Ibikoresho Bikuru byo Gukora PCB

Ibikoresho by'ingenzi byo gukora PCB

Muri iki gihe, hari abakora PCB benshi, igiciro ntabwo kiri hejuru cyangwa kiri hasi, ubuziranenge nibindi bibazo ntacyo tuzi, uburyo bwo guhitamoGukora PCBibikoresho?Ibikoresho byo gutunganya, muri rusange isahani yambaye umuringa, firime yumye, wino, nibindi, ibikoresho byinshi bikurikira kugirango utangire muri make.

1. Yambaye umuringa

Yitwa impande ebyiri zometseho umuringa.Niba ifiriti y'umuringa ishobora gutwikirwa neza kuri substrate igenwa na binder, kandi imbaraga zo kwambura isahani yambaye umuringa ahanini biterwa n'imikorere ya binder.Bikunze gukoreshwa umuringa wambaye umuringa ufite uburebure bwa mm 1.0, 1,5 mm na 2.0 mm eshatu.

(1) ubwoko bwibisahani byumuringa.

Hariho uburyo bwinshi bwo gutondekanya amasahani yambaye umuringa.Mubisanzwe ukurikije ibikoresho bishimangira isahani biratandukanye, birashobora kugabanywamo: urupapuro rwimyenda, ibirahuri bya fibre fibre base, base base (CEM series), plaque ya plaque et base base base base (ceramic, base base base, nibindi) bitanu ibyiciro.Ukurikije ibimera bitandukanye bya resin bikoreshwa nubuyobozi, impapuro zisanzwe zishingiye kuri CCL ni: resin fenolike (XPC, XXXPC, FR-L, FR-2, nibindi), epoxy resin (FE-3), resin polyester nubundi bwoko .Ibirahuri bisanzwe byibirahure CCL ifite epoxy resin (FR-4, FR-5), kuri ubu ni ubwoko bukoreshwa cyane mubirahuri bya fibre.Ibindi bikoresho byihariye (hamwe nigitambara cya fibre fibre, nylon, idoda, nibindi kugirango wongere ibikoresho): imide ebyiri ya manic imide yahinduwe triazine resin (BT), polyimide (PI) resin, diphenylene ideal resin (PPO), inshingano ya aside irike - styrene resin (MS), poly (ogisijeni ya ogisijeni ester resin, polyene yashyizwe muri resin, nibindi. Ukurikije imiterere ya flame retardant ya CCL, irashobora kugabanywamo plaque retardant na plaque retardant plaque. Mu myaka yashize kugeza ku myaka ibiri, hibandwa cyane cyane ku kurengera ibidukikije, ubwoko bushya bwa CCL butagira ibikoresho byo mu butayu bwatejwe imbere muri flame retardant CCL, ishobora kwitwa "green flame retardant CCL". Hamwe n’iterambere ryihuse ry’ikoranabuhanga ry’ibicuruzwa bya elegitoroniki, CCL ifite ibisabwa mu rwego rwo hejuru. Kubera iyo mpamvu. , uhereye kumikorere ya CCL, irashobora kugabanwa mubikorwa rusange CCL, dielectric ihoraho ya CCL, irwanya ubushyuhe bwinshi CCL, coefficente yo kwagura ubushyuhe buke CCL (ikoreshwa muburyo bwo gupakira substrate) nubundi bwoko.

(2)ibipimo ngenderwaho byerekana isahani yumuringa.

Ubushyuhe bwikirahure.Iyo ubushyuhe buzamutse mukarere runaka, substrate izahinduka kuva "ikirahuri" ihinduka "reberi", ubu bushyuhe bwitwa ubushyuhe bwikirahure (TG) bwisahani.Nukuvuga, TG nubushyuhe bwo hejuru (%) aho substrate ikomeza gukomera.Nukuvuga ko ibikoresho bisanzwe byubushyuhe hejuru yubushyuhe bwo hejuru, ntibitanga gusa koroshya, guhindura ibintu, gushonga nibindi bintu, ahubwo binagaragaza kugabanuka gukabije kuranga imashini n'amashanyarazi.

