Mau oyamba:

Ndikukula mwachangu kwa PCB makampani, PCB ikuyenda pang’onopang’ono kulowera kolondola bwino kwambiri, kabowo kakang’ono, kuchuluka kwake kwakukulu (6: 1-10: 1). Chofunika dzenje mkuwa ndi 20-25um, ndi DF mzere mtunda board4mil bolodi. Nthawi zambiri, makampani a PCB ali ndi vuto losakanikirana kwamafilimu. Kanema wamafilimu amachititsa kuti pakhale mayendedwe achidule, omwe angakhudze zokolola za ONE-TIME za board ya PCB kudzera pakuwunika kwa AOI, chojambula chachikulu cha kanema kapena mfundo sizingakonzedwe mwachindunji zomwe zimabweretsa zidutswa.

Chithunzi chojambula cha vuto lazamafilimu osanja ojambula:

Momwe mungathetsere vuto la bolodi ya PCB bolodi

Kufufuza kwa mfundo ya bolodi lakumata la PCB

(1) Ngati makulidwe amkuwa amtundu wa graphic electroplating mzere ndi akulu kuposa makulidwe a kanema wouma, amachititsa kuti clamping ifike. (The youma filimu makulidwe fakitale ambiri PCB ndi 1.4mil)

(2) If the thickness of copper and tin on graphic electroplating line exceeds the thickness of dry film, film clip may be caused.

Kusanthula kanema kwama board a PCB

1. Zosavuta kujambula zithunzi ndi zithunzi za bolodi la kanema

Momwe mungathetsere vuto la bolodi ya PCB bolodi?

In FIG. 3 and FIG. 4, it can be seen from the pictures of the physical plate that the circuit is relatively dense, and there is a large difference between the ratio of length and width in the engineering design and layout, and the adverse current distribution. The minimum line gap of D/F is 2.8mil (0.070mm), the smallest hole is 0.25mm, the plate thickness is 2.0mm, the aspect ratio is 8:1, and the hole copper is required to be more than 20Um. Ndi za bolodi lazovuta.

2. Kufufuza pazifukwa zowakanikizira kanema

Makulidwe apano azithunzi zamagetsi ndi akulu ndipo zokutira zamkuwa ndizochuluka kwambiri. There is no edge strip at both ends of the fly bar, and thick film is plated in the high current area. Ng’ombe yomwe ilipo pakali pano ndi yayikulu kuposa mbale yopanga. Ndege ya C / S ndi ndege ya S / S yolumikizidwa molowera.

Mbale tatifupi ndi kagawo kakang’ono 2.5-3.5mil.

Kugawa kwamakono sikununifolomu, yamkuwa yamkuwa kwa nthawi yayitali osatsuka anode. Zolakwika pakali pano (mtundu wolakwika kapena mbale yolakwika) Chitetezo chamakono cha bolodi ya PCB mu silinda yamkuwa ndi yayitali kwambiri.

 Kapangidwe ka polojekitiyi sikwanzeru, malo oyendetsera bwino ma projekiti ndizolakwika, ndi zina zambiri. PCB board line gap is too small, difficult board line graphics special easy clip film.

Njira yabwino yosinthira kanema

1. muchepetse kuchuluka kwa graph pano, kutambasuka koyenera kwa nthawi yamkuwa.

2. Lonjezerani kukula kwa mkuwa wa mbaleyo moyenerera, kuchepetsa kuchuluka kwa mkuwa wa graph moyenera, ndikuchepetsa kukula kwa mkuwa wa graph.

3. Makulidwe amkuwa am’munsi mwa platen asinthidwa kuchokera ku 0.5OZ mpaka 1 / 3oz pansi pamkuwa. Kukula kwa mkuwa kwa mbaleyo kumakulitsidwa ndi pafupifupi 10Um kuti muchepetse kuchuluka kwa graph ndi makulidwe amkuwa a graph.

4. Pakusiyana kwa bolodi <4mil kugula 1.8-2.0mil kuyesa koyeserera kwamafilimu.

5. Other schemes such as modification of typesetting design, modification of compensation, line clearance, cutting ring and PAD can also relatively reduce the production of film clip.

6. Electroplating kupanga njira yowongolera mbale yamafilimu yokhala ndi mphako yaying’ono komanso kopanira kosavuta

1. FA: Choyamba yesani m’mphepete mwazitsulo kumapeto kwa bolodi. Pambuyo pa makulidwe amkuwa, mzere m’lifupi / mzere mtunda ndi impedance ali oyenerera, malizitsani kutsitsa bolodi la flobar ndikudutsa kuyendera kwa AOI.

