Robotic Car PCB los ua ke

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Lub khw muag khoom hluav taws xob tsheb yog qhov thib peb loj tshaj plaws hauv cheeb tsam ntawm PCB tom qab khoos phis tawj thiab kev sib txuas lus. Nrog rau kev hloov zuj zus mus thiab kev loj hlob ntawm lub tsheb los ntawm cov khoom siv tshuab hauv cov khoom siv hauv cov khoom siv hauv cov khoom siv high-tech ntawm kev txawj ntse, kev qhia ntawv thiab mechatronics, cov cuab yeej siv hluav taws xob tau siv dav hauv tsheb, txawm tias nws yog lub cav, chassis system, cov khoom siv hluav taws xob tau siv dav hauv tsheb. kev ruaj ntseg systems, cov ntaub ntawv systems, thiab nyob rau hauv lub tsheb ib puag ncig systems yam tsis muaj kev zam. Kev lag luam tsheb tau pom tseeb dhau los ua lwm qhov chaw ci ntsa iab hauv kev lag luam khoom siv hluav taws xob. Txoj kev loj hlob ntawm automotive electronics tau ib txwm tsav txoj kev loj hlob ntawm automotive PCBs.

Ntawm cov khoom siv tseem ceeb ntawm PCB niaj hnub no, automotive PCB tuav txoj haujlwm tseem ceeb. Txawm li cas los xij, vim qhov chaw ua haujlwm tshwj xeeb, kev nyab xeeb thiab siab tam sim no ntawm cov tsheb, nws muaj cov kev xav tau siab dua ntawm PCB kev ntseeg tau thiab kev hloov pauv ib puag ncig.

Hauv qab ntawm PCB muaj ob peb txheej zoo li no.

⑴ Substrates: Cov no yog cov khoom tshwj xeeb uas ua hluav taws xob tsawg. Cov substrates feem ntau siv los ua cov txheej txheem insulating ntawm ob txheej txheej tooj liab yog fluorine series resins, PPO lossis PPE resins thiab hloov kho epoxy resins, fluorine series dielectric substrates, PTFE, thiab lwm yam.

⑵ Copper: Ib txheej nyias ntawm cov ntawv ci tooj liab ntxiv los txhim kho cov thermal tsis kam thiab tam sim no nqa lub peev xwm ntawm PCB.

⑶Solder resist: feem ntau yog ntsuab solder resist, siv los insulate tooj liab nyob ntawm lwm yam ntaub ntawv conductive.

⑷ Silkscreen: Cov txheej txheem silkscreen kawg ntawm PCB, uas pab muab cov ntawv qhia rau ib feem. Silkscreen khaubncaws sab nraud povtseg pab txheeb xyuas cov ntsiab lus xeem, ntu lej, ceeb toom cov cim, logos thiab cov cim chaw tsim khoom.

Cov txheej txheem yooj yim saum toj no zoo nkauj npaum li qub rau txhua hom PCBs. Qhov tsuas yog qhov sib txawv ntawm nruj, flex, hlau core, nto mount los yog los ntawm lub qhov PCBs yog siv lub substrate. Cov neeg tsim khoom xaiv lub substrate tom qab txiav txim siab rau daim ntawv thov.

SMD txheej txheem

Kev sib dhos ib sab

Incoming inspection => silk screen solder paste (spot glue) => patch => drying (curing) => reflow soldering => cleaning => inspection =>rov ua dua

Ob tog sib dhos

A: Incoming material inspection => PCB's A side silk screen solder paste (spot glue) => SMD PCB B side silk screen paste (spot glue) => SMD => drying => reflow soldering ( It is better to only do the B side => cleaning => inspection =>rov ua dua).

B: Incoming material inspection => PCB's A-side screen printing solder paste (spot adhesive) => SMD => drying (curing) => A-side reflow soldering => cleaning => flip = PCB's B-side point SMT glue => SMD => curing => B-side wave soldering => cleaning => inspection =>kho)

Cov txheej txheem no yog tsim rau reflow soldering ntawm A sab ntawm PCB thiab yoj soldering ntawm B sab. Hauv SMD sib sau ua ke ntawm B sab ntawm PCB, cov txheej txheem no yuav tsum tau siv thaum tsuas yog SOT lossis SOIC (28) tus pins hauv qab no.

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