Mhangura ndeimwe yesimbi dzinoshandiswa zvakanyanya pasi rose. Hunhu hwayo hwakasiyana hunoita kuti ikwanise kushandiswa zvakasiyana-siyana, kusanganisira kufambisa magetsi. Mhangura inoshandiswa zvakanyanya mumaindasitiri emagetsi neemagetsi, uye mhangura dzesimbi zvinhu zvakakosha pakugadzira mabhodhi edunhu akadhindwa (PCBs). Pakati pemhando dzakasiyana dzemhangura dzesimbi dzinoshandiswa mukugadzira maPCB, mhangura yeED ndiyo inonyanya kushandiswa.
Foil yemhangura yeED inogadzirwa neelectro-deposition (ED), inova nzira inosanganisira kuisa maatomu emhangura pamusoro pesimbi kuburikidza nemagetsi. Foil yemhangura inobuda yakachena kwazvo, yakafanana, uye ine hunhu hwakanaka hwemakanika uye magetsi.
Chimwe chezvakanakira zvikuru zve ED copper foil ndiko kufanana kwayo. Maitiro e electro-deposition anoita kuti ukobvu hwe copper foil huenderane nepamusoro payo yese, izvo zvakakosha mukugadzirwa kwePCB. Ukobvu hwe copper foil hunowanzo kutsanangurwa muma microns, uye hunogona kubva pama microns mashoma kusvika kumakumi ema microns, zvichienderana nekushandiswa. Ukobvu hwe copper foil hunosarudza conductivity yayo yemagetsi, uye conductivity ye copper foil inowanzo kuve yakakwira.
Pamusoro pekufanana kwayo, ED copper foil ine hunhu hwakanaka hwemakanika. Inochinjika zvikuru uye inogona kukotama, kuumbwa, uye kugadzirwa zviri nyore kuti ikwane magadzirirwo ePCB. Kuchinjika uku kunoita kuti ive chinhu chakanakira kugadzira maPCB ane geometries dzakaoma uye magadzirirwo akaomarara. Uyezve, kugona kwayo kuchinjika kunoita kuti ikwanise kumira kukotama nekuchinjika kakawanda pasina kutsemuka kana kutyoka.
Chimwe chinhu chakakosha che ED copper foil ndiko kufambiswa kwemagetsi kwayo. Copper ndeimwe yesimbi dzinofambisa magetsi zvakanyanya, uye ED copper foil ine kufambiswa kwemagetsi kunopfuura 5×10^7 S/m. Kufambiswa kwemagetsi uku kwakakosha mukugadzirwa kwePCBs, uko kunogonesa kutapurirana kwezviratidzo zvemagetsi pakati pezvikamu. Uyezve, kuramba kwemagetsi kushoma kwe copper foil kunoderedza kurasikirwa kwesimba rezviratidzo, izvo zvakakosha mukushandiswa kwekumhanya kwakanyanya uye kwema frequency akakwira.
Foiri yemhangura yeED inodzivirirawo zvakanyanya kuoxidation uye ngura. Mhangura inosangana neokisijeni mumhepo kuti igadzire chidimbu chakatetepa checopper oxide pamusoro payo, izvo zvinogona kukanganisa kufambisa kwayo magetsi. Zvisinei, foiri yemhangura yeED inowanzo putirwa nezvinhu zvinodzivirira, zvakaita setin kana nickel, kudzivirira oxidation uye kuvandudza kugona kwayo kusunganidzwa.
Mukupedzisa, ED copper foil chinhu chinoshandiswa zvakasiyana-siyana uye chakakosha mukugadzirwa kwePCBs. Kufanana kwayo, kuchinjika kwayo, kufambisa magetsi zvakanyanya, uye kuramba kuoxidation uye ngura zvinoita kuti ive chinhu chakanakira kugadzira maPCB ane geometries dzakaoma uye zvinodiwa nekushanda kwepamusoro. Nekukura kuri kuita kudiwa kwemagetsi anomhanya uye ane frequency yakakwira, kukosha kweED copper foil kuchawedzera mumakore anotevera.
Nguva yekutumira: Kukadzi-17-2023