Mwambiri, kupanga kwa PCB kumatchedwa Panelization kukulitsa mphamvu ya kupanga kwa SMT. Ndizinthu ziti zomwe ziyenera kusamaliridwa mu Msonkhano wa PCB? Tiyeni tiwone.

1. PCB bolodi chimango (clamping m’mphepete) ayenera kutengera chatsekedwa-kuzungulira kamangidwe kuonetsetsa kuti PCB bolodi sadzakhala opunduka pambuyo chili pa fixture;

2, PCB bolodi mawonekedwe pafupi kwambiri kuti lalikulu, analimbikitsa 2 × 2, 3 × 3 …… Jigsaw, koma osati mu Yin ndi Yang board;

3, PCB bolodi m’lifupi ≤260mm (SIEMENS mzere) kapena ≤300mm (FUJI mzere); Ngati kupereka kokhazikika kumafunika, m’lifupi × kutalika kwa bolodi ya PCB ≤125mm × 180mm;

4, bolodi lililonse laling’ono mu bolodi la PCB liyenera kukhala ndi mabowo osachepera atatu, 3≤ kabowo ≤6 mm, dzenje lokhala m’mphepete mwa 1mm siloledwa kutchera waya kapena kulumikizana;

5, pakati mtunda pakati kulamulira yaing’ono mbale pakati 75mm ~ 145mm;

6, mukamayika poyikirapo, nthawi zambiri pamalo oyimilira mozungulira malo otseguka a 1.5mm okulirapo kuposa ake;

7. Pasapezeke chida chachikulu kapena chowonjezera pafupi ndi malo olumikizirana pakati pa chimango chakunja ndi mbale yaying’ono yamkati, ndipo m’mphepete mwa zinthuzo ndi bolodi la PCB liyenera kukhala ndi malo opitilira 0.5mm kuti zitsimikizire kugwira ntchito bwino kwa chida chodulira;

8. Mabowo anayi otseguka amatsegulidwa pamakona anayi a chimango chakunja cha bolodi, ndi kabowo ka 4mm ± 0.01mm; Mphamvu ya dzenje liyenera kukhala lochepetsetsa kuti lisagwedezeke pokonza mbale zakumtunda ndi zapansi; Kutsegula ndi kulondola kwa malo kukhala okwera, khoma losalala lopanda burr;

9. Mwakutero, QFP yokhala ndi mipata yochepera 0.65mm iyenera kuyikidwa pamalo opendekera a chizindikiro cholozera cha PCB bolodi yonse ndikuyika pabwino pazida; Zizindikiro zoyimira ma board ang’onoang’ono a PCB ziyenera kugwiritsidwa ntchito awiriawiri ndikukonzedwa pamagulu azoyikika;

10, zigawo zikuluzikulu ziyenera kukhala ndi mizati yoyika kapena mabowo oyika, monga mawonekedwe a I / O, maikolofoni, mawonekedwe a batri, kusinthana kwakanthawi, mawonekedwe apamutu, mota, ndi zina zambiri.