Ua ntej – Qhov yuav tsum tau muaj rau PCB qhov sib txawv

1. Qhov sib nrug ntawm cov neeg xyuas pib: qhov tsawg kawg ntawm kab sib nrug kuj yog kab rau kab, thiab qhov kev ncua deb ntawm cov kab thiab cov ntaub qhwv yuav tsum tsis pub tsawg dua 4MIL. Los ntawm qhov kev xav ntawm kev tsim khoom, qhov loj dua qhov zoo dua yog tias muaj kev tso cai. Feem ntau, 10 MIL yog qhov ntau.
2. Pad lub qhov taub thiab lub ncoo dav: raws li qhov teeb meem ntawm PCB chaw tsim tshuaj paus, yog hais tias lub ncoo qhov taub yog mechanically drilled, qhov tsawg kawg nkaus yuav tsum tsis txhob tsawg tshaj li 0.2 hli; Yog tias siv laser drilling, qhov tsawg kawg nkaus yuav tsum tsis pub tsawg dua 4mil. Lub qhov taub qhov siab ntev yog qhov sib txawv me ntsis raws li cov phiaj sib txawv, thiab tuaj yeem tswj tau li ntawm 0.05mm feem ntau; Qhov tsawg kawg nkaus ncoo dav yuav tsum tsis pub tsawg tshaj 0.2 hli.
3. Qhov sib nrug ntawm cov ntaub qhwv: Raws li kev ua haujlwm ntawm PCB cov tuam txhab, qhov sib nrug yuav tsum tsis pub tsawg dua 0.2MM. 4. Qhov kev ncua deb ntawm daim ntawv tooj liab thiab phaj ntug yuav tsum tsis pub tsawg tshaj 0.3 hli. Nyob rau hauv cov ntaub ntawv ntawm qhov loj-qhov chaw tooj liab nteg, feem ntau yog ib sab sab hauv ntawm lub phaj ntug, uas feem ntau yog teem li 20mil.

– Tsis muaj hluav taws xob kev nyab xeeb nyob deb

1. Qhov dav, qhov siab thiab qhov sib nrug ntawm cov cim: Rau cov cim luam tawm ntawm lub vijtsam txhob lo lo ntxhuav, cov txiaj ntsig zoo li 5/30 thiab 6/36 MIL feem ntau yog siv. Vim tias thaum cov ntawv nyeem me dhau lawm, kev ua haujlwm thiab luam ntawv yuav plam.
2. Kev ncua deb ntawm silk screen mus rau ncoo: txhob lo lo ntxhuav npo yog tsis tso cai rau mount ncoo. Vim hais tias yog tias cov ntaub qhwv npog npog nrog lub ntsej muag lo lo ntxhuav, lub ntsej muag txhob lo lo ntxhuav tsis tuaj yeem coated nrog tin, uas cuam tshuam rau kev sib dhos ntawm cov khoom. Feem ntau, cov chaw tsim khoom PCB xav tau qhov chaw ntawm 8mil. Yog tias thaj tsam ntawm qee qhov PCB boards ze heev, qhov sib nrug ntawm 4MIL tau txais. Yog tias lub vijtsam txhob lo lo ntxhuav npog cov ntaub qhwv ntsej muag thaum tsim, PCB cov chaw tsim khoom yuav cia li tshem tawm cov ntawv lo lo ntxhuav sab laug ntawm daim ntawv sib txuas thaum tsim khoom los xyuas kom meej cov tin ntawm cov ntaub qhwv.
3. 3D qhov siab thiab kab rov tav qhov sib nrug ntawm cov qauv siv tshuab: Thaum mounting Cheebtsam ntawm PCB, xav txog seb qhov kev taw qhia kab rov tav thiab qhov chaw siab yuav tsis sib haum nrog lwm cov qauv siv tshuab. Yog li ntawd, thaum lub sij hawm tsim, nws yog tsim nyog los xav txog tag nrho cov adaptability ntawm qhov chaw qauv ntawm lub Cheebtsam, raws li zoo raws li nruab nrab ntawm lub tiav lawm PCB thiab cov khoom plhaub, thiab cia ib tug ruaj ntseg chaw rau txhua lub hom phiaj. Cov saum toj no yog qee qhov kev ncua deb rau PCB tsim.

