Anoshanda matambudziko efaindi PCB Kubudisa

Nekuvandudzwa kwemaindasitiri emagetsi, kusangana kwezvinhu zvemagetsi kuri pamusoro uye kwakakwirira, uye vhoriyamu iri diki uye diki, uye BGA mhando yekupakata inoshandiswa zvakanyanya. Naizvozvo, dunhu rePCB richava diki uye diki, uye huwandu hwesimba huchawedzera uye nekuwanda. Kuderedza mutsetse upamhi uye mutsetse kutsemura ndeye kushandisa zvakanaka nzvimbo shoma, uye kuwedzera huwandu hwematanho kushandisa nzvimbo. Iyo huru yebhodhi redunhu mune ramangwana iri 2-3mil kana zvishoma.

Zvinowanzo davirwa kuti pese panogadzirwa bhodhi redunhu kana kukwira giredhi, inofanirwa kupihwa mari kamwe chete, uye mari yekudyara yakakura. Mune mamwe mazwi, epamusoro-giredhi redunhu mabhodhi anogadzirwa neepamusoro-giredhi michina. Nekudaro, haazi ese mabhizinesi anogona kuwana hukuru-hukuru hwekudyara, uye zvinotora yakawanda nguva nemari kuita zviedzo zvekutora maitiro data uye kuyedza kugadzirwa mushure mekudyara. Semuenzaniso, zvinoita senge iri nani nzira yekuyedza uye kuyedza kugadzirwa zvinoenderana nemamiriro ezvinhu ebhizinesi, uye wozofunga kuti woisa mari here zvichienderana nemamiriro ezvinhu chaiwo nemusika mamiriro. Iri bepa rinotsanangura zvakadzama muganhu weupamhi hwetambo hupamhi hunogona kugadzirwa pasi pechimiro chemidziyo yakajairwa, pamwe nemamiriro uye nzira dzekugadzirwa kwemitsetse yakatetepa.

Iyo yakajairika yekugadzira maitiro inogona kugoverwa muvhavha gomba etching nzira uye graphic electroplating nzira, zvese zviri zviviri zvine zvadzo zvazvakanakira nekuipa. Iyo dunhu yakawanikwa neacid etching nzira yakanyatsofanana, inoenderana nemhedheni kudzora uye kushomeka kwekusvibisa kwezvakatipoteredza, asi kana gomba rakatyoka, rinobviswa. Alkali ngura yekugadzira kutonga kuri nyore, asi mutsetse hauna kuenzana uye kusvibiswa kwezvakatipoteredza kwakakurawo.

Chekutanga pane zvese, yakaoma firimu ndiyo inonyanya kukosha chikamu chekugadzira mutsara. Mafirimu akaomeswa akasiyanasiyana ane zvisarudzo zvakasiyana, asi kazhinji anogona kuratidza linewidth uye mutsara nzvimbo ye2mil / 2mil mushure mekuratidzwa. Kugadziriswa kwemuchina wekuburitsa muchina kunogona kusvika 2mil. Kazhinji, iyo linewidth uye mutsara kupatsanura mukati meiyi renji hakuzokonzere matambudziko. Pa4mil / 4mil linewidth line spacing kana pamusoro, hukama pakati pekumanikidza uye yemvura mushonga wevasungwa hauna kukura. Pazasi pe3mil / 3mil linewidth line spacing, iyo kamwene ndiyo kiyi yekukanganisa resolution. Kazhinji, kamuri yakaumbwa-fan inoshandiswa, uye kusimudzira kunogona kuitwa chete kana iko kumanikidza kuri pamusoro pe3bar.

Kunyangwe iyo yekuburitsa simba ine simba rakakura pamutsetse, mazhinji emafirimu akaomeswa anoshandiswa mumusika kazhinji ane nzvimbo yekuratidzira yakawanda. Inogona kusiyaniswa padanho 12-18 (nhanho 25 yekuratidzira mutongi) kana nhanho 7-9 (nhanho 21 yekubuda mutongi). Kazhinji kutaura, yakaderera yekuburitsa simba inobatsira kugadzirisa. Nekudaro, kana simba radzikira kwazvo, guruva uye masundries akasiyana siyana mumhepo ane simba guru pairi, zvichikonzera kuvhurika kwedunhu (acid corrosion) kana pfupi dunhu (alkali corrosion) mune yekupedzisira maitiro Naizvozvo, iko kugadzirwa chaiko kunofanirwa kuve inosanganiswa nehutsanana hwenzvimbo yerima, kuti usarudze hushoma mutsetse upamhi uye mutsetse chinhambwe chebhodhi redunhu iro rinogona kugadzirwa zvinoenderana nemamiriro chaiwo acho.

Mhedzisiro yekuvandudza mamiriro pane resolution iri pachena kana mutsetse uri mudiki. Kana mutsetse uri pamusoro pe4.0mil / 4.0mil, mamiriro ari kusimukira (kumhanyisa, kusanganisa mushonga wemvura, kumanikidza, nezvimwewo) Iko kufurira hakuonekwe; kana mutsetse uri 2.0mil / 2.0 / mil, chimiro uye kumanikidza kwemhino kunoita basa rakakosha mukuti mutsetse unogona kugadzirwa zvakajairika. Panguva ino, kumhanyisa kwekumhanyisa kunogona kudzikira zvakanyanya. Panguva imwecheteyo, iko kusungwa kwemushonga wemvura kunokanganisa pakuonekwa kwetambo. Chikonzero chingangodaro ndechekuti kumanikidzwa kweyeya-yakaita saizi yakakurisa, uye kushushikana kuchiri kusvika pasi peiyo yakaoma firimu apo nzvimbo yemitsara iri diki kwazvo Kubudirira: kumanikidzwa kweiyo conical kamwene idiki, saka zvakaoma kukudziridza mutsetse wakanaka. Iko kunongedzwa kweimwe ndiro kune zvakakosha mukugadzirisa uye pamadziro edivi reiyo yakaoma firimu.

