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Chii chinonzi kuburikidza nePCB?
2024-07-25 21:51:41
Chii chinonzi kuburikidza nePCB?
Vias ndiwo maburi akajairika mukugadzirwa kwePCB. Vanobatanidza zvidimbu zvakasiyana zvetiweki imwechete asi kazhinji hazvishandiswe kune solder components. Vias inogona kupatsanurwa mumhando nhatu: kuburikidza nemakomba, bofu vias, uye kuvigwa vias. Ruzivo rweruzivo rweaya matatu vias ndeaya pazasi:
Basa reMapofu Vias muPCB Dhizaini uye Kugadzira
Bofu vias
Blind vias maburi madiki anobatanidza imwe rukoko rwePCB kune imwe pasina kupfuura nepakati pebhodhi rose. Izvi zvinobvumira vagadziri kuti vagadzire maPCB akaomarara uye akazara akazara zvine hungwaru uye nekuvimbika pane nemaitiro akajairwa. Nekushandisa mapofu, vagadziri vanogona kuvaka mazinga akawanda pabhodhi rimwe chete, kuderedza mutengo wechikamu uye nekumhanyisa nguva dzekugadzira. Nekudaro, kudzika kwebofu kuburikidza kazhinji hakufanire kudarika imwe reshiyo inoenderana nekuvhura kwayo. Naizvozvo, kunyatso kudzora kudzika kwekuchera (Z-axis) kwakakosha. Kusakwana kutonga kunogona kutungamirira kumatambudziko panguva ye electroplating process.
Imwe nzira yokusika mapofu vias kunosanganisira kuchera makomba anodiwa mumwe nomumwe redunhu layer asati laminating navo pamwe chete. Semuenzaniso, kana iwe uchida bofu kubva kuL1 kusvika kuL4, unogona kutanga waboora maburi muL1 neL2, uye muL3 neL4, wozoramisa mativi mana pamwe chete. Iyi nzira inoda yakanyanya kurongeka uye kugadzirisa midziyo. Matekinoroji ese ari maviri anoratidza kukosha kwekurongeka mukuita kwekugadzira kuve nechokwadi chekushanda uye kuvimbika kwePCB.
Kuvigwa vias
Chii chinovigwa vias?
Ndeupi musiyano uripo pakati pemicro kuburikidza nekuvigwa kuburikidza?
Kuvigwa vias vari dzinokosha zvinoriumba PCB dhizaini, kubatanidza yomukati akaturikidzana masekete pasina kuwedzera kune okunze akaturikidzana, achivapa asingaoneki kubva kunze. Aya vias akakosha mukati mechiratidzo chekubatanidza. Nyanzvi dzePCB indasitiri dzinowanzo cherechedza kuti, "Kuvigwa vias kunoderedza mukana wekukanganiswa kwechiratidzo, kuchengetedza kuenderera kweiyo tambo yekutapurirana hunhu impedance, uye kuchengetedza wiring nzvimbo." Izvi zvinoita kuti ive yakanaka kune yakakwirira-density uye yakakwirira-kumhanya maPCB.
Sezvo akavigwa vias haigoni kucherwa post-lamination, kuchera kunofanira kuitwa munhu redunhu akaturikidzana pamberi lamination. Izvi zvinotora nguva yakawanda zvichienzaniswa kuburikidza-makomba uye mapofu vias, zvichiita kuti yepamusoro mari. Pasinei neizvi, vias akavigwa anonyanya kushandiswa mu-high-density PCBs kuti awedzere nzvimbo inoshandiswa kune mamwe matunhu ematunhu, nekudaro kuwedzera kushanda kwese uye kuvimbika kwePCB.
