Inkqubo esisiseko ye Ibhodi PCB uyilo kwi-SMT chip processing lufuna ingqalelo ekhethekileyo. Enye yeenjongo eziphambili zoyilo lwenkqubo yesekethe kukubonelela ngoluhlu lwenethi kuyilo lwebhodi yesekethe yePCB, kunye nokulungiselela isiseko soyilo lwebhodi yePCB. Inkqubo yoyilo lweebhodi zesekethe ze-PCB ezinamanqwanqwa amaninzi iyafana naleyo yeebhodi zePCB eziqhelekileyo. Umahluko kukuba ukuhanjiswa komgca wesignali ophakathi kunye nokwahlula kombane ongaphakathi kufuneka kuqhutywe. Lilonke, uyilo lwebhodi yesekethe yePCB enemigangatho emininzi yahlulahlulwe ngokwala manyathelo alandelayo:

1. Ukucwangciswa kwebhodi yesekethe kukucwangcisa ubukhulu bomzimba webhodi ye-pcb, ifom yokupakisha yecandelo, indlela yokunyusa icandelo, kunye nesakhiwo somaleko, oko kukuthi, ibhodi enye, ibhodi ephindwe kabini kunye ibhodi multi-layer.

2. Ukusetwa kweparamitha yokusebenza ibhekisa ikakhulu kwindawo yokusebenza ipharamitha yokuseta kunye noseto lwepharamitha yomaleko wokusebenza. Ukuseta iparameters zokusingqongileyo pcb ngokuchanekileyo nangengqiqo kunokuzisa uncedo olukhulu kuyilo lwebhodi yesekethe kunye nokuphucula ukusebenza kakuhle.

3. Uyilo lwecandelo kunye nohlengahlengiso. Emva kokuba ixesha langoku lomsebenzi lilungile, uluhlu lwenetha lungangeniswa kwi-pcb, okanye uluhlu lwenetha lungangeniswa ngokuthe ngqo kumzobo weskimu ngokuhlaziya i-pcb. Ubeko lwamacandelo kunye nohlengahlengiso yimisebenzi ebaluleke ngakumbi kuyilo lwePCB, echaphazela ngokuthe ngqo imisebenzi efana neengcingo ezilandelayo kunye nokwahlulahlula kombane wangaphakathi.

4. Imithetho yocingo isetyenzisiwe, ngokukodwa ukuseta iinkcazo ezahlukeneyo zocingo lwesekethe, ububanzi bocingo, isithuba se-wire parallel, umgama wokhuseleko phakathi kweengcingo kunye neepads, kunye nobukhulu, njl. . Isinyathelo esiyimfuneko, imithetho yocingo elungileyo inokuqinisekisa ukhuseleko lwendlela yebhodi yesekethe, kwaye ihlangabezane neemfuno zenkqubo yokuvelisa, ukonga iindleko.

5. Eminye imisebenzi encedisayo, efana nokufakwa kobhedu kunye nokuzaliswa kwe-teardrop, kunye nomsebenzi wokucubungula uxwebhu olufana nokukhutshwa kwengxelo kunye nokugcina ukuprintwa. Ezi fayile zingasetyenziselwa ukujonga nokuguqula iibhodi zeesekethe zePCB, kwaye zingasetyenziswa njengoluhlu lwamacandelo athengiweyo.

Imithetho yocingo yecandelo

1. Dweba indawo yocingo ngaphakathi kwe-1mm ukusuka kumda webhodi yePCB, kwaye ngaphakathi kwe-1mm ejikeleze umngxuma wokunyuka, i-wiring ayivunyelwe;

2. Intambo yamandla kufuneka ibe banzi kangangoko kwaye ingabi ngaphantsi kwe-18mil; ububanzi bomgca wesignali akufunekanga bube ngaphantsi kwe-12mil; i-CPU yegalelo kunye nemigca yemveliso akufanele ibe ngaphantsi kwe-10mil (okanye i-8mil); isithuba somgca akufuneki sibe ngaphantsi kwe-10mil;

3. Indlela eqhelekileyo yokudlula ayikho ngaphantsi kwe-30mil;

4. Dual in-line: pad 60mil, indawo yokuvula 40mil; I-1/4W ukuchasana: 51 * 55mil (0805 intaba ephezulu); xa e-line, pad 62mil, aperture 42mil; i-electrodeless capacitor: 51 * 55mil (0805 ukuphakama komhlaba); Xa ukwi-line, ipad yi-50mil kunye ne-aperture yi-28mil;

5. Qaphela ukuba umgca wamandla kunye nomgca ophantsi kufuneka ube njenge-radial kangangoko kunokwenzeka, kwaye umgca wesignali awufanele ugxothwe.