1.Plum blossom ncoo.
1: Lub qhov kho yuav tsum tsis yog-metallized.Thaum lub sij hawm yoj soldering, yog hais tias lub qhov kho yog ib tug metalized qhov, tin yuav thaiv lub qhov thaum lub sij hawm reflow soldering.
2. Kho qhov mounting qhov li quincunx pads feem ntau yog siv rau mounting qhov GND network, vim hais tias feem ntau PCB tooj liab yog siv los nteg tooj liab rau GND network.Tom qab quincunx qhov raug teeb tsa nrog PCB plhaub Cheebtsam, qhov tseeb, GND txuas nrog lub ntiaj teb.Qee lub sij hawm, lub plhaub PCB ua lub luag haujlwm tiv thaiv.Tau kawg, qee qhov tsis tas yuav txuas lub qhov txuas rau GND network.
3. Lub qhov hlau ntsia hlau tuaj yeem raug nyem, ua rau xoom ciam teb hauv av thiab tsis muaj av, ua rau lub cev tsis zoo.Lub plum blossom qhov, txawm li cas los xij qhov kev ntxhov siab hloov pauv, tuaj yeem ua kom lub hau ntsaws ruaj ruaj.
2. Hla paj ncoo.
Hla paj ntaub tseem hu ua thermal pads, kub cua pads, thiab lwm yam Nws muaj nuj nqi yog los txo cov cua kub dissipation ntawm lub ncoo thaum lub sij hawm soldering, thiaj li tiv thaiv lub virtual soldering los yog PCB tev tawm los ntawm overheat dissipation.
1 Thaum koj lub ncoo yog av.Cov qauv ntoo khaub lig tuaj yeem txo qhov chaw ntawm cov xaim hauv av, ua kom cov cua sov sai sai, thiab ua kom yooj yim vuam.
2 Thaum koj lub PCB xav tau lub tshuab tso thiab lub tshuab reflow soldering, tus ntoo khaub lig-puab ncoo tuaj yeem tiv thaiv PCB los ntawm tev tawm (vim tias yuav tsum muaj cua sov ntau dua los yaj cov tshuaj txhuam hniav)
3. teardrop ncoo
Teardrops yog ntau dhau kev sib txuas ntawm lub ncoo thiab cov xaim lossis cov xaim thiab ntawm.Lub hom phiaj ntawm teardrop yog kom tsis txhob muaj qhov sib cuag ntawm cov hlau thiab cov ntaub qhwv los yog cov hlau thiab cov ntawm thaum lub rooj tsav xwm Circuit Court raug ntaus los ntawm lub zog loj sab nraud.Disconnect, ntxiv rau, teeb teardrops tuaj yeem ua rau lub rooj tsav xwm PCB zoo nkauj dua.
Kev ua haujlwm ntawm teardrop yog kom tsis txhob muaj qhov txo qis ntawm cov teeb liab kab dav thiab ua rau muaj kev cuam tshuam, uas tuaj yeem ua rau kev sib txuas ntawm cov kab thiab cov khoom siv hauv ncoo ua ib qho kev hloov pauv, thiab daws qhov teeb meem uas qhov kev sib txuas ntawm lub ncoo thiab cov kab sib txuas. yooj yim tawg.
1. Thaum soldering, nws tuaj yeem tiv thaiv lub ncoo thiab tsis txhob poob ntawm lub ncoo vim muaj ntau yam soldering.
2. Ua kom muaj kev ntseeg siab ntawm kev sib txuas (kev tsim khoom tuaj yeem zam qhov tsis sib xws etching, tawg los ntawm kev sib txawv, thiab lwm yam)
3. Smooth impedance, txo qhov ntse dhia ntawm impedance
Hauv kev tsim ntawm lub rooj tsav xwm hauv Circuit Court, txhawm rau ua kom lub ncoo muaj zog thiab tiv thaiv lub ncoo thiab cov hlau tsis sib txuas thaum lub sij hawm tsim khoom ntawm lub rooj tsavxwm, ib zaj duab xis tooj liab feem ntau yog siv los npaj ib qho kev hloov pauv ntawm lub ncoo thiab cov hlau. , uas zoo li lub teardrop, yog li nws feem ntau hu ua Teardrops (Teardrops)
4. tso tawm iav
Koj puas tau pom lwm tus neeg hloov khoom siv hluav taws xob txhob txwm tshaj tawm sawtooth liab qab tooj liab ntawv ci nyob rau hauv hom hom inductance?Cov txiaj ntsig tshwj xeeb yog dab tsi?
Qhov no yog hu ua cov hniav tso tawm, tawm qhov khoob lossis qhov sib txawv.
Lub txim taws yog ib khub ntawm daim duab peb sab nrog cov kaum ntse ntse taw rau ib leeg.Qhov siab tshaj plaws ntawm cov ntiv tes yog 10mil thiab qhov tsawg kawg nkaus yog 6mil.Ib lub delta yog grounded, thiab lwm qhov yog txuas nrog lub teeb liab kab.Daim duab peb sab no tsis yog ib feem, tab sis yog tsim los ntawm kev siv tooj liab ntawv ci txheej hauv cov txheej txheem PCB.Cov duab peb sab no yuav tsum tau teem rau saum txheej ntawm PCB (componentside) thiab tsis tuaj yeem npog los ntawm lub npog ntsej muag.
Nyob rau hauv lub switching power supply surge test or ESD test, high voltage will be generated at two end of the common mode inductor and arcing will happen.Yog tias nws nyob ze rau cov khoom siv ib puag ncig, cov khoom siv nyob ib puag ncig yuav puas.Yog li ntawd, lub raj xa tawm los yog varistor tuaj yeem txuas nrog rau tib lub sijhawm kom txwv nws qhov hluav taws xob, yog li ua lub luag haujlwm ntawm arc extinguishing.
Cov txiaj ntsig ntawm kev tso cov cuab yeej tiv thaiv xob laim yog qhov zoo heev, tab sis tus nqi kuj tseem siab.Lwm txoj hauv kev yog ntxiv cov hniav tso tawm ntawm ob qho kawg ntawm hom hom inductor thaum lub sij hawm tsim PCB, kom cov inductor tso tawm los ntawm ob lub tswv yim tawm, tsis txhob tso tawm los ntawm lwm txoj hauv kev, kom qhov chaw nyob ib puag ncig thiab kev cuam tshuam ntawm cov khoom siv tom qab theem qis.
Qhov paug tawm tsis tas yuav tsum tau them nqi ntxiv.Nws tuaj yeem kos tau thaum kos lub pcb lub rooj tsavxwm, tab sis nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias hom kev paug tawm no yog qhov sib txawv ntawm huab cua, uas tsuas yog siv tau rau hauv ib puag ncig uas ESD qee zaus tsim.Yog tias nws yog siv nyob rau hauv lub sijhawm uas ESD tshwm sim ntau zaus, cov pa roj carbon deposits yuav raug tsim nyob rau ntawm ob peb lub ntsiab lus ntawm qhov paug tawm vim yog cov paug tawm tsis tu ncua, uas thaum kawg yuav ua rau luv luv Circuit Court ntawm qhov paug tawm thiab ua rau luv luv ntawm lub teeb liab. kab rau hauv av.Ua rau qhov system tsis ua haujlwm.