2. Filimu yomwe imazimiririka: ya mbale yokhala ndi D / F linegap <4mil, liwiro loyenda la kanema lomwe likuzimiririka liyenera kusintha pang’onopang’ono.

3. Maluso a ogwira ntchito a FA: mvetserani kuwunika kwaposachedwa pakuwonetsa zomwe zatuluka mundawo ndi kanema wosavuta. Nthawi zambiri, malire ochepera a mbaleyo amakhala ochepera 3.5mil (0.088mm), ndipo kuchuluka kwa mkuwa wamagetsi kumayendetsedwa mkati mwa AS 12ASF, zomwe sizophweka kupanga kanema kopanira. Kuphatikiza pazithunzi za mzere zovuta makamaka bolodi monga ili pansipa:

Momwe mungathetsere vuto la bolodi ya PCB bolodi

Chosachepera D / F kusiyana kwa bolodi iyi ndi 2.5mil (0.063mm). Pogwiritsa ntchito mzere wa gantry electroplating, tikulimbikitsidwa kuti mugwiritse ntchito ≦ 10ASF kuyesa kachulukidwe koyeso kwa FA.

Momwe mungathetsere vuto la bolodi ya PCB bolodi?

Mzere wocheperako wa bolodi lazithunzi D / F ndi 2.5mil (0.063mm), wokhala ndi mizere yodziyimira payokha komanso yogawana mosagwirizana, sungapewe tsogolo la kanema kophatikizana ngati pali mzere wofananira wamagetsi opanga ambiri. Makulidwe amakono amkuwa osanja ndi 14.5ASF * 65 mphindi kuti apange kanema, ndikulimbikitsidwa kuti kuchuluka kwamagetsi kwama graph ndi ≦ 11ASF test FA.

Personal experience and summary

Ndakhala ndikuchita nawo machitidwe a PCB kwazaka zambiri, makamaka fakitale iliyonse ya PCB yopanga ndi zingwe zazing’ono sizikhala ndi vuto lamafilimu, kusiyana ndikuti fakitare iliyonse ili ndi gawo losiyana lavuto loyipa lamafilimu, makampani ena alibe vuto lokanikiza kanema, makampani ena ali ndi vuto lokanikiza mafilimu. The following factors are analyzed:

1. aliyense kampani PCB gulu kapangidwe mtundu ndi osiyana, PCB kupanga ndondomeko vuto ndi osiyana.

2. Kampani iliyonse ili ndi njira ndi kasamalidwe kosiyanasiyana.

3. kuchokera pakuwona kwa kuphunzira kwazaka zambiri zomwe ndakumana nazo, kuti mbale yaying’ono iyenera kulabadira kusiyana koyamba kumatha kugwiritsa ntchito kachulukidwe kakang’ono kamene kali koyenera komanso koyenera kutalikitsa nthawi yazitsulo zamkuwa, malangizo apano malinga ndi zomwe zimachitika pakachulukidwe pano komanso zokutira zamkuwa zimagwiritsidwa ntchito poyesa nthawi yabwino, tcherani khutu njira yamagwiritsidwe ndi njira yogwirira ntchito, yolunjika pamizere yocheperako kuchokera ku 4 mil mbale kapena zochepa, yesani ntchentche gulu la FA liyenera kuyang’aniridwa ndi AOI popanda kapisozi, Nthawi yomweyo, imathandizanso pakuwongolera ndi kupewa, kuti mwayi wopanga makanema ojambula azikhala ochepa kwambiri.

M’malingaliro mwanga, mtundu wabwino wa PCB umafunikira osati zokumana nazo zokha komanso luso, komanso njira zabwino. Zimadaliranso ndi kuphedwa kwa anthu omwe ali mu dipatimenti yopanga.

Graphic electroplating ndi yosiyana ndi mbale yonse yosanjikiza, kusiyana kwakukulu kuli pazithunzi zazithunzi zamitundu yosiyanasiyana ya mbale zamagetsi, mitundu ina yazithunzi sizigawidwa molingana, kuphatikiza pazitali zazitali ndi mtunda, pali zochepa, mizere yochepa yokha, mabowo odziyimira pawokha mitundu yonse yazithunzi zapadera. Chifukwa chake, Wolemba amakonda kugwiritsa ntchito luso la FA (chiwonetsero chamakono) kuthetsa kapena kuletsa vuto la kanema wonenepa. Magawo azosintha ndi ochepa, ofulumira komanso ogwira mtima, ndipo zoteteza zimadziwika.