HDI PCB kugadzira mune otomatiki PCB fekitori --- OSP pamusoro pekupedzisira
Zvakatumirwa:Kukadzi 03, 2023
Categories: Blogs
Tags: pcb,pcba,pcb musangano,pcb kugadzira, pcb pamusoro kupera,HDI
OSP inomirira Organic Solderability Preservative, inonziwo redunhu bhodhi organic coating nevagadziri vePCB, yakakurumbira Yakadhindwa Circuit Board pamusoro pekupera nekuda kwemitengo yakaderera uye nyore-kushandisa pakugadzira PCB.
OSP iri kushandisa makemikari musanganiswa wemhangura yakafumuka ichigadzira zvisungo zvemhangura isati yasoreswa, ichigadzira organic metallic layer kuchengetedza mhangura iri pachena kubva ku ngura.OSP Hukobvu, itete, pakati pe46µin (1.15µm) -52µin(1.3µm), yakayerwa neA° (angstrom).
Iyo Organic Surface Protectant iri pachena, isingaite yekutarisa.Mune soldering inotevera, ichakurumidza kubviswa.Iyo kemikari kunyudza maitiro inogona kushandiswa chete mushure mekunge mamwe maitiro aitwa, anosanganisira Magetsi Kuedza uye Kuongorora.Kuisa OSP pamusoro pekupedzisira kuPCB kunowanzobatanidza nzira yekemikari inofambiswa kana tangi yekunyura yakamira.
Maitiro acho anowanzo kutaridzika seizvi, aine rinses pakati pedanho rega rega:
1) Kuchenesa.
2) Kukwidziridzwa kweTopography: Iyo yakafumurwa mhangura inopinda micro-etching kuti iwedzere chisungo pakati pebhodhi neOSP.
3) Acid sukurudza mune sulfuric acid mhinduro.
4) OSP application: Panguva ino mukuita, mhinduro yeOSP inoshandiswa kuPCB.
5) Deionization sukurudza: Mushonga weOSP unopinzwa nemaion kuti ubvumire kubviswa kuri nyore panguva yekutengesa.
6) Dry: Mushure mekunge OSP yapera yashandiswa, PCB inofanira kuomeswa.
OSP pamusoro pekupedzisira ndeimwe yeanonyanya kufarirwa kupedzisa.Iyo inodhura zvakanyanya, yakasarudzika sarudzo yeakadhindwa edunhu mabhodhi kugadzira.Inogona kugovera co-planar pads pamusoro pemapako akanaka / BGA / diki zvidimbu kuiswa.OSP yepamusoro inogadzirisika zvakanyanya, uye haide yakakwira midziyo yekugadzirisa.
Nekudaro, OSP haina kusimba sezvaitarisirwa.Hune zvakaipa zvawo.OSP inonzwisisa kubata uye inoda kunyatsobata kuti udzivise kukwenya.Kazhinji, kuwanda kwekutengesa hakuna kutaurwa sezvo Multiple soldering inogona kukuvadza firimu.Hupenyu hwayo hwesherufu ndihwo hupfupi pakati pezvese zvinopera.Mapuranga anofanirwa kuunganidzwa nguva pfupi mushure mekushandisa kupfeka.Muchokwadi, PCB vanopa vanogona kuwedzera hupenyu hwayo hwesherufu nekuwanda kudzokorora kupedzisa.OSP yakaoma zvikuru kuyedza kana kuongorora nekuda kwekujeka kwayo.
Zvazvakanakira:
1) Lead-isina
2) Flat surface, yakanaka kune yakanaka-pitch pads (BGA, QFP...)
3) Yakanyanya kuonda kupfeka
4) Inogona kuiswa pamwe chete nezvimwe zvinopera (semuenzaniso OSP + ENIG)
5) Mutengo wakaderera
6) Reworkability
7) Nzira iri nyore
Cons
1) Haina kunaka kune PTH
2) Kubata Sensitive
3) Hupenyu hupfupi hweSherufu (<6 mwedzi)
4) Haina kukodzera tekinoroji yecrimping
5) Kwete Yakanaka kune akawanda kudzokorora
6) Mhangura ichafumurwa pagungano, inoda hukasha flux
7) Zvakaoma kuongorora, zvinogona kukonzera nyaya mukuyedzwa kweICT
Kushandiswa kwakajairika:
1) Midziyo yakanaka yepitch: Kupedzisa uku kwakanakisa kunyorera kune yakanaka pitch zvishandiso nekuda kwekushaikwa kwe-co-planar pads kana nzvimbo dzisina kuenzana.
2) Mabhodhi eSevha: Mashandisirwo eOSP anosiyana kubva kune yakaderera-yekupedzisira maapplication kusvika kune yakakwira-frequency server board.Uku kusiyanisa kwakakura kwekushandisa kunoita kuti ive yakakodzera kune akawanda maapplication.Inoshandiswawo kazhinji pakusarudza kupedzisa.
3) Surface Mount tekinoroji (SMT): OSP inoshanda nemazvo kumusangano weSMT, paunoda kubatanidza chinhu chakananga kuPCB.
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Nguva yekutumira: Feb-02-2023