Kuburikidza nemakomba
Kuburikidza nemaburi anoshandiswa kubatanidza mitsara yose kuburikidza nepamusoro pepamusoro uye pasi. Kuisa mhangura mukati memakomba inogona kushandiswa mukati mekubatana kana sechikamu chekuisa gomba. Chinangwa chekuburikidza nemaburi ndechekubvumira kupfuura kwetambo dzemagetsi kana zvimwe zvikamu kuburikidza nepamusoro. Kuburikidza nemaburi kupa nzira yekuisa uye kuchengetedza magetsi ekubatanidza akadhindwa edunhu mabhodhi, waya kana mamwe ma substrates akafanana anoda nzvimbo yekunamatira. Iwo zvakare anoshandiswa sezvibatiso uye zvisungo muzvigadzirwa zvemaindasitiri zvakaita sefenicha, masherufu, uye michina yekurapa. Pamusoro pezvo, kuburikidza nemakomba anogona kupa kupfuura-kuburikidza yekuwana tambo dzakarukwa mumuchina kana zvimiro zvemuviri. Uyezve, nzira yekuvhara kuburikidza nemakomba inodiwa. Viasion inopfupikisa zvinotevera zvinodiwa pakuvharisa nemumakomba.
* Chenesa maburi uchishandisa nzira yekuchenesa plasma.
* Ita shuwa kuti iyo kuburikidza negomba haina marara, tsvina uye guruva.
*Yera iyo kuburikidza nemaburi kuti uone kuti inoenderana neiyo plugging mudziyo
*Sarudza chinhu chakakodzera chekuzadza kuburikidza nemakomba: silicone caulk, epoxy putty, furo rinowedzera kana polyurethane glue.
*Pinza uye wodzvanya mudziyo weplugging muburi rekupfuura.
*Ibate zvakachengeteka panzvimbo kweinenge maminetsi gumi usati waburitsa kumanikidza.
* Pukuta chero yakawandisa yekuzadza zvinhu kubva kutenderedza kuburikidza nemakomba kana yapera.
* Tarisa nemumakomba nguva nenguva kuti uone kuti haana kubuda kana kukuvadzwa.
*Dzokorora maitiro sezvinodiwa kuburikidza nemaburi ehukuru hwakasiyana.
Chinonyanya kushandiswa pakushandisa kubatanidza magetsi. Saizi idiki pane mamwe maburi anoshandisa solder components. Maburi anoshandiswa kugadzira zvinhu zvekutengesa achava makuru. MuPCB yekugadzira tekinoroji, kuchera idanho rakakosha, uye munhu haagone kusava nehanya nazvo. Bhodhi redunhu harigone kupa kubatana kwemagetsi uye yakagadziriswa mudziyo mabasa pasina kudhirowa zvinodiwa kuburikidza nemaburi mundiro yemhangura-yakapfeka. Kana kudhirowa kwakashata kuchikonzera chero dambudziko mukuita kuburikidza nemakomba, zvinogona kukanganisa kushandiswa kwechigadzirwa, kana bhodhi rose richaraswa, saka nzira yekuchera yakakosha.
Nzira dzekuchera dze vias
Pane kunyanya nzira mbiri dzekuchera dze vias: mechanical drilling uye laser drilling.
Mechanical kuchera kuburikidza nemakomba inzira yakakosha muPCB indasitiri. Kuburikidza nemaburi, kana nemaburi, kune maburi ecylindrical ayo anopfuura nepakati pebhodhi uye anobatanidza rimwe divi kune rimwe. Iwo anoshandiswa pakugadzika zvikamu uye kubatanidza magetsi emagetsi pakati pezvikamu. Mechanical kuchera kuburikidza nemaburi kunosanganisira kushandisa maturusi ehunyanzvi akadai sezvibooresa, reamers, uye countersink kugadzira maburi aya nemazvo uye nemazvo. Iyi nzira inogona kuitwa nemaoko kana nemichina yemagetsi zvichienderana nekuoma kwekugadzira uye zvinodiwa zvekugadzira. Hunhu hwekuchera kwemakanika hunokanganisa zvakananga kuita kwechigadzirwa uye kuvimbika, saka danho iri rinofanirwa kuitwa nemazvo nguva dzese. Nekuchengetedza zviyero zvepamusoro kuburikidza nekuchera kwemagetsi, kuburikidza nemakomba anogona kuitwa zvakavimbika uye zvakarurama kuti ave nechokwadi chekubatanidza magetsi.
