Na daya, gwajin lantarki

PCB yayin aiwatarwa, da wahala a guji gajeriyar da’ira, da’irar buɗewa da ɓarna da abubuwan da ke faruwa na waje suka haifar, kamar lahani na lantarki, haɗe tare da ci gaba zuwa PCB mai yawa, tazara mai kyau da juyin halitta na matakai da yawa, da gazawa zuwa kan lokaci zuwa farantin farantin mara kyau, kuma bar shi ya shiga cikin tsari, an daure ya haifar da ƙarin asarar kuɗi, don haka ban da haɓaka sarrafa sarrafa, Ingantattun dabarun gwaji na iya samar da masana’antun PCB tare da mafita don rage ƙima da haɓaka samfur.

A cikin tsarin samar da samfuran lantarki, asarar farashin da lahani ke haifar yana da digiri daban -daban a kowane mataki, kuma a farkon ganowa, ƙananan farashin gyara. Dokar 10 “s galibi ana amfani da ita don kimanta Kudin gyara lokacin da aka gano PCB yana da lahani a matakai daban -daban na Tsarin. Misali, bayan kammala samar da farantin komai, idan ana iya gano allon a cikin da’irar a cikin ainihin lokaci, yawanci kawai yana buƙatar gyara lahani, ko kuma a mafi yawan asarar farantin komai; Koyaya, idan ba a gano da’irar ba, ana jigilar jirgi zuwa mai haɗewa na ƙasa don kammala shigar da sassan, da tukunyar tanderu da sake kunna IR, amma an gano da’ira a wannan lokacin, babban mai haɗin gwiwa na ƙasa zai tambayi kamfanin kera jirgi mara komai. don rama farashin sassa, kuɗin masana’antar mai nauyi, kuɗin dubawa, da sauransu. Idan mafi muni, har yanzu ba a sami hukumar da ke da matsala a gwajin masana’antar taro ba, amma a cikin tsarin gabaɗayan samfuran da aka gama, kamar kwamfutoci, wayoyin hannu, sassan mota, da sauransu, to gwajin gano asarar, zai zama fanko akan allo akan lokaci sau ɗari, sau dubu, ko ma mafi girma. Don haka, gwajin wutan lantarki don masana’antun PCB duk game da gano farkon allon allon mara kyau.

Mai aiki a ƙasa yana buƙatar mai ƙera PCB don yin gwajin wutar lantarki na kashi 100 % sabili da haka ya yarda da mai ƙera PCB akan ƙayyadaddun yanayin gwaji da hanyoyin gwaji, don haka ɓangarorin biyu za su fara bayyana abin a sarari a sarari:

1. Tushen bayanan gwaji da tsari

2, yanayin gwaji, kamar ƙarfin lantarki, halin yanzu, rufi da haɗi

3. Hanyar samarwa da zaɓin kayan aiki

4. Babin gwaji

5, bayani dalla -dalla

Akwai matakai uku a masana’antar PCB waɗanda dole ne a gwada su:

1. Bayan etching ciki Layer

2. Bayan etching waje kewaye

3, samfurin da aka gama

Kowane mataki zai sami sau 2 ~ 3 na gwajin 100%, fitar da farantin mara kyau don aiki mai nauyi. Sabili da haka, tashar gwajin ita ce mafi kyawun tushen tattara bayanai don nazarin matakan matsalar tsari. Dangane da sakamakon ƙididdiga, zaku iya samun adadin kewayon buɗewa, gajeren zango da sauran matsalolin rufi, sannan ku gwada bayan sake sakewa. Bayan rarrabe bayanan, yi amfani da hanyar kula da inganci don gano tushen matsalar kuma warware ta.

Na biyu, hanyar auna wutar lantarki da kayan aiki

Hanyoyin gwajin lantarki sun haɗa da: Dedicated, Universal Grid, Flying Probe, e-beam, conductive zane, Ƙarfi da ATG-scan MAN su ne na’urori uku da aka fi amfani da su. Su injin gwaji ne na musamman, injin gwaji na gaba ɗaya da injin gwajin allura mai tashi. Domin ƙarin fahimtar ayyukan kowane na’ura, an kwatanta fasalin manyan na’urori uku a ƙasa.

1. Gwajin gwaji

Kayan aiki (kamar fil da dials da aka yi amfani da su don gwada allon kewaye) suna aiki ne kawai da lambar abu ɗaya. Ba za a iya gwada alluran da ke da lambobi daban -daban ba. Dangane da wuraren gwajin, za a iya gwada kwamiti ɗaya a tsakanin maki 10,240, kuma ɓangarorin biyu a tsakanin maki 8,192. Dangane da yawa na gwaji, saboda kaurin shugaban binciken, ya fi dacewa da allon sama da farar.

2. Gwajin Grid na Duniya

Babban ƙa’idar gwajin amfani-gama-gari ita ce an tsara shimfidar da’irar PCB gwargwadon Grid. Gabaɗaya, abin da ake kira ƙimar layin yana nufin nisan Grid ɗin, wanda Pitch ya bayyana (wani lokacin kuma ana iya bayyana shi ta hanyar ramin rami), kuma gwajin amfani da janar ya dogara da wannan ƙa’idar. Dangane da matsayin rami, ana amfani da G10 substrate azaman Mask. A matsayin rami kawai, binciken zai iya wucewa ta Mask don auna wutar lantarki, don haka kera kayan aiki yana da sauƙi da sauri, kuma za a iya sake amfani da binciken. Daidaitaccen Grid ɗin da aka gyara babban allurar allura tare da maki ma’auni da yawa za a iya amfani da su don samar da tire allurar bincike mai motsi gwargwadon lambobi daban -daban. Muddin an canza tiren allura mai motsi a yayin samarwa da yawa, ana iya amfani dashi don gwajin samar da taro na lambobi daban -daban. Bugu da ƙari, don tabbatar da tsarin keɓaɓɓen kwamiti na PCB ba a hana shi ba, ya zama dole a gudanar da gwajin wutar lantarki ta Open/Short a kan jirgin tare da farantin allurar takamaiman wurin tuntuɓar a kan injin-ma’aunin wutar lantarki na gaba-gaba tare da babban ƙarfin lantarki ( kamar 250V) maki masu aunawa da yawa. Wannan nau’in na’urar TesTIng ta duniya ana kiranta “AutomaTIc TesTIng Equipment” (ATE).

Maɓallan gwajin amfani gabaɗaya galibi sun fi maki 10,000, kuma ana kiran girman gwajin akan gwajin grid. Idan ana amfani da shi a cikin allon allurai masu yawa, tazarar ta yi kusa, kuma an raba ta da ƙirar kan-grid, don haka yana cikin gwajin kashe-kashe, kuma dole ne a tsara kayan musamman. Gwargwadon gwajin gwajin na kowa zai iya kaiwa QFP.

3. Flying Probe test

Ka’idar gwajin allurar tashi mai sauqi. Bincike biyu kawai ake buƙata don motsa x, y da Z don gwada ƙarshen ƙarshen kowane layi ɗaya bayan ɗaya, don haka babu buƙatar yin wani tsararren tsada. Koyaya, saboda gwajin ƙarshe, saurin aunawa yana da jinkiri sosai, game da 10 ~ 40 maki/ SEC, don haka ya dace da samfurori da ƙaramin ƙara girma; Dangane da yawa na gwaji, ana iya amfani da gwajin allurar tashi zuwa faranti masu yawa (), kamar MCM.