Menene Hanyoyin Binciken Tsaftar PCBA?

Hanyar duba gani

Yin amfani da gilashin ƙara girma (X5) ko na'urar gani da ido zuwa PCBA, ana kimanta ingancin tsaftacewa ta hanyar lura da kasancewar ƙaƙƙarfan ragowar solder, ɗigo da ƙwanƙwasa gwangwani, ɓangarori na ƙarfe da ba a gyara su da sauran gurɓatattun abubuwa.Yawancin lokaci ana buƙatar saman PCBA dole ne ya kasance mai tsabta kamar yadda zai yiwu kuma kada a ga alamun rago ko gurɓatawa.Wannan alama ce ta inganci kuma yawanci ana yin niyya ne ga buƙatun mai amfani, nasu ma'auni na gwajin gwajin da adadin girman da aka yi amfani da su yayin dubawa.Wannan hanya tana da sauƙin sauƙi da sauƙin amfani.Rashin hasara shi ne cewa ba zai yiwu a bincika gurɓataccen abu a kasan abubuwan da aka gyara da sauran gurɓatun ionic ba kuma ya dace da ƙarancin aikace-aikacen da ake buƙata.

Hanyar Hakar Magani

Hanyar hakar sauran ƙarfi kuma ana kiranta da gwajin abun ciki na gurɓataccen ionic.Yana da wani nau'i na ionic gurbata abun ciki matsakaita gwajin, da gwajin ne kullum amfani da IPC Hanyar (IPC-TM-610.2.3.25), an tsabtace PCBA, nutse a cikin ionic digiri gurbata gwajin gwajin bayani (75% ± 2% tsarki isopropyl. barasa da 25% DI ruwa), ragowar ionic za a narkar da a cikin sauran ƙarfi, a hankali tattara sauran ƙarfi, ƙayyade ta resistivity.

Abubuwan gurɓatawar Ionic yawanci ana samun su ne daga abubuwa masu aiki na mai siyarwa, kamar halogen ions, ions acid, da ions ƙarfe daga lalata, kuma ana bayyana sakamakon a matsayin adadin sodium chloride (NaCl) daidai da kowane yanki.Wato, jimillar adadin waɗannan gurɓataccen ion (ciki har da waɗanda za a iya narkar da su kawai) daidai yake da adadin NaCl, ba lallai ba ne ko keɓantacce a saman PCBA.

Gwajin Juriya na Insulation (SIR)

Wannan hanyar tana auna juriya na rufin sama tsakanin masu gudanarwa akan PCBA.Auna juriya na rufin saman yana nuna ɗigogi saboda gurɓatawa a ƙarƙashin yanayi daban-daban na zafin jiki, zafi, ƙarfin lantarki da lokaci.Abubuwan amfani sune ma'aunin kai tsaye da ƙididdiga;kuma ana iya gano kasancewar wuraren da aka keɓe na manna mai siyarwa.Kamar yadda saura juzu'i a cikin PCBA solder manna ne yafi kasancewa a cikin kabu tsakanin na'urar da PCB, musamman a cikin solder gidajen abinci na BGAs, wanda ya fi wuya a cire, domin kara tabbatar da tsaftacewa sakamako, ko don tabbatar da aminci. (aikin lantarki) na manna solder da aka yi amfani da shi, ma'aunin juriya a cikin kabu tsakanin bangaren da PCB yawanci ana amfani dashi don bincika tasirin tsaftacewa na PCBA.

Babban yanayin ma'aunin SIR shine gwajin sa'o'i 170 a zazzabi na yanayi na 85°C, zafi na yanayi na 85% RH da nuna son kai na 100V.

Injin tsabtace NeoDen PCB

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