Laser kuchera
Mechanical kuchera kuburikidza nemakomba inzira yakakosha muPCB indasitiri. Kuburikidza nemaburi, kana nemaburi, kune maburi ecylindrical ayo anopfuura nepakati pebhodhi uye anobatanidza rimwe divi kune rimwe. Iwo anoshandiswa pakugadzika zvikamu uye kubatanidza magetsi emagetsi pakati pezvikamu. Mechanical kuchera kuburikidza nemaburi kunosanganisira kushandisa maturusi ehunyanzvi akadai sezvibooresa, reamers, uye countersink kugadzira maburi aya nemazvo uye nemazvo. Iyi nzira inogona kuitwa nemaoko kana nemichina yemagetsi zvichienderana nekuoma kwekugadzira uye zvinodiwa zvekugadzira. Hunhu hwekuchera kwemakanika hunokanganisa zvakananga kuita kwechigadzirwa uye kuvimbika, saka danho iri rinofanirwa kuitwa nemazvo nguva dzese. Nekuchengetedza zviyero zvepamusoro kuburikidza nekuchera kwemagetsi, kuburikidza nemakomba anogona kuitwa zvakavimbika uye zvakarurama kuti ave nechokwadi chekubatanidza magetsi.
Chengetedzo yePCB kuburikidza nedhizaini
Iva nechokwadi chokuti vias haisi pedyo zvakanyanya kune zvikamu kana zvimwe vias.
Vias chikamu chakakosha chePCB dhizaini uye inofanira kuiswa nekuchenjerera kuti ive nechokwadi chekuti haikonzeri chero kukanganiswa nezvimwe zvinoriumba kana vias. Kana vias vari pedyo zvikuru, pane ngozi pfupi-circuiting, izvo zvinogona kukuvadza zvakanyanya PCB uye zvose zvakabatana zvinoriumba. Maererano neruzivo rweViasion, kuderedza njodzi iyi, vias inofanira kuiswa kanenge 0.1 masendimita kubva kune zvikamu, uye vias hazvifaniri kuiswa pedyo ne 0.05 inches kune mumwe nemumwe.
Ita shuwa kuti vias haipindirane nematehwe kana mapedhi pazvikamu zvakavakidzana.
Paunenge uchigadzira vias kune redunhu bhodhi, zvakakosha kuti uve nechokwadi chekuti vias hazvipindire chero zvisaririra kana mapedhi pane mamwe akaturikidzana. Imhaka yekuti vias inogona kukonzeresa zvipfupi zvemagetsi, zvichitungamira kune kusashanda zvakanaka kwehurongwa uye kutadza. Sezvinokurudzirwa nemainjiniya edu, vias zvinofanirwa kuiswa zvine hungwaru munzvimbo dzisina anoteedzana kana mapedhi kudzivirira njodzi iyi. Mukuwedzera, ichaita kuti vias zvisakanganisa zvimwe zvinhu paPCB.
Funga nezvezvazvino uye tembiricha ratings paunenge uchigadzira vias.
Ita shuwa kuti vias vane yakanaka yemhangura plating yezvino kutakura kugona.
kusungirirwa kwevias kunofanirwa kutariswa nemazvo, kudzivirira nzvimbo uko nzira inogona kuve yakaoma kana isingaite.
Nzwisisa zvinodiwa zvekugadzira usati wasarudza kuburikidza nehukuru uye marudzi.
Gara uchiisa vias ingangoita 0.3mm kubva kubhodhi kumucheto kunze kwekunge zvataurwa neimwe nzira.
Kana vias akaiswa pedyo zvakanyanya kune mumwe kune mumwe, anogona kukuvadza bhodhi kana yadhirowa kana kufambiswa.
Zvinokosha kufunga chikamu reshiyo vias panguva magadzirirwo, sezvo vias ane yakakwirira chikamu reshiyo inogona kukanganisa chiratidzo kuvimbika uye kupisa kupera.
Iva nechokwadi vias vane zvakakwana clearances kune dzimwe vias, zvinoriumba uye bhodhi mipendero sezvo por magadzirirwo mitemo.
