Chikonzero chePCB chemukati chemukati wedunhu

Chikonzero che PCB redunhu remukati pfupi

Kukanganisa kwezvinhu zvakasvibirira pane yemukati pfupi-redunhu:

Iyo yemhando kugadzikana kweiyo multilayer pcb zvinhu ndizvo zvakakoshesa kukanganisa kumisikidza kurongeka kwemukati mekutenderera. Iko kukanganisa kwekupisa kwekuwedzera kwekuwedzera kweiyo substrate uye yemhangura foil pane yemukati layer ye multilayer pcb inofanirwawo kutariswa. Kubva pakuongororwa kwenzvimbo dzeiyo substrate yakashandiswa, laminates ane mapolymers, ayo anoshandura chimiro chikuru pane imwe tembiricha, inozivikanwa segirazi tembiricha tembiricha (TG kukosha). Girazi tembiricha yekuchinja ndiyo hunhu hwenhamba huru ye polymer, padhuze nekupisa kwekuwedzera kwekukwana, ndicho chinonyanya kukosha chimiro che laminate. Mukuenzanisa kwezvinhu zviviri zvinowanzoshandiswa, tembiricha yekuchinja tembiricha ye epoxy girazi jira laminate uye polyimide ndeye Tg120 ℃ uye 230 ℃ zvichiteerana. Pasi pemamiriro e150 ℃, iyo yakasarudzika yekupisa yekuwedzera kweiyo epoxy girazi jira laminate iri pamusoro pe0.01in / mukati, nepo iko kwekuwedzera kwekushisa kwekuwedzera kwepolyimide kuri 0.001in / mukati chete.

ipcb

Zvinoenderana nehunyanzvi hwekuita data, iyo yekupisa yekuwedzera coefficient yemalaminates mu X uye Y mafambiro ari 12-16ppm / ℃ yekuwedzera kwega kwe1 ℃, uye iyo yekupisa yekuwedzera coefficient munzira Z ndeye 100-200ppm / ℃, iyo inowedzera neakara yehukuru kupfuura iyo mune X uye Y mafambiro. Nekudaro, kana tembiricha ikapfuura 100 ℃, zvinoonekwa kuti z-axis kuwedzera pakati pemaminiti nema pores haienderane uye mutsauko unova mukuru. Electroplated kuburikidza nemakomba ine yakaderera yakasarudzika yekuwedzera mwero kupfuura yakatenderedza laminates. Sezvo kuwedzera kwekushisa kwe laminate kuri kukurumidza kupfuura kweiyo pore, izvi zvinoreva kuti iyo pore yakatambanudzwa munzira yekushanduka kweiyo laminate. Aya mamiriro ekushushikana anounza kushushikana kwakasimba mumuviri-wegomba. Kana tembiricha ikawedzera, kusagadzikana kunetseka kucharamba kuchiwedzera. Kana kushushikana kukapfuura simba rekutsemuka kweiyo-yegomba yekupfekedza, kupfeka kunotyoka. Panguva imwecheteyo, iyo yakakwira yekushisa yekuwedzera mwero weiyo laminate inoita kuti kushushikana kwetambo yemukati nepadhi kuwedzere zviri pachena, zvichikonzera kuputika kwetambo nepad, zvichikonzera kupfupika-denderedzwa reiyo yemukati rukoko rweyakawanda-yakatenderera PCB . Naizvozvo, mukugadzirwa kweBGA uye imwe yepamusoro-dhizaini kurongedza chimiro chePCB mbishi zvinhu zvehunyanzvi zvinodiwa, yakakosha ongororo yekuongorora inofanirwa kuitwa, kusarudzwa kweiyo substrate uye mhangura foil yekupisa yekuwedzera yekuwedzera inofanirwa kunge ichienderana.

Chechipiri, kufurirwa kwenzira chaiyo yekumisikidza system pane yemukati pfupi wedunhu

Nzvimbo inodiwa muchizvarwa chemufirimu, giraidhi girafu, lamination, lamination uye kuchera, uye fomu yenzvimbo yenzvimbo inoda kuongororwa uye kuongororwa zvakanyatsonaka. Izvi zvinogadzirwa zvine semi-zvakapedzwa zvinoda kuiswa zvakanaka zvinounza nhevedzano yezvinetso zvehunyanzvi nekuda kwekusiyana kwekumisikidza kurongeka. Iko kushomeka kushoma kunozotungamira kune ipfupi-redunhu chiitiko mukati mechikamu chemukati cheyakawandisa-pcb pcb. Ndeipi nzira yekumira inofanirwa kusarudzwa zvinoenderana nekururama, kushanda pamwe nekubudirira kwenzvimbo yacho.

