Kupfapfaidza matani inhanho uye maitiro muPCB yekuongorora maitiro. ThePCB bhodhiinonyudzwa mumvura yakanyungudutswa yakanyungudutswa, kuitira kuti nzvimbo dzose dzemhangura dziri pachena dzifukidzwe ne solder, uye ipapo solder yakawandisa pabhodhi inobviswa nemhepo inopisa. Bvisa. Simba rekutengesa uye kuvimbika kwebhodhi redunhu mushure mekupfapfaidza tini zviri nani. Nekudaro, nekuda kwehunhu hwayo hwekuita, iyo yepasi flatness yetin spray kurapwa haina kunaka, kunyanya kune zvidiki zvemagetsi zvikamu zvakaita seBGA mapakeji, nekuda kwenzvimbo diki yewelding, kana iyo flatness isiri yakanaka, inogona kukonzera matambudziko akadai. matunhu mapfupi.

mukana:

1. Kunyorova kwezvikamu panguva yekugadzirisa zviri nani, uye kutengesa kuri nyore.

2. Inogona kudzivirira nzvimbo yemhangura yakazaruka kubva pakusvibiswa kana kuti oxidized.

kukanganisa:

Haikodzeri mapini ekutengesa ane mapeji akanaka uye zvikamu zvakanyanya kudiki, nekuti iyo yepamusoro flatness ye-tin-sprayed board haina kunaka. Zviri nyore kugadzira marata muPCB proofing, uye zviri nyore kukonzeresa pfupi pfupi yezvikamu zvine gap pini. Kana ichishandiswa mune yakapetwa kaviri-mativi eSMT maitiro, nekuti chikamu chechipiri chakaita yakanyanya tembiricha reflow soldering, zviri nyore kwazvo kunyungudutsa tin pfapfaidzo uye kuburitsa marata kana madonhwe emvura akafanana anokanganiswa negiravhiti kuita spherical tin point iyo. kudonha, zvichiita kuti nzvimbo yacho iwedzere kusatarisika. Kupfapfaidza kunokonzeresa matambudziko ekushingisa.

Parizvino, kumwe kuongorora kwePCB kunoshandisa OSP maitiro uye kunyudza goridhe maitiro kutsiva tin kumwaya nzira; kusimukira kwetekinoroji kwaitawo kuti mamwe mafekitori atore kunyudza tin uye kunyudza sirivheri maitiro, pamwe chete nemaitiro ekusina mutobvu mumakore achangopfuura, kushandiswa kwekupfapfaidza kwerata kwave kumwezve muganhu.