Lub bar rau cov khoom siv hluav taws xob hauv kev siv tsheb yog teeb tsa los ntawm qhov tsis ua tiav, tsis yog los ntawm cov nqi sib tw. Thaum lub voj voog hloov pauv tau tswj lub rooj zaum qhov chaw sensor lossis txuas lub koob yees duab module rau tus tsav tsheb - kev pabcuam processor, qhov sib txawv ntawm qhov tsis ua haujlwm me me thiab kev nyab xeeb- qhov tsis ua haujlwm tseem ceeb heev. IATF 16949 thiab AEC-Q100 txhais cov kev tswj xyuas zoo thiab cov txheej txheem tsim nyog, tab sis rau lub rooj tsav xwm nws tus kheej, IPC/JPCA-6202 Chav Kawm 3 yog cov txheej txheem hauv paus. Ntawm CSNT-EMS hauv Dongguan, peb tau muab cov tsheb sib dhos rau ADAS lub koob yees duab modules, cov cuab yeej digital pawg, thiab lub cev tswj lub computer, thiab kev tsim nyog taug kev rau txhua daim ntawv thov qhia peb qee yam sib txawv ntawm qhov OEMs tsheb tiag tiag xav tau.
Vim li cas Automotive Applications Demand Class 3 Per IPC/JPCA-6202
Cov neeg siv khoom siv hluav taws xob tuaj yeem zam tus menyuam mos tuag cov nqi uas cov tuam txhab tsheb yuav tsis txais. Kev lag luam automotive cia siab tias qhov tsis ua haujlwm ntsuas hauv ib feem ntawm ib lab, tsis yog feem pua. IPC/JPCA-6202 Chav Kawm 3 muab qhov no los ntawm kev nruj dua tus neeg xyuas pib nick tolerances, yuav tsum tau soj ntsuam 100 feem pua ntawm flex zones, thiab xoom-tolerance delamination.
Tus neeg xyuas pib nick kam rau ua rau Chav Kawm 3 yog wl tsawg dua lossis sib npaug rau ib qho -peb ntawm kab dav. Nyob rau hauv ib lub voj voog uas muaj kev vibration thiab thermal cycling, ib tug nick uas ua tau raws li Class 2 cov qauv (wl tsawg dua los yog sib npaug rau ib qho -ib nrab kab dav) tuaj yeem nthuav tawm rau qhib Circuit Court hauv 1,000 txog 2,000 teev ntawm kev pabcuam tsheb.
Thermal cycling compounds qhov teeb meem. Lub tsheb sib dhos hauv qab lub hood pom qhov kub thiab txias ntawm qhov kub ntawm qhov kub ntawm 40 ° C mus rau 125 ° C. IPC/JPCA-6202 tsis qhia txog qhov tsawg kawg nkaus lub voj voog suav rau thermal cycling tsim nyog; qhov no feem ntau txhais los ntawm lub tsheb OEM raws li kev pabcuam lub neej. Chav kawm 2 tev lub zog tsawg kawg nkaus ntawm 0.49 N ib hli rau cov neeg siv khoom thiab 0.34 N ib hli rau cov npog npog yog qhov tau txais, tab sis tsuas yog thaum ua ke nrog cov txheej txheem tswj xyuas kom muaj kev sib txawv ntawm lamination thoob plaws thaj tsam ntawm pawg thawj coj saib.
Kev xaiv cov khoom siv rau Automotive Applications
Polyimide (PI) substrates yog thawj daim ntawv thov tsheb vim lawv cov thermal ua haujlwm. Cov iav hloov pauv kub ntawm PI feem ntau yog siab tshaj 250 degrees Celsius, uas muab cov npoo tiv thaiv qhov kub siab pom hauv cav bay qhov sib thooj daim ntawv thov.
Panasonic R-F777 yog ib qho kev xaiv PI substrate. Nws nominal 50-micrometer PI thickness thiab 12-micrometer tooj liab xa yooj yim nrog txaus dielectric zog. Lub tev lub zog ntawm 0.525 N ib hli dhau ntawm IPC / JPCA-6202 Chav Kawm 2 yam tsawg kawg nkaus thiab tshem tawm Chav Kawm 3.
