6. Isku-dhafka wareegga
6.1 Baakadaha nooca SOIC ayaa leh daraf.Calaamadaha cirifka:1) xarashka, 2) calaamada, 3) guntimaha iyo jeexjeexyada, 4) gariir
6.2 Xirmada SOP ama nooca QFP waxay leedahay midab.Polarity calaamadeysan:1) darajo/jeexdin calaamadeysan, 2) Hal dhibic ayaa ka duwan (xajmiga/qaabka) labada/saddexda dhibcood ee kale.
6.3 QFN nooca koofiyadaha ayaa leh midab.Polarity tilmaamay:1) hal dhibic ayaa ka duwan labada dhibcood ee kale (xajmiga/qaabka), 2) hypotenuse tilmaamay, 3) calaamad muujinaysa (bar/"+"calaamadaha/dhibcaha).
7. Qalabaynta Kubbada
7.1 Qaybta polarity: darajo/jeexdin/dhibic/goobo;Polarity ee guddiga PCB: goobada/dhibic/xaraf "1 ama A"/calaamadaynta bevel.Barta polarity ee qaybtu waxay u dhigantaa barta polarity ee PCB-ga.Habka aqoonsiga iska caabinta SMT
Guud ahaan, waxaa jira 12 midab oo ah caabiyeyaasha giraanta midabka: bunni, casaan, oranji, jaalle, cagaar, buluug, guduud, cawl, caddaan, madow, dahab iyo qalin.Waxaa ka mid ah, tobanka midab ee ugu horreeya waxay ka dhigan yihiin 1 ~ 9 (madow wuxuu u taagan yahay 0), dahabka iyo qalinkuna waxay u kala horreeyaan laba nooc oo khalad ah (oo lagu daray ama laga jaray 5% iyo lagu daray ama laga jaray 10%).
Labada midab ee hore waxay matalaan Tiro saafi ah.Tusaale ahaan, oranji iyo madow waxay u taagan yihiin lambarka 30 (ma dhihin iska caabintu waa 30 euro), giraanta midabka saddexaadna waxay u taagan tahay tirada eber.Tusaale ahaan, haddii giraanta midabka saddexaad uu casaan yahay, waxay la macno tahay in lambarka 30 uu raacayo laba eber, qiimaha iska caabbintani waa 30 00 euro (3k euro).
Giraanta midabka ugu dambeeya waa dahab ama qalin.Tusaale ahaan, haddii giraanta midabka ugu dambeeya uu yahay qalin, caabbinta caabbinta waxay noqon doontaa inta u dhaxaysa 3000 ohms oo lagu daray ama laga jaray 10% (caabbinta dhabta ah ee caabbinta waxay noqon doontaa qiimo kasta oo qeexan oo ka mid ah xadkan).
Awoodda SMT xukunka polarity iyo aqoonsiga awoodda
Capacitor waxa inta badan loo kala qaybiyaa kapacitor electrolytic iyo capacitor wafer.Qaabka capacitor-ka korantada (electrolytic capacitor) waa dhululubo, oogada dhululubada waxaa lagu calaamadeeyay cabirka awoodeeda, waxayna leedahay polarity (cagta dheer waa tiirka togan, cag gaaban waa tiirka taban).
Dhanka kale, awoodda wafer-ka ma laha polarity.Guud ahaan waxa loo qaabeeyey sida goobada oo kale waxaana lagu calaamadeeyay saddex Nambar, kuwaas oo ay ka mid yihiin lambarada koowaad iyo labaadba waxay ka dhigan yihiin qiimaha awoodda iyo tirada saddexaadna waxay u taagan tahay tirada eber, sida 233, taasoo ka dhigan qiimaha awoodda 23000PF ama 0.023 micromethod.
NeoDen wuxuu bixiyaa xalal buuxa oo SMT-ga ah, oo ay ku jiraan foornada dib-u-soo-celinta SMT, mishiinka alxanka, mashiinka soo-qaadista, daabacaadda koollada, foornada dib-u-soo-celinta, xamuulka PCB, soo-dejinta PCB, qalabka-fure, mashiinka SMT AOI, mashiinka SMT SPI, SMT X- Mashiinka Ray, Qalabka laysugu yimaado ee SMT, PCB wax soo saarka Qalabka SMT, iwm nooc kasta oo mashiinnada SMT ah ee aad u baahan karto, fadlan nala soo xidhiidh wixii macluumaad dheeraad ah:
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Shabakaddawww.smtneoden.com
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Waqtiga boostada: Nov-06-2020