Makemikari akasarudzika akasiyanasiyana ane zvisarudzo zvakasiyana. Parizvino, mumwe muchina wekuratidzira mweya-watonhorera, nzvimbo yechiedza sosi, imwe yacho yakatonhorera nemvura uye inongedzera mwenje sosi. Sarudzo yayo yezita ndeye 4mil. Nekudaro, kuyedza kunoratidza kuti inogona kuzadzikisa 3.0mil / 3.0mil pasina yakakosha kugadzirisa kana kushanda; inogona kunyange kuwana 0.2mil / 0.2 / mil; kana simba radzikira, rinogona zvakare kusiyaniswa ne 1.5mil / 1.5mil, asi mashandiro anofanira kungwarira Mukuwedzera, hapana musiyano uri pachena pakati pekugadziriswa kweMylar pamusoro negirazi pamusoro pekuyedza.

Kune alkali ngura, panogara paine howa mhedzisiro mushure me electroplating, iyo inowanzo kuve pachena uye isiri pachena. Semuenzaniso, kana iyo tambo yakakura kudarika 4.0mil / 4.0mil, iyo howa mhedzisiro idiki.

Kana mutsetse uri 2.0mil / 2.0mil, iwo maitiro acho akanaka kwazvo. Iyo yakaoma firimu inogadzira howa chimiro nekuda kwekufashukira kwemutobvu netini panguva yeelectroplating, uye iyo yakaoma firimu yakasungwa mukati, izvo zvinoita kuti zvive zvakaoma kwazvo kubvisa iyo firimu. Mhinduro idzi ndeidzi: 1. Shandisa yakaoma firimu yakaoma, iyo yakaoma yakaoma firimu ndeye 2-35 microns, uye mukobvu wakaoma firimu 38-50 microns, iyo inodhura. Iyi yakaoma firimu iri pasi pe acid acid. Asi nzira idzi hadzina kukwana. Muchokwadi, zvakaoma kuve neyakakwana nzira.

Nekuda kwehunhu hwehowa, kutsemurwa kwemitsara yakatetepa kunonetsa zvikuru. Nekuti iyo ngura yesodium hydroxide kutungamira uye tini ichave iri pachena pa2.0mil / 2.0mil, inogona kugadziriswa nekukora mutobvu netini nekudzikisa kuwanda kwesodiyamu hydroxide panguva yeelectroplating.

Mune alkaline, Kana bhodhi redunhu risina zvido zvakakosha paukobvu hwetambo yakaburitswa, iro redunhu bhodhi ine hukobvu hwe0.25oz mhangura yemhangura inozoshandiswa kuigadzira, kana chikamu chesimbi mhangura ye0.5ozz ichaiswa, iyo yakapetwa mhangura ichave yakatetepa, tini inotungamira ichasimbiswa, nezvimwewo zvese zvinoita basa mukugadzira mitsara ine alkaline etching, uye iyo kamwene ichave yakafanana ne fan. Conical kamwene inowanzo shandiswa chete 4.0mil / 4.0mil ndiyo inogona kuwanikwa.

Munguva ye acid acid, yakafanana nealkali etching ndeyekuti mutsetse upamhi uye mutsara dhizaini kumhanya zvakasiyana, asi kazhinji, panguva yekucheka acid, iyo yakaoma firimu iri nyore kutyora kana kukwenya mask firimu uye pamusoro pefirimu mukutapurirana uye yapfuura maitiro. Naizvozvo, hanya inofanira kutorwa panguva yekugadzirwa. Mutsetse mhedzisiro yeacid .

Mukugadzirwa kwekuita, kumhanyisa uye tembiricha yekumonera kwefirimu, hutsanana hweplate pevhu uye hutsanana hwe diazo firimu zvine simba rakakura pachiyero cheyunifomu, iyo inonyanya kukosha kune iyo paramende yeasidhi etching firimu kupfeka uye kumeso kweplate pamusoro; kune alkali etching, hutsanana hwekuratidzira hwakakosha kwazvo.

Naizvozvo, zvinofungidzirwa kuti zvakajairika michina inogona kuburitsa 3.0mil / 3.0mil (achireva firimu mutsetse upamhi uye nzvimbo yekusiyanisa) mabhodhi pasina akakosha kugadzirisa; zvisinei, iwo muyero wehunyanzvi unokanganiswa nehunyanzvi uye danho rekushanda kwenzvimbo uye vashandi. Alkali ngura yakakodzera kugadzirwa kwematunhu emabhodhi pazasi pe3.0mil / 3.0mil. Kunze kwekuti iyo isina-base mhangura idiki kune imwe nhanho, mhedzisiro yemhutu-wakaumbwa kamwene zviri pachena zviri nani pane uya weyemberi muromo.