Rau automotive lub koob yees duab modules thiab siab - cov ntaub ntawv txuas ceev, lub dielectric zog ntawm cov substrate teeb meem ntau npaum li txhua yam muaj zog. DuPont Pyralux AK nrog DK 3.4 thiab Df 0.004 muab kev tswj hwm impedance kev ua tau zoo nyob rau hauv cov qauv hloov tau, txawm tias tus nqi them nqi ntawm 40 txog 60 feem pua ntawm cov qauv PI.
Coverlay xaiv rau automotive yuav tsum suav rau thermal kuj. Taiflex FHK0515 halogen-dawb coverlay tuav cov txheej txheem lamination profiles, tab sis yog hais tias lub rooj sib txoos yuav pom qhov kub thiab txias siab tshaj 150 degrees Celsius, yuav tsum muaj ib tug siab - kub nplaum system.
Automotive FPC cross-section uas qhia ntau- txheej txheej nrog thaiv txheej
Surface Finish for Automotive: ENIG thiab Hard Gold
ENIG yog tus qauv rau feem ntau daim ntawv thov tsheb. Cov npib tsib xee thickness ntawm 3 mus rau 6 micrometers thiab kub thickness ntawm 0.05 mus rau 0.125 micrometers muab lub txee lub neej thiab solderability yuav tsum tau rau cov rooj sib txoos uas yuav zaum nyob rau hauv cov lus nug rau rau mus rau kaum ob lub hlis ua ntej lub tsheb sib dhos.
Rau cov tsheb sib txuas nrog cov kev xav tau siab mating, nyuaj kub plating ntawm 0.5 txog 1.0 micrometers yam tsawg kawg nkaus. Qhov no siv tau rau cov laug cam nrog ZIF connectors lossis tus pin-header interfaces uas pom cov phooj ywg rov ua dua- thiab- kev ua haujlwm tsis sib haum xeeb dhau lub tsheb ua haujlwm.
OSP feem ntau tsis haum rau tsheb vim tias qhov ua tiav tsis muaj sia nyob ntev ntev - qhov kub thiab txias cia lub sij hawm muaj nyob rau hauv cov khoom siv tsheb.
ENIG vs hard kub nto tag hla-section rau tsheb txuas
Kev huv huv thiab Ionic Contamination Standards
Automotive electronics ntsib cov teeb meem ya raws thiab kev sib kis uas cov neeg siv khoom siv hluav taws xob tsis ua. IPC-TM-650 Txoj Kev 2.3.28B ntsuas ionic contamination nyob rau hauv cov nqe lus ntawm sodium chloride sib npaug. Qhov kev txwv rau tsheb yog 1.2 micrograms ib square centimeter lossis tsawg dua.
Qhov no yog tib qho kev kis kab mob uas tau teev tseg rau cov khoom siv kho mob, uas cuam tshuam txog kev cia siab rau kev cia siab hauv kev siv tsheb. Qee lub tsheb OEMs siv txawm tias nruj dua nyob rau hauv kev txwv rau kev nyab xeeb - circuits tseem ceeb.
Flex kuaj rau tsheb yuav tsum simulate cov kev pabcuam tiag tiag. IPC-TM-650 Method 2.4.9.1 suav nrog dynamic flex testing, tab sis yog tias koj daim ntawv thov tshwj xeeb cuam tshuam nrog lub vojvoog khoov tshwj xeeb lossis flex cycle profile, koj yuav tsum tau txheeb xyuas cov kev cai sib tw nrog koj cov chaw tsim khoom.
Tsim nyog Koj Lub Tsheb FPC Chaw Muag Khoom
Automotive kev tsim nyog yog ntau- cov txheej txheem. Ua ntej, paub meej tias koj tus neeg muag khoom tuav IATF 16949 ntawv pov thawj. Qhov thib ob, thov PPAP cov ntaub ntawv suav nrog cov txheej txheem kev khiav dej num, PFMEA, thiab cov phiaj xwm tswj. Thib peb, lees paub tias tus neeg xa khoom tuaj yeem muab cov ntaub ntawv qhia txog qhov loj me ntawm IPC / JPCA-6202 Chav Kawm 3 rau thawj kab lus piv txwv.
Peb tau pom tias cov kev pabcuam tsheb zoo tshaj plaws koom nrog cov chaw tsim khoom thaum lub sijhawm tsim, tsis yog tom qab. Kev koom tes thaum ntxov tso cai rau cov chaw tsim khoom lag luam chij cov khoom siv los yog cov teeb meem kam rau ua ua ntej kev cog lus, uas zam kev hloov pauv kev tsim khoom kim heev tom qab pib tsim khoom.
