6. Potoloho e Kopantsoeng
6.1 Sephutheloana sa mofuta oa SOIC se na le polarity.Matšoao a polarity :1) ribone, 2) letšoao, 3) li-notch le li-grooves, 4) bevel
6.2 PACKAGE ea mofuta oa SOP kapa QFP e na le polarity.Polarity e ngotsoeng :1) notch/groove e ngotsoe, 2) Ntlha e le 'ngoe e fapane (boholo / sebōpeho) ho tloha ho tse ling tse peli / tse tharo.
6.3 QFN mofuta encapsulation na polarity.Polarity e bontšitsoeng: 1) ntlha e le 'ngoe e fapane le lintlha tse ling tse peli (boholo / sebōpeho), 2) hypotenuse e bontšitsoeng, 3) letšoao le bontšitsoeng (bar/" + "letšoao / letheba).
7. Sehlopha sa Grid Array
7.1 Polarity ea karolo: notch/groove/dot/circle;Polarity ea boto ea PCB: selikalikoe / letheba / tlhaku "1 kapa A" / letšoao la bevel.Sebaka sa polarity sa karolo se lumellana le ntlha ea polarity ho PCB.Mokhoa oa ho tsebahatsa khanyetso ea SMT
Ka kakaretso, ho na le mebala e 12 ea mebala e hanyetsanang le mehele: e sootho, e khubelu, ea lamunu, e mosehla, e tala, e putsoa, pherese, e putsoa, e tšoeu, e ntšo, khauta le silevera.Har'a tsona, mebala e leshome ea pele e emela 1 ~ 9 (e ntšo e emela 0), 'me khauta le silevera ka ho latellana li emela mefuta e' meli ea liphoso (hammoho kapa ho tlosa 5% le ho eketsa kapa ho tlosa 10%).
Mebala ea pele e 'meli e emetse Lipalo tse hloekileng.Ka mohlala, lamunu le batsho li emela palo ea 30 (ha ho bolele hore khanyetso ke li-euro tse 30), 'me selikalikoe sa boraro sa mebala se emela palo ea zero.Ka mohlala, haeba selikalikoe sa 'mala oa boraro se khubelu, se bolela hore nomoro ea 30 e lateloa ke zero tse peli,' me boleng ba khanyetso ea khanyetso ena ke 30 00 euros (3k euro).
Lesale la ho qetela la 'mala ke khauta kapa silevera.Ka mohlala, haeba selikalikoe sa 'mala oa ho qetela ke silevera, ho hanyetsa ha khanyetso ho tla ba pakeng tsa 3000 ohms hammoho kapa ho fokotsa 10% (ho hanyetsa ha' nete ho hanyetsa ho tla ba leha e le efe ea bohlokoa ka har'a mefuta ena).
SMT capacitance polarity kahlolo le boitsebiso ba bokhoni
Capacitor e arotsoe haholo ka electrolytic capacitor le wafer capacitor.Sebopeho sa electrolytic capacitor ke cylinder, 'me holim'a silindara ea eona e tšoauoa ka boholo ba eona,' me e na le polarity (leoto le lelelele ke palo e ntle, leoto le lekhutšoanyane ke palo e fosahetseng).
Ka lehlakoreng le leng, capacitance ea wafer ha e na polarity.Ka kakaretso e bōpehile joaloka selikalikoe 'me e tšoauoa ka Lipalo tse tharo, har'a tsona linomoro tsa pele le tsa bobeli li emela boleng ba capacitance' me nomoro ea boraro e emela palo ea li-zero, tse kang 233, e emelang boleng ba capacitance ea 23000PF kapa 0,023 micromethod.
NeoDen e fana ka tharollo ea mohala oa kopano ea SMT e felletseng, ho kenyeletsoa onto ea SMT reflow, mochini o hlabollang, mochini o khethang le oa ho beha, mochini oa khatiso oa solder, Oven ea Reflow, PCB loader, PCB unloader, chip mounter, mochini oa SMT AOI, mochini oa SMT SPI, SMT X- Mochini oa Ray, lisebelisoa tsa mohala oa kopano ea SMT, lisebelisoa tsa tlhahiso ea PCB Lisebelisoa tsa SMT, joalo-joalo mochini ofe kapa ofe oa SMT oo u ka o hlokang, ka kopo ikopanye le rona bakeng sa tlhaiso-leseling e batsi:
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Nako ea poso: Nov-06-2020