Nkhani
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Kukhudzika
Kuwonetsedwa kumatanthauza kuti pansi pa kuwala kwa ultraviolet kuwala, photoinitiator imatenga mphamvu ya kuwala ndikuwola kukhala ma radicals aulere, ndipo ma radicals aulere ndiye kuyambitsa photopolymerization monomer kuti achite polymerization ndi crosslinking reaction. Kuwonekera nthawi zambiri kumakhala ...Werengani zambiri -
Kodi pali ubale wotani pakati pa mawaya a PCB, kudzera mu dzenje ndi mphamvu yonyamula pano?
Kulumikizana kwamagetsi pakati pa zigawo za PCBA kumatheka kudzera mu waya wamkuwa wa zojambulazo ndi mabowo pagawo lililonse. Kulumikizana kwamagetsi pakati pa zigawo za PCBA kumatheka kudzera mu waya wamkuwa wa zojambulazo ndi mabowo pagawo lililonse. Chifukwa cha zinthu zosiyanasiyana...Werengani zambiri -
Ntchito yoyambitsa gawo lililonse la bolodi yozungulira ya PCB yamitundu ingapo
Multilayer circuit boards ali ndi mitundu yambiri yogwirira ntchito, monga: chitetezo, silk screen layer, sign layer, internal layer, etc. Kodi mumadziwa bwanji za zigawozi? Ntchito za gawo lililonse ndizosiyana, tiyeni tiwone zomwe ntchito za mulingo uliwonse ...Werengani zambiri -
Chiyambi ndi ubwino ndi kuipa kwa ceramic PCB board
1. N'chifukwa chiyani ntchito ceramic matabwa dera Wamba PCB nthawi zambiri zopangidwa ndi mkuwa zojambulazo ndi gawo lapansi kugwirizana, ndi gawo lapansi zakuthupi makamaka galasi CHIKWANGWANI (FR-4), phenolic utomoni (FR-3) ndi zipangizo zina, zomatira nthawi zambiri phenolic, epoxy. , etc. Pakukonza PCB chifukwa cha kupsinjika kwa kutentha...Werengani zambiri -
Infrared + otentha mpweya reflow soldering
M'katikati mwa zaka za m'ma 1990, panali chizolowezi chosinthira ku kutentha kwa infrared + kutentha kwa mpweya mu reflow soldering ku Japan. Imatenthedwa ndi 30% cheza cha infrared ndi 70% mpweya wotentha ngati chotengera kutentha. Uvuni wa infrared air reflow ovuni umaphatikiza bwino zabwino za infrared reflow ndi kukakamiza kuwongolera mpweya wotentha ...Werengani zambiri -
Kodi PCBA processing ndi chiyani?
Kukonza kwa PCBA ndi chinthu chomalizidwa cha bolodi lopanda kanthu la PCB pambuyo pa chigamba cha SMT, plug-in ya DIP ndi mayeso a PCBA, kuyang'anira khalidwe ndi ndondomeko ya msonkhano, yotchedwa PCBA. Gulu lopereka limapereka ntchito yokonza ku fakitale yaukadaulo ya PCBA, kenako ndikudikirira kutulutsa komalizidwa ...Werengani zambiri -
Etching
PCB board etching process, yomwe imagwiritsa ntchito njira zachikhalidwe zopangira mankhwala kuti iwononge malo osatetezedwa. Kukhala ngati kukumba ngalande, njira yotheka koma yosagwira ntchito. Mu ndondomeko ya etching, imagawidwanso mu ndondomeko yabwino ya filimu ndi ndondomeko yolakwika ya filimu. Njira yabwino yamakanema ...Werengani zambiri -
Lipoti Losindikizidwa la Circuit Board Global Market 2022
Osewera akulu pamsika wosindikizidwa wa board board ndi TTM Technologies, Nippon Mektron Ltd., Samsung Electro-Mechanics, Unimicron Technology Corporation, Advanced Circuits, Tripod Technology Corporation, DAEDUCK ELECTRONICS CoLtd., Flex Ltd., Eltek Ltd, ndi Sumitomo Electric Industries. . Globa...Werengani zambiri -
1. Phukusi la DIP
Phukusi la DIP (Dual In-line Package), lomwe limadziwikanso kuti ukadaulo wapawiri wapakatikati, limatanthawuza tchipisi tating'onoting'ono tomwe timapakidwa mumizere iwiri. Chiwerengerocho sichidutsa 100. Chip cha CPU cha DIP chili ndi mizere iwiri ya mapini omwe amafunika kulowetsedwa mu socket ya chip ndi...Werengani zambiri -
Kusiyana Pakati pa FR-4 Material ndi Rogers Material
1. Zinthu za FR-4 ndizotsika mtengo kuposa za Rogers 2. Zinthu za Rogers zimakhala ndi maulendo apamwamba poyerekeza ndi FR-4. 3. Df kapena dissipation factor of FR-4 material is high than the Rogers material, ndipo kutaya kwa chizindikiro kumakhala kwakukulu. 4. Pankhani ya kukhazikika kwa impedance, kuchuluka kwa mtengo wa Dk...Werengani zambiri -
Chifukwa chiyani muyenera kuphimba ndi golide wa PCB?
1. Pamwamba pa PCB: OSP, HASL, HASL Yopanda Lead, Tin Immersion, ENIG, Silver Immersion, Golide Wolimba, Kuyika golide pa bolodi lonse, chala chagolide, ENEPIG... OSP: mtengo wotsika, kugulitsa bwino, kusungirako movutikira, nthawi yochepa, umisiri wachilengedwe, kuwotcherera kwabwino, kosalala… HASL: nthawi zambiri ndi...Werengani zambiri -
Organic Antioxidant (OSP)
Nthawi zogwirira ntchito: Akuti pafupifupi 25% -30% ya ma PCB omwe amagwiritsa ntchito njira ya OSP pakadali pano, ndipo kuchuluka kwachulukira (ndikutheka kuti njira ya OSP tsopano yaposa malata opopera ndikuyika koyamba). Njira ya OSP itha kugwiritsidwa ntchito pa ma PCB otsika kwambiri kapena ma PCB apamwamba kwambiri, monga ma single-si...Werengani zambiri
