Lapho uklama amaphedi e-PCB ku PCB board design , kuyadingeka ukuklama ngokuqinile ngokuhambisana nezidingo ezifanele kanye namazinga.Ngoba ekucubunguleni isichibi se-SMT, ukwakheka kwephedi ye-PCB kubaluleke kakhulu.Umklamo we-pad uzothinta ngokuqondile ukuthengiswa, ukuzinza nokudlulisa ukushisa kwezingxenye.Ihlobene nekhwalithi yokucubungula isichibi.Khona-ke liyini izinga lokuklama iphedi le-PCB? 1. Amazinga omklamo womumo nosayizi wamaphedi e-PCB: 1. Shayela umtapo wezincwadi wephakheji ojwayelekile we-PCB. 2. Uhlangothi olulodwa oluncane lwe-pad alukho ngaphansi kuka-0.25mm, futhi ububanzi obukhulu be-pad yonke abukho ngaphezu kwezikhathi ezi-3 zokuvula ingxenye. 3. Zama ukuqinisekisa ukuthi ibanga eliphakathi kwamaphethelo amaphedi amabili likhulu kuno-0.4mm. 4. Amaphedi anezimbobo ezingaphezu kuka-1.2mm noma amadayamitha ephedi angaphezu kuka-3.0mm kufanele aklanywe njengamaphedi amise okwedayimane noma amise okwequincunx. 5. Endabeni ye-wiring eminyene, kunconywa ukusebenzisa amapuleti okuxhuma oku-oval kanye ne-oblong.Ububanzi noma ububanzi obuncane bephedi yephaneli elilodwa ngu-1.6mm;iphedi yesekethe yamanje ebuthakathaka yebhodi enezinhlangothi ezimbili idinga kuphela ukwengeza u-0.5mm kububanzi bembobo.Iphedi elikhulu kakhulu lingabangela kalula ukushisela okuqhubekayo okungadingekile.
Iphedi ye-PCB ngosayizi ojwayelekile:
Imbobo engaphakathi yephedi ngokuvamile ayikho ngaphansi kuka-0.6mm, ngoba imbobo encane kuno-0.6mm akulula ukuyicubungula lapho ushaya idayidi.Ngokuvamile, ububanzi bephini lensimbi kanye no-0.2mm busetshenziswa njengobubanzi bembobo engaphakathi yephedi, njengobubanzi bephini lensimbi le-resistor Uma buyi-0.5mm, ububanzi bembobo yangaphakathi ye-pad buhambisana no-0.7mm. , futhi ububanzi bephedi buncike kububanzi bomgodi ongaphakathi.
Okwesithathu, amaphuzu okuklama okuthembekile kwamaphedi e-PCB:
1. I-Symmetry, ukuze kuqinisekiswe ibhalansi yokungezwani kwendawo ye-solder encibilikisiwe, amaphedi emikhawulweni yomibili kufanele afane.
2. Isikhala sephedi.Isikhala sephedi esikhulu kakhulu noma esincane sizodala ukonakala kokusoda.Ngakho-ke, qiniseka ukuthi ukuhlukana phakathi kwezingxenye eziphela noma izikhonkwane namaphedi kufanelekile.
3. Ubukhulu obusele bephedi, ubukhulu obusele bokuphela kwengxenye noma iphinikhodi kanye nephedi ngemva kokugqagqana kufanele kuqinisekise ukuthi i-solder joint ingenza i-meniscus.
4. Ububanzi bephedi kufanele bufane ngokuyisisekelo nobubanzi bethiphu yengxenye noma iphini.
Idizayini yephedi ye-PCB elungile, uma kunenani elincane le-skew ngesikhathi sokucutshungulwa kwe-patch, ingalungiswa ngenxa yokungezwani okungaphezulu kwe-solder encibilikisiwe ngesikhathi sokuphinda kufakwe i-solder.Uma idizayini yephedi ye-PCB ingalungile, ngisho noma indawo yokubeka inembe kakhulu, ukonakala kokusoda okufana nengxenye yesikhundla se-offset namabhuloho amisiwe kuzokwenzeka kalula ngemva kokuphinda kufakwe i-solder.Ngakho-ke, lapho uklama i-PCB, idizayini yephedi ye-PCB idinga ukuqaphela kakhulu.
1.6mm ugqinsi imaski yakamuva ye-solder eluhlaza ibhodi PCB ngomunwe wegolide Ibhodi lesifunda le-FR4 CCL
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