6. ISekethe eDityanisiweyo
6.1 Ipakethe yodidi lwe-SOIC ine-polarity.Iimpawu zePolarity :1) iribhoni, 2) isimboli, 3) iinotshi kunye negrooves, 4) i-bevel
6.2 IPACKAGE yohlobo lwe-SOP okanye lwe-QFP ine-polarity.I-Polarity ibhalwe :1) inotshi / i-groove ibhalwe, 2) Inqaku elinye lihlukile (ubukhulu / ukumila) ukusuka kwamanye amanqaku amabini / amathathu.
6.3 QFN uhlobo encapsulation has polarity.I-Polarity ibonisiwe :1) inqaku elinye lihlukile kwamanye amanqaku amabini (ubukhulu / imilo), 2) i-hypotenuse ebonisiwe, i-3) isimboli esibonisiwe (ibha /" + "uphawu / ichaphaza).
7. Uluhlu lweGridi yeBhola
7.1 Inxalenye yepolarity: inotshi/igroove/ichaphaza/isangqa;I-Polarity yebhodi ye-PCB: isangqa / ichaphaza / unobumba "1 okanye A" / uphawu lwe-bevel.Indawo ye-polarity yenxalenye ihambelana nendawo ye-polarity kwi-PCB.Indlela yokuchonga ukuxhathisa kwe-SMT
Ngokubanzi, kukho imibala ye-12 yemibala echasayo yeringi: omdaka, obomvu, o-orenji, omthubi, oluhlaza, oluhlaza okwesibhakabhaka, omfusa, ongwevu, omhlophe, omnyama, ogolide kunye nesilivere.Phakathi kwazo, imibala elishumi yokuqala imele i-1 ~ 9 (emnyama imele u-0), kwaye igolide kunye nesilivere ngokulandelelanayo zimele iindidi ezimbini zeempazamo (kunye okanye thabatha i-5% kwaye dibanisa okanye thabatha i-10%).
Imibala emibini yokuqala imele Amanani asulungekileyo.Ngokomzekelo, i-orange kunye nomnyama imele inombolo ye-30 (ingathethi ukuba ukuchasana yi-30 euro), kwaye umbala wesithathu we-ring umele inani le-zero.Umzekelo, ukuba umbala wesithathu umsesane obomvu, oko kuthetha inombolo 30 ilandelwa zero ezimbini, kunye nexabiso ukumelana lo ukumelana 30 00 euro (3k euros).
Umsesane wokugqibela wombala unokuba yigolide okanye isilivere.Ngokomzekelo, ukuba umsesane wombala wokugqibela uyisilivere, ukuchasana kokuchasana kuya kuba phakathi kwe-3000 ohms kunye okanye thabatha i-10% (ukumelana nokwenyani kokumelana kuya kuba nayiphi na ixabiso eliqinisekileyo phakathi kolu luhlu).
Ugwebo lwesakhono sobuchule be-SMT kunye nokuchongwa kwamandla
I-Capacitor yahlulwe kakhulu kwi-electrolytic capacitor kunye ne-wafer capacitor.Ubume be-capacitor ye-electrolytic yi-cylinder, kwaye i-cylinder surface iphawulwe kunye nobukhulu bayo be-capacitance, kwaye ine-polarity (unyawo olude luyi-potive pole, unyawo olufutshane luyipali engafanelekanga).
Kwelinye icala, i-wafer capacitance ayinayo i-polarity.Ngokuqhelekileyo ibunjwe njengesangqa kwaye iphawulwe ngamanani amathathu, phakathi kwayo idijithi yokuqala neyesibini imele ixabiso le-capacitance kwaye idijithi yesithathu imele inani le-zero, njenge-233, emele ixabiso le-capacitance ye-23000PF okanye i-0.023 micromethod.
I-NeoDen ibonelela ngezisombululo zomgca wendibano ye-SMT epheleleyo, kubandakanywa i-oven yokuqukuqela kwakhona kwe-SMT, umatshini wokuthengisa amaza, umatshini wokukhetha kunye nendawo, umshicileli we-solder paste, i-Oven yokuReflow, isilayishi se-PCB, isikhupheli se-PCB, i-chip mounter, umatshini we-SMT AOI, umatshini we-SMT SPI, i-SMT X- Umatshini we-Ray, izixhobo ze-SMT zokudibanisa, imveliso ye-PCB Izixhobo ze-SMT ezisetyenzisiweyo, njl.
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Ixesha lokuposa: Nov-06-2020