Yuav tsum tau rau ntawm high-density thiab high-ceev multilayer PCB (HDI)

Nws feem ntau muab faib ua peb pawg, uas yog lub qhov muag qhov muag, qhov faus thiab hauv qhov
Embedded qhov: yog hais txog lub qhov txuas uas nyob rau hauv txheej txheej ntawm lub rooj tsav xwm luam tawm, uas yuav tsis txuas mus rau saum npoo ntawm lub rooj tsav xwm luam tawm.
Los ntawm lub qhov: Lub qhov no dhau los ntawm tag nrho lub rooj tsav xwm Circuit Court thiab tuaj yeem siv rau kev sib txuas sab hauv lossis raws li kev teeb tsa thiab qhov chaw ntawm cov khoom.
Qhov qhov muag tsis pom kev: Nws yog nyob rau sab saum toj thiab hauv qab ntawm cov ntawv luam tawm Circuit Board, nrog rau qhov tob, thiab siv los txuas cov qauv saum npoo thiab cov qauv hauv qab.

Nrog rau kev nce siab ceev thiab miniaturization ntawm high-end khoom, kev txhim kho tas mus li ntawm semiconductor integrated circuit integrated thiab ceev, cov kev xav tau ntawm cov ntawv luam tawm yog siab dua. Cov xaim ntawm PCB yog nyias thiab nqaim, qhov sib txuas ntawm qhov sib txuas yog siab dua thiab siab dua, thiab qhov ntawm lub PCB yog me dua thiab me dua.
Siv lub qhov muag tsis pom laser ua lub ntsiab micro ntawm lub qhov yog ib qho ntawm cov thev naus laus zis tseem ceeb ntawm HDI. Lub qhov muag tsis pom laser qhov nrog me me aperture thiab ntau lub qhov yog ib txoj hauv kev zoo kom ua tiav cov hlau ntom ntom ntawm HDI board. Raws li muaj ntau lub qhov muag tsis pom laser raws li cov ntsiab lus hauv HDI boards, kev ntseeg siab ntawm laser qhov muag tsis pom qhov ncaj qha txiav txim siab qhov kev ntseeg ntawm cov khoom.

Zoo li lub qhov tooj
Cov cim tseem ceeb muaj xws li: tooj liab thickness ntawm kaum, tooj liab thickness ntawm lub qhov phab ntsa, qhov filling qhov siab (hauv qab tooj liab thickness), txoj kab uas hla tus nqi, thiab lwm yam.

Stack-up design xav tau
1. Txhua txheej routing yuav tsum muaj ib tug nyob ib sab siv txheej (lub hwj chim mov los yog stratum);
2. Cov txheej txheem tseem ceeb ntawm cov khoom siv hluav taws xob uas nyob ib sab thiab stratum yuav tsum tau khaws cia ntawm qhov tsawg kawg nkaus kom muab cov khoom sib txuas loj.

Ib qho piv txwv ntawm 4Layer yog raws li hauv qab no
SIG-GND(PWR)-PWR (GND)-SIG; 2. GND-SIG(PWR)-SIG(PWR)-GND
Cov txheej txheej yuav dhau los ua qhov loj heev, uas tsis yog tsuas yog phem rau kev tswj impedance, interlayer coupling thiab shielding; Tshwj xeeb, qhov sib txawv loj ntawm cov khoom siv hluav taws xob yuav txo tau lub peev xwm ntawm lub rooj tsavxwm, uas tsis tsim nyog rau kev lim suab nrov.