Nhau

Maitiro ekusarudza Surface Pedzisa Yeko PCB Dhizaini

---An Expert's Guide kuPCB Surface Inopedza

Ⅰ Chii uye Sei

Zvakatumirwa:Nov15, 2022

Categories: Blogs

Tags: pcb,pcba,pcb musangano,pcb mugadziri, pcb kugadzira

Kana zvasvika pakupedzwa kwepamusoro, pane nzira dzakasiyana-siyana, semuenzaniso HASL, OSP, ENIG, ENEPIG, Hard Gold, ISn, IAg, nezvimwewo. Mune zvimwe zviitiko, zvingava nyore kuita sarudzo, senge edge connection inoenda kune yakaoma. gold;HASL kana HASL-yemahara inosarudzika kune yakakura SMT components kuiswa.Nekudaro, zvingave zvine hunyengeri kusarudzira imwe kupera kwako HDI mabhodhi ane Ball Grid Arrays (BGAs) kana pasina zvimwe zvinongedzo.Pane zvinhu zvakaita sebhajeti rako repurojekiti iyi, zvinodiwa zvekuvimbika kana zvipingamupinyi zvenguva yekushanda zvinoda kutariswa pane mamwe mamiriro.Imwe neimwe mhando yePCB pamusoro pekupedzisira ine zvayakanakira nezvayakaipira, zvinogona kuvhiringa kuti PCB vagadziri vasarudze kuti ndeipi yakakodzera PCB mabhodhi ako.Isu tiri pano kuti tikubatsire iwe kuti uzvione neruzivo rwedu rwemakore akawanda semugadziri.

1. Chii chinonzi PCB pamusoro pekupedzisira

Kuisa iyo yekumusoro kupedzisa (yepamusoro kurapwa / yekumusoro coating) ndeimwe yematanho ekupedzisira ekugadzira maPCB.Iyo yekupedzisa kwepamusoro inoumba yakakosha interface pakati peiyo isina PCB bhodhi uye zvikamu, ichishanda kune zviviri zvakakosha zvinangwa, kupa nzvimbo inotengeswa yePCB gungano uye kuchengetedza yakasara yakafumurwa mhangura inosanganisira trace, mapadhi, maburi uye ndege dzepasi kubva kune oxidation kana kusvibiswa, nepo solder mask inovhara iyo yakawanda yedunhu.

Kupedzisa kwepamusoro kwakakosha paPCB yekugadzira PCB ShinTech.Kupa nzvimbo inotengeswa yePCB gungano uye kuchengetedza yakafumurwa mhangura kubva kune oxidation uye kusvibiswa.

Mazuva ano pamusoro pekupedzisira haana lead-isina, zvinoenderana neRestriction yeHazardous Substances (RoHS) uye Waste Electrical and Electronic Equipment (WEEE) mirairo.Yemazuva ano PCB pamusoro pekupedzisira sarudzo dzinosanganisira:

● LF-HASL (Lead Free Hot Air Solder Leveling)
● OSP (Organic Solderability Preservatives)
● ENIG (Electroless Nickel Immersion Gold)
● ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold)
● Electrolytic Nickel/Gold - Ni/Au (Hard/Soft Gold)
● Kunyudza Sirivha, IAg
●White Tin kana Immersion Tin, ISn

2. Ungasarudza sei pamusoro pekupedzisira kwePCB yako

Imwe neimwe mhando yePCB pamusoro pekupedzisira ine zvayakanakira nezvayakaipira, zvinogona kuvhiringa kuti PCB vagadziri vasarudze kuti ndeipi yakakodzera PCB mabhodhi ako.Kusarudza iyo chaiyo yedhizaini yako inoda kutora akawanda zvinhu muaccount sezvinotevera.

★ Budge
★ Mabhodhi edunhu ekupedzisira application nharaunda (semuenzaniso tembiricha, vibration, RF).
★ Zvinodiwa zveLead yemahara munyoreri, inoshamwaridzana nenharaunda.
★ Kuvimbika kunodiwa kwePCB board.
★ Mhando yezvikamu, density kana zvinodiwa pakuungana eg press fit, SMT, wire bonding, through-hole soldering, etc..
★ Zvinodiwa pakupfava kwepasi kweSMT pads yeBGA application.
★ Zvinodiwa zvehupenyu hweSherufu uye reworkability yekupedza kwepamusoro.
★ Kuvhunduka/kudonha kuramba.Semuyenzaniso, ENIG haina kukodzera kusmart phone sezvo smart phone inoda tin-copper mabhondi ekuvhunduka kukuru uye kuramba kudonha panzvimbo yematani-nickel bond.
★ Huwandu uye Kuburikidza.Kune yakakwira vhoriyamu yePCBs, kunyudza tin inogona kuve yakavimbika uye inodhura-sarudzo sarudzo kupfuura ENIG uye Kunyudza Silver uye tarnish sensitivity nyaya dzinogona kudzivirirwa.Kusiyana neizvi, sirivheri yekunyudza iri nani pane ISn pabatch diki.
★ Kukwanisa kuita ngura kana kusvibiswa.Semuyenzaniso, kunyudza sirivha kupera kunowanzoita kukambaira.Ose ari maviri OSP uye Immersion tin anonzwa kubata kukuvara.
★ Aesthetics yebhodhi, nezvimwewo.

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Nguva yekutumira: Nov-15-2022