Wadanne batutuwa ya kamata a kula da su a ciki PCB pads?

Kushin wani nau’in rami ne, ƙirar kushin ya kamata ya kula da abubuwan da ke biyowa.

1. Diamita da girman rami na ciki: Ramin ciki na kushin ba kasa da 0.6mm ba, saboda ba abu bane mai sauƙin aiwatarwa lokacin da ramin bai wuce 0.6mm ba. Yawancin lokaci, diamita na fil ɗin ƙarfe da 0.2mm ana amfani dashi azaman ramin ciki na kushin. Idan diamita na karfe na juriya shine 0.5mm, ramin ramin ciki na kushin shine 0.7mm, kuma diamita na kushin ya dogara da diamita ramin ciki. Diamita na rami / kushin diamita yawanci: 0.4 / 1.5; 0.5 / 1.5;0.6 / 2; 0.8 / 2.5; 1.0 / 3.0; 1.2 / 3.5; 1.6/4. Lokacin da diamita na kushin ya zama 1.5 mm, don ƙara ƙarfin tsiri na kushin, tsayin da ba kasa da 1.5 mm ba, za a iya amfani da kushin madauwari mai tsayi 1.5 mm, irin wannan kushin ya fi yawa a ciki. fil kushin hadedde kewaye. Don diamita na pads fiye da iyakar teburin da ke sama, ana iya amfani da wannan dabara don zaɓar: rami mai diamita ƙasa da 0.4mm: D/D = 1.5-3; Ramuka masu diamita fiye da 2rran: D/D = 1.5-2 (inda: D shine diamita na pads kuma D shine diamita na ramukan ciki)

2. Nisa tsakanin gefen rami na ciki na kushin da gefen da aka buga ya kamata ya fi 1 mm, don kauce wa lahani na kushin yayin aiki.

3. Lokacin da wayar da aka haɗa tare da kushin ya yi ɗan ƙaramin ƙarfi, haɗin da ke tsakanin kushin da wayar an tsara shi zuwa siffar digo, wanda ba shi da sauƙi don kwasfa kushin, kuma waya da kushin ba su da sauƙi a cire haɗin.

4. Matsakaicin madaidaicin don gujewa zuwa cikin madaidaicin kusurwa ko babban yanki na foil na jan karfe. Matsakaicin kusurwa zai haifar da matsalolin sayar da igiyoyin ruwa, kuma akwai haɗarin haɗuwa, babban yanki na foil na tagulla saboda tsananin zafi zai haifar da walƙiya mai wahala.