4 Layer ENIG Impedance Control Heavy Copper PCB
Chengetedzo Yeinjiniya Dhizaini YeHeavy Copper PCB
Nekuvandudzwa kwetekinoroji yemagetsi, huwandu hwePCB hunowedzera uye hudiki, density iri kuramba ichikwira, uye maPCB akaturikidzana achiwedzera, saka, inoda PCB pakurongeka kwakabatana, kugona kwekurwisa-kupindira, maitiro uye kudiwa kwekugadzira kwakakwira. uye nepamusoro, sezviri mukati meinjiniya dhizaini zvakanyanya, kunyanya kune inorema mhangura PCB manufacturability, craft workability uye kuvimbika kwechigadzirwa engineering dhizaini, inofanirwa kujairana neyakajairwa dhizaini uye kusangana nezvinodiwa zvekugadzira maitiro, kugadzira iyo yakagadzirwa. chigadzirwa zvakanaka.
1. Kuvandudza kufanana uye symmetry yemukati wemukati mhangura kuisa
(1) Nekuda kweiyo superposition mhedzisiro yeinner layer solder pad uye kudzikiswa kwekuyerera kweresin, iyo inorema yemhangura PCB ichave yakakora munzvimbo ine yakasara yakasara yemhangura kupfuura munzvimbo ine yakaderera yakasara yemhangura mushure mekucheneswa, zvichikonzera kusaenzana. Ukobvu hwendiro uye kukanganisa chigamba chinotevera uye kusangana.
(2) Nekuti iyo inorema yemhangura PCB yakakora, iyo CTE yemhangura inosiyana zvakanyanya kubva kune iyo substrate, uye deformation musiyano wakakura mushure mekumanikidza uye kupisa.Iyo yemukati yemukati yekugovera mhangura haina symmetrical, uye warpage yechigadzirwa iri nyore kuitika.
Matambudziko ari pamusoro apa anofanirwa kuvandudzwa mukugadzirwa kwechigadzirwa, muchimiro chekusakanganisa basa nekushanda kwechigadzirwa, mukati memukati wenzvimbo isina mhangura sezvinobvira.Dhizaini yemhangura point uye copper block, kana kushandura iyo hombe yemhangura kumusoro kune copper point yekuisa, optimize routing, ita density yayo yunifomu, yakanaka kuenderana, ita iyo yese marongerwo ebhodhi symmetrical uye yakanaka.
2. Kuvandudza chiyero chemhangura chakasara chemukati wemukati
Nekuwedzera kwemhangura yemhangura, gomba remutsara rakadzika.Panyaya yemhangura imwechete yakasara, huwandu hwekuzadza resin hunoda kuwedzera, saka zvinodikanwa kushandisa akawanda semi-akaporeswa mapepa kusangana neglue kuzadza.Kana iyo resin iri shoma, zviri nyore kutungamira mukushaikwa kweglue lamination uye kufanana kwehupamhi hweplate.
Iyo yakaderera yakasara yemhangura chiyero inoda huwandu hukuru hweresin kuzadza, uye resin kufamba kunogumira.Pasi pechiito chekumanikidza, kuwanda kweiyo dielectric layer pakati penzvimbo yemhangura pepa, nzvimbo yemutsara uye substrate nzvimbo ine mutsauko mukuru (hupamhi hweiyo dielectric layer pakati pemitsara ndiyo thinnest), iyo iri nyore kutungamira kune. kukundikana kweHI-POT.
Naizvozvo, iyo mhangura inosara mwero inofanirwa kuvandudzwa zvakanyanya sezvinobvira mukugadzirwa kweinorema mhangura PCB engineering, kuitira kuti kuderedze kudiwa kwekuzadza glue, kuderedza njodzi yekuvimbika yekusagutsikana kwekuzadza glue uye yakatetepa yepakati layer.Semuenzaniso, mapoinzi emhangura uye dhizaini yemhangura inoiswa munzvimbo isina mhangura.
3. Wedzera upamhi hwemutsara uye mutsara wemutsara
Kune inorema mhangura PCBs, kuwedzera mutsara wakafara spacing haingobatsiri kudzikisira kuoma kwe etching kugadzirisa, asi zvakare ine kuvandudzwa kukuru mukuzadza glue.Iyo girazi faibha jira rinozadza nediki spacing ishoma, uye girazi faibha jira rinozadza nepakati hombe rakawanda.Iyo yakakura nzvimbo inogona kuderedza kudzvanywa kweyakachena glue kuzadza.
4. Gadzirisa yemukati layer padhi dhizaini
Kune inorema yemhangura PCB, nekuti ukobvu hwemhangura hwakakora, pamwe nepamusoro pematanho, mhangura yanga iri muhupamhi hukuru, pakudhiraivha, kukweshera kwechibooreso chiri mubhodhi kwenguva yakareba kuri nyore kugadzira chibooreso chakapfeka. , uye zvino zvinokanganisa kunaka kwemadziro egomba, uye zvinowedzera kukanganisa kuvimbika kwechigadzirwa.Nokudaro, muchikamu chekugadzira, mukati memukati wepadhi isina kushanda inofanira kugadzirwa sezvishoma sezvinobvira, uye kwete kupfuura 4 zvidimbu zvinokurudzirwa.
Kana dhizaini ichibvumira, mapedhi emukati anofanira kugadzirwa akakura sezvinobvira.Madiki mapedhi achaita kuti kushushikana kukuru mubato rekuchera, uye kupisa conduction kumhanya kunokurumidza mukugadzirisa, izvo zviri nyore kutungamira kune mhangura Angle kuputika mumapadhi.Wedzera chinhambwe pakati peiyo yemukati layer yakazvimirira padhi uye gomba madziro sekubvumidza kwedhizaini.Izvi zvinogona kuwedzera iyo inoshanda yakachengeteka nzvimbo pakati pegomba mhangura uye yemukati layer padhi, uye kuderedza matambudziko anokonzerwa negomba remadziro mhando, senge micro-pfupi, kutadza kweCAF uye zvichingodaro.