Kana vias akaiswa ari maviri kana akawanda akakosha manhamba, zvakakosha kuaparadzira zvakaenzana kuitira kuita kwakaringana.
Iva nehanya vias inogona kunge iri pedyo zvakanyanya nemuviri wechikamu, sezvo izvi zvinogona kukonzera kukanganisa nezviratidzo zvinopfuura.
Kufunga vias pedyo nendege.
Dzinofanirwa kuiswa nekuchenjerera kuderedza chiratidzo uye ruzha rwemagetsi.
Funga kuisa vias muchikamu chimwechete sezviratidzo pazvinogoneka, sezvo izvi zvinoderedza mari yevias uye zvinovandudza kushanda.
Deredzai vias count kuderedza dhizaini yakaoma uye mutengo.
Mechanical maitiro ePCB kuburikidza negomba
Kuburikidza-gomba dhayamita
Iyo dhayamita yemaburi inofanira kudarika dhayamita yepini yeplug-in chikamu uye kuchengeta imwe margin. Iyo shoma dhayamita iyo wiring inogona kusvika kuburikidza nemakomba inogumira nekuchera uye electroplating tekinoroji. Iyo diki kuburikidza negomba dhayamita, nzvimbo diki muPCB, iyo diki iyo parasitic capacitance, uye zvirinani kuita kwepamusoro-frequency kuita, asi mutengo unozokwira.
Kuburikidza neburi padhi
Iyo padhi inoona kubatanidzwa kwemagetsi pakati pe electroplating yemukati musara weburi-ne-buri uye wiring pane yakadhindwa redunhu repamusoro pebhodhi (kana mukati).
Capacitance of through buri
ach kuburikidza neburi ine parasitic capacitance pasi. Iyo kuburikidza-gomba parasitic capacitance inononoka kana kushatisa kukwira kumucheto kwedhijitari chiratidzo, iyo isingafadzi kune yakakwirira-frequency chiratidzo chekufambisa. Ndiyo huru yakashata mhedzisiro ye kuburikidza-gomba parasitic capacitance. Nekudaro, mumamiriro ezvinhu akajairwa, kukanganiswa kwe-buri-hole parasitic capacitance kupfupika uye kunogona kuve kushomeka - dhayamita diki yeburi neburi, idiki yeparasitic capacitance.
Inductance of through buri
Kuburikidza nemakomba anowanzo shandiswa muPCB kubatanidza zvinhu zvemagetsi, asi anogona zvakare kuve neasingatarisirwe divi mhedzisiro: inductance.
Inductance inzvimbo yekuburikidza nemakomba anoitika kana magetsi achiyerera mukati mawo uye anopinza magineti. Iyi magineti inogona kukonzeresa kuvhiringa kumwe kuburikidza ne-gomba kubatanidza, zvichikonzera kurasikirwa kwechiratidzo kana kukanganisa. Kana isu tichida kudzikisira izvi zvinokonzeresa, zvakakosha kuti unzwisise kuti inductance inoshanda sei uye kuti ndeapi matanho ekugadzira aungatora kuti udzikise maitiro ayo paPCBs ako.
Iyo dhayamita yemaburi inofanira kudarika dhayamita yepini yeplug-in chikamu uye kuchengeta imwe margin. Iyo shoma dhayamita iyo wiring inogona kusvika kuburikidza nemakomba inogumira nekuchera uye electroplating tekinoroji. Iyo diki kuburikidza negomba dhayamita, nzvimbo diki muPCB, iyo diki iyo parasitic capacitance, uye zvirinani kuita kwepamusoro-frequency kuita, asi mutengo unozokwira.
Nei PCB vias ichifanira kubaiwa?