Mubisanzwe, TG yibibaho bya PCB iri hejuru ya 130 ℃, TG yibibaho birebire hejuru ya 170 and, naho TG yibibaho biri hejuru ya 150 ℃.Mubisanzwe agaciro ka TG kangana 170 yacapishijwe, bita ikibaho kinini cya TG.TG ya substrate iratera imbere, kandi kurwanya ubushyuhe, kurwanya ubushuhe, kurwanya imiti, gutuza nibindi biranga ikibaho cyacapwe bizanozwa kandi bitezimbere.Hejuru ya TG agaciro, niko arushaho guhangana nubushyuhe bwisahani, cyane cyane mubikorwa bidafite isasu,hejuru ya TG PCBni Byakoreshejwe cyane.

2. Dielectric ihoraho.

Hamwe niterambere ryihuse ryikoranabuhanga rya elegitoronike, umuvuduko wo gutunganya amakuru no kohereza amakuru uratera imbere.Kugirango twagure umuyoboro witumanaho, imikoreshereze yimurwa yimurirwa murwego rwo hejuru, bisaba ibikoresho bya substrate kugira dielectric ihoraho E hamwe nigihombo gito cya dielectric TG.Mugabanye E gusa hashobora kuboneka umuvuduko mwinshi wo kohereza ibimenyetso, kandi mugabanye TG gusa bishobora kwerekana igihombo cyohereza kugabanuka.

3. Coefficient yo kwagura ubushyuhe.

Hamwe niterambere ryukuri kandi ryinshi ryibibaho byacapwe na BGA, CSP nubundi buryo bwikoranabuhanga, inganda za PCB zashyize ahagaragara ibisabwa byisumbuyeho kugirango habeho ubunini bwicyapa cyumuringa.Nubwo ituze rinini ryisahani yumuringa rifitanye isano nigikorwa cyo gukora, biterwa ahanini nibikoresho bitatu bibisi byerekana isahani yumuringa: resin, ibikoresho byubaka hamwe na fayili y'umuringa.Uburyo busanzwe nuguhindura resin, nka epoxy resin yahinduwe;Mugabanye igipimo cyibisigisigi, ariko ibi bizagabanya amashanyarazi hamwe nimiti ya substrate;Umuringa wumuringa ntugira uruhare runini muburyo bwo guhagarara kwumuringa wambaye umuringa. 

4.Imikorere ya UV.

Muburyo bwo gukora imbaho ​​zumuzunguruko, hamwe no kumenyekanisha kugurisha ibyiyumvo byamafoto, kugirango wirinde igicucu cya kabiri cyatewe ningaruka zombi ku mpande zombi, substrate zose zigomba kugira umurimo wo gukingira UV.Hariho inzira nyinshi zo guhagarika ihererekanyabubasha rya ULTRAVIOLET.Mubisanzwe, ubwoko bumwe cyangwa bubiri bwimyenda ya fibre fibre na epoxy resin birashobora guhinduka, nko gukoresha epoxy resin hamwe na UV-blok hamwe nibikorwa byikora bya optique.

Huihe Inzira ni uruganda rwumwuga PCB, buri nzira irageragezwa cyane.Kuva kumurongo wumuzunguruko kugirango ukore inzira yambere kugeza iheruka kugenzura ubuziranenge, urwego rugomba kugenzurwa cyane.Guhitamo imbaho, wino yakoreshejwe, ibikoresho byakoreshejwe, hamwe nuburemere bwabakozi byose birashobora kugira ingaruka kumiterere yanyuma yubuyobozi.Kuva mu ntangiriro kugeza kugenzura ubuziranenge, dufite ubugenzuzi bw'umwuga kugirango buri gikorwa kirangire bisanzwe.Twiyunge natwe!