Cov ntaub ntawv siv rau siab - zaus board sampling tuaj yeem siv ncaj qha rau hauv cov txheej txheem ntau lawm raws li kev nruj, tab sis tsis yog txhua yam khoom siv coj mus kuaj tau ncaj qha rau kev tsim khoom loj. Lub hauv paus yog nyob ntawm seb cov khoom xaiv thaum lub sij hawm sampling yog tag nrho raws li cov qauv ntau lawm.
Core prerequisites uas yuav siv tau ncaj qha
100% locking ntawm cov khoom specifications: Cov qauv ua tiav, thickness, tooj liab ntawv ci hom, thiab semi-kho daim ntawv hom ntawm lub rooj tsavxwm thaum lub sij hawm sampling theem yuav tsum tau tag nrho raws li lub hom phiaj specifications rau huab hwm coj ntau lawm. Nws raug txwv tsis pub tsuas yog sau cov lus piav qhia tsis meej xws li "high-frequency board" txhawm rau tshem tawm qhov pheej hmoo ntawm kev pauv khoom los ntawm qhov chaw.
Sau cov ntaub ntawv traceability ntawm thawj batch: Thaum ua cov qauv, khaws cov thawj batch tooj ntawm lub rooj tsavxwm siv. Thaum lub sij hawm tsim khoom loj, cov neeg muag khoom yuav tsum muab cov ntaub ntawv ntawm tib lub npe thiab qib. Mature siab - zaus boards nrog Dk batch fluctuations tswj nyob rau hauv ± 0.05 (xws li Rogers RO4350B) yog nyiam kom tsis txhob muaj kev sib tw ntawm batches.
Ua kom tiav cov txheej txheem qhov rais validation ua ntej: Ua DFM tshuaj xyuas raws li cov qauv ntau lawm thaum lub sij hawm kuaj, tsis siv cov txheej txheem tsis zoo xws li 3/3mil kab dav thiab kab sib nrug. Khaws 1-2mil redundancy rau kab dav thiab kab sib nrug los xyuas kom meej tias cov qoob loo tuaj yeem khaws cia txawm tias muaj kev hloov pauv hauv cov txheej txheem ntau lawm.
Cov ntaub ntawv piv txwv tsis tuaj yeem siv ncaj qha rau hauv cov xwm txheej raug rau kev tsim khoom loj
Cov ntaub ntawv tshwj xeeb yog siv los ua piv txwv: Hauv qee qhov kev ua piv txwv, lwm cov boards yog siv los txo cov nqi, xws li hloov tus qauv tsim RO3003 nrog RO4350B, uas ua rau Dk qhov sib txawv ntawm 0.48. Kev tsim khoom ncaj qha yuav ua rau lub suab nrov zaus ntawm 77GHz radar kav hlau txais xov hloov los ntawm ntau dua 1.5GHz, uas ua rau tag nrho cov khoom pov tseg.
Cov khoom siv coj mus kuaj tsis muaj peev xwm ntau lawm: Cov qauv siv niche tshwj xeeb boards los ntawm lub Hoobkas cov khoom muag. Thaum lub sij hawm ntau lawm, cov khoom muag ntawm cov batch no yog tag, ua rau nws tsis yooj yim sua kom muaj kev ruaj ntseg khoom. Tom qab raug yuam kom hloov nrog cov laug cam zoo tib yam, qhov siab - zaus lub teeb liab nkag mus ncaj qha deteriorates ntau dua 30%.
Sampling thiab loj ntau lawm yog rau cov tuam txhab sib txawv: txawm tias cov qauv ntawm cov khoom zoo ib yam nkaus, tej zaum yuav muaj qhov sib txawv ntawm qhov etching raug thiab nias kub nkhaus ntawm cov chaw tsim khoom sib txawv, thiab cov cim tseem ceeb xws li kev ua tiav impedance thiab warpage yuav qhia qhov txawv txav, ua rau kev ua haujlwm tsis zoo.
Kev siv cov txheej txheem du ntawm cov ntaub ntawv los ntawm cov qauv mus rau kev tsim khoom loj
Qauv theem: ncaj qha xaiv cov ntaub ntawv qib ntau lawm, synchronously ua tiav impedance simulation thiab daim coupon kuaj, paub meej tias qhov ntsuas qhov tseem ceeb ntawm Dk / Df hauv lub hom phiaj zaus band ua tau raws li cov qauv tsim, yam tsis muaj kev cia siab rau cov nqi nominal hauv cov ntaub ntawv.
Me me batch sim ua theem: Siv cov khoom siv tib yam kom tiav 50-200 daim ntawm kev sim ntau lawm, xyuas cov impedance dispersion thiab thermal voj voog kev cia siab nyob rau hauv batch tej yam kev mob, paub meej tias cov txheej txheem stability raws li cov qauv, thiab ces mus rau loj-scale ntau lawm.
Loj ntau lawm solidification theem: Sau cov khoom tsis, compression curves, thiab etching tsis tau dhau cov qauv pov thawj rau hauv cov txheej txheem tswj cov ntaub ntawv. Txhua yam kev hloov pauv ntawm cov ntaub ntawv yuav tsum raug lees paub thoob plaws hauv tag nrho cov txheej txheem kom tsis txhob "piv txwv OK, batch overturning".