Mapangidwe a DFM a PCB kupanga malo

Kutalikirana kwachitetezo chamagetsi kumatengera kuchuluka kwa fakitale yopanga mbale, yomwe nthawi zambiri imakhala 0.15mm.Ndipotu, ikhoza kukhala pafupi kwambiri.Ngati dera silikugwirizana ndi chizindikirocho, malinga ngati palibe dera lalifupi ndipo panopa ndi lokwanira, mphamvu yayikulu imafuna mawaya ochuluka ndi matayala.

1.Kutalikirana pakati pa mawaya

Mtunda pakati pa kondakitala uyenera kuganiziridwa potengera luso la wopanga PCB.Ndibwino kuti mtunda pakati pa makontrakitala ukhale osachepera 4mil.Komabe, mafakitale ena amathanso kupanga ndi 3/3mil m'lifupi mwa mizere ndi kutalikirana kwa mizere.Kuchokera pamalingaliro opanga, ndithudi, zazikulu zimakhala bwino pansi pamikhalidwe.6mil wamba ndi wamba.

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2.Spacing pakati pa pad ndi waya

Mtunda pakati pa pad ndi mzere nthawi zambiri umakhala wosachepera 4mil, ndipo mtunda waukulu pakati pa pedi ndi mzere pamene pali danga, ndibwino.Chifukwa kuwotcherera pad kumafuna kutsegula zenera, kutsegula kwazenera ndikokulirapo kuposa 2mil ya pad.Ngati kusiyanako sikuli kokwanira, sikudzangoyambitsa kufupika kwa mzere wa mzere, komanso kumayambitsa kuwonekera kwa mkuwa wa mzerewo.

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3.Kutalikirana pakati pa Pad ndi Pad

Mipata pakati pa pad ndi pad iyenera kukhala yayikulu kuposa 6mil.Ndizovuta kupanga solder stop-wotcherera mlatho wosakwanira pad spacing, ndipo IC pad ya maukonde osiyanasiyana akhoza kukhala ndi dera lalifupi pamene kuwotcherera lotseguka weld mlatho.Mtunda wapakati pa pad network ndi pad ndi wocheperako, ndipo sikoyenera kusokoneza zida zokonzedwa pambuyo pa malata olumikizidwa kwathunthu pawotcherera.

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4.Copper ndi mkuwa, waya, PAD spacing

Mtunda pakati pa khungu lamkuwa wamoyo ndi mzere ndi PAD ndi wokulirapo kuposa pakati pa zinthu zina zosanjikiza mzere, ndipo mtunda pakati pa khungu lamkuwa ndi mzere ndi PAD ndi wamkulu kuposa 8mil kuti athandizire kupanga ndi kupanga.Chifukwa kukula kwa khungu la mkuwa sikuyenera kuchita zamtengo wapatali, zazikulu pang'ono ndi zazing'ono zilibe kanthu.Pofuna kupititsa patsogolo zokolola za zinthu, kusiyana pakati pa mzere ndi PAD kuchokera pakhungu lamkuwa kuyenera kukhala kwakukulu momwe kungathekere.

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5.Spacing wa waya, PAD, mkuwa ndi mbale m'mphepete

Nthawi zambiri, mtunda pakati pa mawaya, pad ndi khungu lamkuwa ndi mzere wozungulira uyenera kukhala wokulirapo kuposa 10mil, ndipo zosakwana 8mil zidzatsogolera kuwonetseredwa kwa mkuwa m'mphepete mwa mbale itatha kupanga ndi kuumba.Ngati m'mphepete mwa mbaleyo ndi V-CUT, ndiye kuti masitayilo akuyenera kukhala aakulu kuposa 16mil.Waya ndi PAD osati mkuwa poyera mophweka, mzere pafupi kwambiri m'mphepete mwa mbale kungakhale yaing'ono, chifukwa cha mavuto panopa kunyamula, PAD yaing'ono bwanji kuwotcherera, chifukwa kuwotcherera osauka.`

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