NeoDen IN12 Reflow Cub
1. Reflow qhov cubNyob rau hauv txhua cheeb tsam kub kub thiab saw ceev stability, tuaj yeem nqa tawm tom qab lub cub tawg thiab ntsuas qhov kub thiab txias, los ntawm txias pib lub tshuab mus rau qhov kub thiab txias feem ntau nyob rau hauv 20 ~ 30 feeb.
2. Cov kws tshaj lij ntawm SMT cov kab ntau lawm yuav tsum kaw qhov cub kub qhov chaw thiab cov saw ceev txhua hnub los yog rau txhua yam khoom, thiab ua cov kev ntsuas ntsuas kub ntawm qhov cub hluav taws xob ntsuas qhov ntsuas kub tsis tu ncua los saib xyuas kev ua haujlwm ib txwm muaj.reflow soldering.IPQC yuav tsum ua kev soj ntsuam thiab saib xyuas.
3. Lead-free solder paste kub nkhaus qhov yuav tsum tau muaj:
3.1 Kev teeb tsa ntawm qhov kub thiab txias yog raws li nram no:
Qhov pom zoo nkhaus yog muab los ntawm tus neeg muab tshuaj txhuam solder.
B. Cov ntaub ntawv PCB, qhov loj thiab tuab.
C. Ceev thiab qhov loj ntawm cov khoom, thiab lwm yam.
3.2 Qhov yuav tsum tau ua rau qhov kub tsis muaj hlau lead hauv qhov cub:
3.2.1.Qhov tseeb ncov kub yog tswj los ntawm 243 ℃ mus rau 246 ℃, thiab tsis muaj BGA thiab QFN IC nyob rau hauv 100 qhov chaw, thiab tsis muaj cov khoom nrog ncoo loj hauv 3MM.
3.2.2.Rau cov khoom lag luam nrog qhov loj ntawm IC, QFN, BGA thiab PAD saum 3MM thiab qis dua 6MM, qhov ntsuas kub siab yuav tsum tau tswj ntawm 245-247 degrees.
3.2.3 Rau qee cov khoom tshwj xeeb PCB nrog IC, QFN, BGA lossis PCB board thickness ntau dua 2MM thiab PAD loj dua 6MM, qhov ntsuas kub siab tuaj yeem tswj tau ntawm 247 txog 252 degrees raws li qhov xav tau tiag tiag.
3.2.4 Thaum cov phaj tshwj xeeb xws li FPC mos phaj thiab txhuas lub hauv paus phaj lossis cov khoom muaj cov kev xav tau tshwj xeeb, nws yuav tsum raug kho raws li qhov xav tau tiag tiag (cov lus qhia txheej txheem khoom tshwj xeeb, uas yuav tsum tau tswj raws li cov txheej txheem qhia)
Lus Cim: Hauv kev ua haujlwm tiag tiag, yog tias muaj qhov txawv txav hauv qhov cub, SMT cov kws tshaj lij thiab cov kws ua haujlwm yuav muab cov lus qhia tam sim.3.3 Cov ntsiab lus tseem ceeb ntawm qhov kub thiab txias:
A. Preheating cheeb tsam: qhov preheating nqes hav yog 1 ~ 3 ℃ / SEC, thiab qhov kub yog nce mus rau 140 ~ 150 ℃.
B. Qhov ntsuas kub tsis tu ncua: 150 ℃ ~ 200 ℃, rau 60 ~ 120 vib nas this
C. Reflux cheeb tsam: saum toj no 217 ℃ rau 40 ~ 90 vib nas this, nrog ncov tus nqi ntawm 230 ~ 255 ℃.
D. Qhov chaw txias: qhov chaw txias txias yog tsawg dua 1 ~ 4 ℃ / SEC (tshwj tsis yog PPC thiab aluminium substrate, qhov kub thiab txias nyob ntawm qhov tseeb)
Post lub sij hawm: Jul-06-2021