardant, engabizwa ngokuthi “i-CCL e-green flame retardant.” Ngokuthuthuka okusheshayo kobuchwepheshe bomkhiqizo we-elekthronikhi, i-CCL inezidingo zokusebenza eziphezulu. , kusukela kusigaba sokusebenza se-CCL, ingahlukaniswa ngokusebenza okujwayelekile kwe-CCL, i-CCL ephansi ye-dielectric engaguquki, i-CCL yokumelana nokushisa, i-coefficient ephansi yokwandisa okushisayo kwe-CCL (evame ukusetshenziselwa ukupakisha i-substrate) nezinye izinhlobo.
(2)izinkomba zokusebenza ze-copper clad plate.
Izinga lokushisa lokushintsha kwengilazi.Lapho izinga lokushisa likhuphuka liye endaweni ethile, i-substrate izoshintsha isuka "kwisimo sengilazi" ibe "isimo senjoloba", lokhu kushisa kubizwa ngokuthi izinga lokushisa lokushintsha kwengilazi (TG) yepuleti.Okusho ukuthi, i-TG izinga lokushisa eliphakeme kakhulu (%) lapho i-substrate ihlala iqinile.Okusho ukuthi, izinto ezivamile ze-substrate ekushiseni okuphezulu, azigcini nje ukukhiqiza ukuthambisa, ukuguqulwa, ukuncibilika nezinye izenzakalo, kodwa futhi zibonisa ukwehla okubukhali kwezici zemishini kanye nogesi.
Ngokuvamile, i-TG yamabhodi e-PCB ingaphezu kuka-130 ℃, i-TG yamabhodi aphezulu ingaphezu kuka-170 ℃, kanti i-TG yamabhodi aphakathi ingaphezu kuka-150 ℃.Ngokuvamile inani le-TG lebhodi eliphrintiwe elingu-170, elibizwa ngokuthi ibhodi eliphrintiwe le-TG eliphezulu.I-TG ye-substrate ithuthukisiwe, futhi ukumelana nokushisa, ukumelana nomswakama, ukumelana namakhemikhali, ukuzinza kanye nezinye izici zebhodi eliphrintiwe kuzothuthukiswa futhi kuthuthukiswe.Lapho inani le-TG liphakeme, kuba ngcono ukumelana nezinga lokushisa kwepuleti, ikakhulukazi enqubweni engenamthofu,Inani eliphakeme kakhulu lama-PCBisetshenziswa kabanzi.
2. I-Dielectric constant.
Ngokuthuthuka okusheshayo kobuchwepheshe be-elekthronikhi, ijubane lokucubungula ulwazi kanye nokudluliswa kolwazi liyathuthukiswa.Ukuze kwandiswe isiteshi sokuxhumana, imvamisa yokusetshenziswa idluliselwa endaweni ephezulu yemvamisa, okudinga ukuthi impahla ye-substrate ibe ne-dielectric engaguquki engu-E kanye ne-TG yokulahleka kwe-dielectric ephansi.Ngokunciphisa u-E kuphela lapho kungatholwa isivinini esikhulu sokudlulisa isignali, futhi ngokunciphisa i-TG kuphela lapho kungancipha ukulahlekelwa kokudluliswa kwesignali.
3. I-coefficient yokwandisa ukushisa.
Ngokuthuthukiswa kokunemba kanye nezendlalelo eziningi zebhodi eliphrintiwe kanye ne-BGA, i-CSP nobunye ubuchwepheshe, amafekthri e-PCB abeke phambili izidingo eziphakeme zokuzinza kosayizi wepuleti le-copper clad.Nakuba ukuzinza kwe-Dimensional ye-copper clad plate kuhlobene nenqubo yokukhiqiza, kuncike kakhulu ezintweni ezintathu zokusetshenziswa zepuleti le-copper clad: i-resin, i-reinforcement material ne-foil yethusi.Indlela evamile iwukushintsha inhlaka, njenge-modified epoxy resin;Yehlisa isilinganiso sokuqukethwe kwe-resin, kodwa lokhu kuzonciphisa ukufakwa kukagesi kanye nezakhiwo zamakhemikhali ze-substrate;Ucwecwe lwethusi lunomthelela omncane ekuzinzeni kwe-dimensional ye-copper clad plate.
4.Ukusebenza kokuvinjwa kwe-UV.
Enqubweni yokwakhiwa kwebhodi lesifunda, ngokusakazwa kwe-photosensitive solder, ukuze kugwenywe ithunzi eliphindwe kabili elibangelwa ithonya elihlangene ezinhlangothini zombili, wonke ama-substrates kufanele abe nomsebenzi wokuvikela i-UV.Ziningi izindlela zokuVIMBELA ukudluliswa kokukhanya kwe-ULTRAVIOLET.Ngokuvamile, uhlobo olulodwa noma ezimbili zendwangu yengilazi yefayibha kanye ne-epoxy resin kungashintshwa, njengokusebenzisa i-epoxy resin ene-UV-block kanye nomsebenzi wokubona okuzenzakalelayo.
I-Huihe Circuits iyimboni ye-PCB ekhokhelwayo, yonke inqubo ihlolwe ngokuqinile.Kusukela ebhodini lesifunda ukwenza inqubo yokuqala kuya ekuhlolweni kwekhwalithi yenqubo yokugcina, ungqimba phezu kongqimba kudingeka luhlolwe ngokuqinile.Ukukhethwa kwamabhodi, uyinki osetshenzisiwe, izinto ezisetshenziswayo, kanye nokuqina kwabasebenzi konke kungathinta ikhwalithi yokugcina yebhodi.Kusukela ekuqaleni kuya ekuhlolweni kwekhwalithi, sinokugada okuphrofeshinali ukuze siqinisekise ukuthi yonke inqubo iqedwa ngokujwayelekile.Sijoyine!
Isikhathi sokuthumela: Jul-20-2022