Hezvino zvimwe zvikonzero nei PCB vias ichifanira kubaiwa, muchidimbu neShenzhen Rich Full Joy Electronics Co., Ltd :
Shenzhen Yakapfuma Yakazara Mufaro Electronics Co., Ltd:
PCB vias kupa muviri Link kuti gomo zvinoriumba uye batanidza akasiyana PCB akaturikidzana, nokudaro kugonesa bhodhi kuita chinangwa chayo basa efficiently.PCB vias dzinoshandiswawo kuvandudza PCB kuti kupisa kuita uye kuderedza chiratidzo kurasikirwa. Sezvo PCB vias kuitisa magetsi kubva mumwe PCB akaturikidzana kune mumwe, vanofanira plugged kuti vave nechokwadi chokuita siyana akaturikidzana pamusoro PCB.Lastly, PCB vias kubatsira kudzivirira matunhu mapfupi nokunzvenga kuonana nemamwe akafumura zvinoriumba pamusoro PCB.Naizvozvo, PCB vias inofanira plugged kudzivirira chero magetsi malfunctions kana kukuvadzwa PCB.
Summary
Muchidimbu, PCB vias zvikamu zvakakosha zvePCBs, zvichivabvumira kuti vafambise masaini zvinobudirira pakati pezvikamu uye kubatanidza zvakasiyana bhodhi zvinhu. Nekunzwisisa marudzi avo akasiyana uye zvinangwa, unogona kuve nechokwadi chekuti PCB dhizaini yako yakagadziridzwa kuita uye kuvimbika.
Shenzhen Rui Zhi Xin Feng Electronics Co., Ltd inopa yakazara PCB kugadzira, kutsvagisa chikamu, PCB gungano, uye magetsi ekugadzira masevhisi. Neanopfuura makore makumi maviri echiitiko, takagara tichiendesa emhando yepamusoro PCBA mhinduro pamitengo yemakwikwi kune vanopfuura zviuru zvitanhatu zvevatengi vepasirese. Kambani yedu yakasimbiswa neakasiyana indasitiri zvitupa uye UL mvumo. Zvigadzirwa zvedu zvese zvinoongororwa 100% E-yedzo, AOI, uye X-RAY kuti isangane nepamusoro-soro indasitiri zviyero. Isu takazvipira kupa yakasarudzika mhando uye kuvimbika mune yega PCB gungano chirongwa.
PCB Laser Drilling PCB Mechanical Drilling
Laser Drilling yePCBs PCB Drilling
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PCB Laser Drilling Technology PCB Drilling process
Drilling process Sumo:
1. Pinning, Drilling, uye Hole Reading
Chinangwa:Kuboora-maburi pamusoro pePCB kumisa kubatanidza kwemagetsi pakati pezvikamu zvakasiyana.
Nokushandisa okumusoro mapini kuchera uye rezasi mapini pagomba kuverenga, muitiro uyu nechokwadi kusikwa vias kuti kufambisa interlayer redunhu kubatana pamusoro rakadhindwa redunhu bhodhi (PCB).
CNC Drilling:
Chinangwa:Kuboora-maburi pamusoro pePCB kumisa kubatanidza kwemagetsi pakati pezvikamu zvakasiyana.
Zvishandiso Zvinokosha:
Drill Bits:Inoumbwa ne tungsten carbide, cobalt, uye organic adhesives.
Kavha Plate:Kunyanya aluminium, inoshandiswa ku drill bit positioning, kupisa kupisa, kuderedza maburrs, uye kudzivirira kukuvara kwetsoka panguva yekuita.
Backing Plate:Kunyanya bhodhi rinosanganiswa, rinoshandiswa kuchengetedza tafura yemuchina wekuchera, kudzivirira kubuda maburrs, kuderedza tembiricha yekuchera, uye yakachena masara eresin kubva kune drill bit nyere.
Nekukwevera yakakwirira-chaiyo CNC kuchera, maitiro aya anovimbisa kwakaringana uye akavimbika interlayer kubatana pamabhodhi edunhu akadhindwa (PCBs).
Hole Inspection:
Chinangwa:Kuona kuti hapana zvisizvo zvakadai sekuchera zvakanyanya, kuchera pasi, makomba akavharika, makomba akakura, kana maburi mashoma mushure mekuchera.
Nekunyatsoongorora gomba, tinovimbisa kunaka uye kuenderana kweimwe neimwe kuburikidza, kuve nechokwadi chekushanda kwemagetsi uye kuvimbika kweiyo yakadhindwa redunhu board (PCB).