1. Phukusi lofewa la COB ndi chiyani
Ogwiritsa ntchito maukonde osamala atha kupeza kuti pama board ena adera pali chinthu chakuda, ndiye chinthu ichi ndi chiyani?Chifukwa chiyani ili pa board board?Kodi zotsatira zake n'zotani?Ndipotu, uwu ndi mtundu wa phukusi.Nthawi zambiri timachitcha "paketi yofewa".Akuti phukusi zofewa kwenikweni ndi "zovuta", ndipo zinthu zake constituent ndi epoxy utomoni., Nthawi zambiri timawona kuti malo olandirira mutu wolandira nawonso ndi wazinthu izi, ndipo chip IC ili mkati mwake.Njirayi imatchedwa "kugwirizanitsa", ndipo nthawi zambiri timatcha "kumanga".

Iyi ndi njira yolumikizira waya popanga chip.Dzina lake lachingerezi ndi COB (Chip On Board), ndiye kuti, chip pa bolodi.Ichi ndi chimodzi mwamakina opangira chip opanda kanthu.Chipcho chimamangirizidwa ndi epoxy resin.Wokwera pa bolodi PCB kusindikizidwa dera, ndiye n'chifukwa chiyani ena matabwa dera alibe mtundu uwu wa phukusi, ndipo makhalidwe a mtundu uwu wa phukusi?

2. Zina za phukusi lofewa la COB
Ukadaulo wamapaketi wofewa wamtunduwu nthawi zambiri umakhala wokwera mtengo.Monga choyikapo chosavuta chopanda kanthu, kuti muteteze IC mkati kuti zisawonongeke, kuyika kwamtunduwu nthawi zambiri kumafuna kuumba kwa nthawi imodzi, komwe nthawi zambiri kumayikidwa pazithunzi zamkuwa za board board.Ndilozungulira ndipo mtundu wake ndi wakuda.Ukadaulo wamapaketiwa uli ndi zabwino zake zotsika mtengo, kupulumutsa malo, kuwala ndi kuonda, kutulutsa bwino kwa kutentha, komanso njira yosavuta yopangira.Magawo ambiri ophatikizika, makamaka mabwalo otsika mtengo, amangofunika kuphatikizidwa munjira iyi.Chip chozungulira chimatsogoleredwa ndi mawaya ambiri azitsulo, ndiyeno amaperekedwa kwa wopanga kuti aike chip pa bolodi la dera, ndikugulitsa ndi makina, ndiyeno perekani guluu kuti likhale lolimba komanso lolimba.

3. Nthawi zofunsira
Chifukwa phukusi lamtunduwu lili ndi mawonekedwe akeake, limagwiritsidwanso ntchito m'mabwalo ena amagetsi, monga ma MP3 osewera, zida zamagetsi, makamera a digito, zotonthoza zamasewera, ndi zina zambiri, pofunafuna mabwalo otsika mtengo.
M'malo mwake, kuyika kofewa kwa COB sikungokhala ku tchipisi, kumagwiritsidwanso ntchito kwambiri mu ma LED, monga gwero la kuwala kwa COB, lomwe ndi ukadaulo wophatikizika wowunikira womwe umalumikizidwa mwachindunji pagawo lachitsulo cha galasi pa chipangizo cha LED.