Chii chinonzi gomba-mu-pedhi? Gomba mudhisiki rinoreva gomba riri padhi, iyo padhi yeSMD dhisiki, kazhinji inoreva 0603 uye pamusoro peSMD neBGA pads, inowanzonzi VIP (kuburikidza nepad). Plug-in maburi ari padhi haigone kunzi gomba mudhisiki, nekuti maburi eplug-in mupadhi anoda kuisa zvikamu kuti zvitengeswe, ese eplug-in pin pads ane maburi.
Nekuvandudzwa kwezvigadzirwa zvemagetsi kuti zvive chiedza, zvitete, zviduku, bhodhi rePCB rinosundidzirwa kune-high-density, yakaoma kukudziridza, saka ukuru hwezvikamu zvishoma nezvishoma zvishoma. Semuenzaniso: BGA zvikamu zvepakeji idiki, iyo pini nzvimbo inova diki. Pini spacing idiki, ipapo pasuru iri mukati mepini yakaoma kubuda mumutsara, unofanirwa kushandura dhizaini yeperforation kunze kwemutsara.
MuBGA pini spacing idiki, haigone fan kunze, kune nzira imwe chete yekugadzirisa dambudziko, iri kuridza gomba mudhisiki. Kune zvakare BGA kumashure kuti aise sefa capacitor, apo iyo BGA pini kupfuura kumashure kwesefa capacitor haigone kunzvenga pini fan-out maburi, kungogamuchira sefa capacitance yemakomba epadhi. Naizvozvo, kune marudzi maviri emakomba mudhisiki, imwe iri paBGA pad, uye imwe iri padhi rechigamba.
Izvozvi zvinokurudzirwa kuedza kusagadzira gomba-mu-disk kana nzvimbo yacho yakakwana, sezvo mari yekugadzira gomba-in-disk yakakwirira kwazvo uye nguva yekufambisa yekugadzira yakareba.
Dhizaini yegomba mu diski:
1, Hapana chikonzero chekugadzira gomba mudhisiki;
Pamberi pePCB routing, zvinodikanwa kuita fan-out basa kutanga kufambisa yemukati layer routing. Kune fan-kunze kweBGA mhando zvishandiso, iyo
Huwandu hwepini hwakanyanya kukwirira, asi BGA nzvimbo inofanirwa kuve pakati pemapadhi ane maburi e fanout. Nezve BGA Fanout Settings
parameters, 0.15-0.2mm vias, 3-4 mil mutsetse upamhi, uye 0.3-0.4mm gomba zvishwe, saka BGA pini spacing inoda kuva hombe.
Iyo fan kunze inogona kuve yakajairika chete kana iri pasi pe0.35mm.
2.Kuda kugadzira gomba mu diski;
Pamberi peBGA fanout, tinoda kuseta dhayamita yeaperture yemaburi, zvikasadaro dhayamita yeaperture haina kukodzera fanout inoshanda, kana
Kana fan-out mhedzisiro isiri yakajairika, saka fan-out mhedzisiro haina kujairika. Kana iyo BGA pini spacing idiki kwazvo kuti isaite fan kunze, zvinodikanwa kugadzira gomba mudhisiki, uye nzira waya kubva mukati memukati kana kubva pakati pedhisiki.
Underlay kurongeka kweBGA zvishandiso.
Kugadzira nzira yegomba mu diski:
1. BGA pamusoro pegomba rinowanzotsanangurwa segomba mudhisiki, unoda kuvhara resin, resin plating cap kuti ubatsire kutengesa mutengi.
Kunze kwekunge mutengi akumbira kuti maburi ari pamusoro peBGA asavharwe.
2. Kunze kweBGA, apo mutengi anoda kuti maburi ose avharwe ne resin, maburi ari pamusoro pechigamba anotsanangurwawo semakomba mu diski.
Gomba mune dhisiki tsananguro;
Nzira yekugadzira;
Dhoya gomba mudhisiki → Kurovera gomba mhangura → Kurovera resin → Kurapa → Kupukuta → Kudzikisa mhangura → Kubvisa rabha yakafashukira → Kuchera mamwe maburi asiri edhisiki (kazhinji anoumba maburi uye maburi emidziyo) → Kuputira gomba mhangura uye VCP pamusoro pemhangura → Yakajairika maitiro ...…
Plug-hole process kugona;
Mufananidzo wemufananidzo wegomba mu diski:
1. BGA pagomba mudhisiki: Kazhinji, zvishandiso zvine mapini mashoma hazvidi maburi mutireyi yemapini. Nekudaro, kune maBGA ane mapini mazhinji, iyo vias yemapini inotora nzvimbo mu wiring. Kana vias zvakagadzirirwa semakomba ari tireyi uye makomba vari zvibhakera ari BGA Mapedhi, ipapo nzvimbo inogona kuchengeterwa kuti wiring. Makomba ari mutireyi akagadzirwa apo nzvimbo yepini iri diki kwazvo kuti isafambise waya, uye wiring inofambiswa kubva kune dzimwe nzvimbo.
2. Gomba-mu-pani pamusoro sefa capacitors: Kana vias zhinji kunodiwa kuti routing ari BGA mudziyo, zvakaoma kudzivisa vias ari kuseri BGA mudziyo apo sefa capacitors vari plugged. Naizvozvo, iyo vias inoroverwa pamusoro pemapedhi uye inova gomba-mu-dhisiki.
3. Usaite gomba mune dhisiki process: gomba mudhisiki rinoda resin plug gomba, uye ipapo plug resin pamusoro pemhangura yemhangura inokodzera welding. Kana gomba ari dhisiki haana kuita gomba ari dhisiki muitiro, regai kuita mugumisiro plugging mugomba idiki nomoto nharaunda, gomba yakavanzwa tini mabhesi kana kuputika mafuta chiitiko, zvichiita welding yenhema.
4.Ita in-dish hole process: BGA mapedhi idiki seyakagadziridzwa mu-dish makomba, uye pane chaizvo hapana soldering nzvimbo yakasara. Naizvozvo, maburi e-mu-dish anofanirwa kuvharwa neresin, uye electroplating inoshandiswa kuzadza maburi flat, izvo zvinoita kuti zvigadziriswe uye hazvizokonzerese kushata.