Zvitatu, zvinoitika zvemukati etching mhando pane yemukati pfupi wedunhu

Lining etching maitiro ari nyore kuburitsa yakasara mhangura etching ichibuda kusvika kumagumo epoindi, iyo yakasara mhangura dzimwe nguva idiki kwazvo, kana zvisiri nemaziso tester inoshandiswa kuona intuitive, uye zvinonetsa kuwana neisina kupfeka ziso chiratidzo, ichaunzwa kuhurongwa hwekumisikidza, iyo yakasara yemhangura kudzvinyirira kune yemukati yeiyo multilayer pcb, nekuda kweiyo yemukati dhayeti density yakanyanya kukwirira, nzira iri nyore yekutora yakasara mhangura yakagashirwa multilayer pcb lining inokonzerwa nepfupi dunhu pakati pezviviri waya.

4.Kufurira kwekumonera maitiro parameter pane yemukati pfupi wedunhu

Iyo yemukati ndiro yeplate inofanirwa kuve yakamisikidzwa nekushandisa iyo yekumisikidza pini kana uchimomesa. Kana iko kumanikidza kunoshandiswa pakuisa bhodhi kusiri yunifomu, nzvimbo yekumira yeplate yemukati ndiro icharemara, kushushikana kwesheya uye kusara kwekushushikana kunokonzerwa nekumanikidza kwakatorwa nekudzvanya zvakare kwakakura, uye denderedzwa shrinkage deformation uye zvimwe zvikonzero zvichaita kukonzera rukoko rwemukati-rakawanda-pcb pcb kuburitsa pfupi dunhu uye chinyorwa.

Shanu, zvinoitika kuchera yepamusoro pamusoro yomukati pfupi redunhu

1. Hole nzvimbo yekukanganisa kuongorora

Kuti uwane mhando yepamusoro uye yakakwirira kuvimbika kwemagetsi kubatana, mubatanidzwa uripo pakati nepadhi uye waya mushure mekuchera unofanirwa kuchengetwa kanenge 50μm. Kuchengetedza hupamhi hwakadai, chinzvimbo chegomba rekuchera chinofanira kuve chakanyatsojeka, kuburitsa kukanganisa kushoma kana kuenzana nezvinodiwa zvehunyanzvi zvekushivirira kwepadenga kwakarongwa nehurongwa. Asi gomba chinzvimbo chikanganiso chekuchera gomba chinonyanya kutemerwa neakarurama ekuchera muchina, iyo geometry yekuboora zvishoma, hunhu hwevhavha nepad uye tekinoroji parameter. Iyo empirical ongororo yakaunganidzwa kubva kune chaiko kugadzirwa maitiro inokonzereswa neane maficha: iyo amplitude inokonzerwa nekudengenyeka kwemuchina wekuboora muchina kune chaiko chinzvimbo chegomba, kutsauka kwesimbi yekumonera, iko kutsvedza kunokonzerwa nediki inopinda iyo substrate poindi , uye iyo inokombama deformation inokonzerwa negirazi fiber kuramba uye kuchera cuttings mushure mechinguva chinopinda muiyo substrate. Izvi zvinhu zvinokonzeresa mukati mehomwe nzvimbo kutsauka uye mukana wepfupi wedunhu.

2. Zvinoenderana nechinzvimbo chekutsauka chakagadzirwa pamusoro, kuitira kugadzirisa uye kubvisa mukana wekukanganisa kwakanyanya, zvinokurudzirwa kutora nzira yekuchera nzira, iyo inogona kudzikisa zvakanyanya mhedzisiro yekuchera cuttings kubviswa uye iyo tembiricha inomuka. Naizvozvo, zvinodikanwa kuti uchinje iyo diki jometri (nzvimbo inochinjika-chikamu, ukobvu hwepakati, taper, chip groove Angle, chip groove uye kureba kumucheto bhendi reshiyo, nezvimwewo) kuwedzera kuomarara, uye gomba nzvimbo kunyatso zvakanyanya kuvandudzwa. Panguva imwecheteyo, zvinodikanwa kuti usarudze nenzira yakafanira ndiro yekuvhara uye yekuchera maitiro parameter kuona kuti iko kunyatso kuchera gomba mukati mechikamu cheichi chiitiko. Pamusoro pezvivimbiso zviri pamusoro izvi, zvikonzero zvekunze zvinofanirwa kunge zviri izvo zvekutarisa. Kana chinzvimbo chemukati chisiri chechokwadi, kana kuchera gomba kutsauka, zvakare tungamira kune yemukati wedunhu kana pfupi pfupi.