Yog tias txoj hlua tsis xav tau txheej txheej ntxiv, vim li cas siv nws? Puas yuav tsis txo cov khaubncaws sab nraud povtseg ua rau lub rooj tsavxwm nyias nyias? Yog tias muaj ib lub rooj tsavxwm tsawg dua, tus nqi yuav qis dua? Txawm li cas los xij, qee zaum, ntxiv ib txheej yuav txo tus nqi.

cov PCB pawg thawj coj saib muaj ob lub qauv sib txawv: cov qauv tseem ceeb thiab cov ntawv ci.

Nyob rau hauv lub hauv paus qauv, tag nrho cov txheej txheem conductive nyob rau hauv lub PCB board yog coated rau cov tub ntxhais cov khoom; Nyob rau hauv cov ntawv ci, tsuas yog cov txheej txheem sab hauv ntawm PCB pawg thawj coj saib yog coated ntawm cov khoom tseem ceeb, thiab txheej txheej txheej txheej txheej yog cov ntawv ci-coated dielectric board. Tag nrho cov txheej txheem conductive yog sib koom ua ke los ntawm dielectric siv txheej txheem lamination multilayer.

Cov khoom siv nuclear yog ob-sided ntawv ci-clad board nyob rau hauv lub hoobkas. Vim tias txhua tus tub ntxhais muaj ob sab, thaum siv tag nrho, tus naj npawb ntawm cov txheej txheem ntawm PCB pawg thawj coj saib yog tus lej. Vim li cas ho tsis siv cov ntawv ci ntawm ib sab thiab cov qauv tseem ceeb rau tus so?

Yuav ua li cas txo tus nqi tsim thiab khoov ntawm PCB board

Tus nqi kom zoo dua ntawm tus lej PCB

Vim tias tsis muaj txheej txheej ntawm dielectric thiab ntawv ci, tus nqi ntawm cov ntaub ntawv raw rau khib-ntu PCBs yog me ntsis qis dua li ntawm tus lej PCBs. Txawm li cas los xij, tus nqi ua haujlwm ntawm cov lej khib nyiab PCB yog qhov siab dua li ntawm cov lej PCB. Tus nqi ntawm cov txheej txheem sab hauv yog tib yam; tab sis cov ntawv ci / core qauv pom tseeb nce tus nqi ua ntawm txheej txheej.

Khib-numbered PCB boards yuav tsum tau ntxiv cov txheej txheem tsis-tus qauv laminated core txheej bonding txheej txheem raws li cov txheej txheem tseem ceeb. Piv nrog rau cov qauv nuclear, kev tsim khoom ntawm cov chaw tsim khoom uas ntxiv cov ntawv ci rau cov qauv nuclear yuav txo qis. Ua ntej lamination thiab kev sib txuas, cov tub ntxhais sab nrauv yuav tsum tau ua ntxiv, uas ua rau muaj kev pheej hmoo ntawm khawb thiab etch tsis raug ntawm txheej txheej.

Cov qauv sib npaug kom tsis txhob khoov

Qhov zoo tshaj plaws vim li cas tsis tsim PCB boards nrog khib-ntaus txheej yog qhov khib-ntaus txheej PCB boards yooj yim khoov. Thaum lub PCB lub rooj tsavxwm txias tom qab txheej txheem sib txuas sib txuas sib txuas, qhov sib txawv lamination nro ntawm cov qauv thiab cov ntawv ci-clad yuav ua rau lub rooj tsavxwm PCB khoov. Raws li cov thickness ntawm lub rooj tsav xwm Circuit Court nce, qhov kev pheej hmoo ntawm kev khoov ntawm cov khoom sib xyaw PCB nrog ob lub qauv sib txawv ua ntau dua. Tus yuam sij rau tshem tawm PCB board dabtsi yog khoov yog los txais yuav ib pawg sib npaug. Txawm hais tias PCB pawg thawj coj saib nrog qee qhov kev khoov raws li qhov yuav tsum tau ua, kev ua haujlwm tom qab yuav raug txo qis, ua rau muaj kev nce nqi. Vim tias cov cuab yeej tshwj xeeb thiab cov khoom siv tes ua haujlwm yuav tsum tau ua thaum lub sij hawm sib dhos, qhov tseeb ntawm cov khoom siv tau raug txo qis, uas yuav ua rau qhov zoo.

Siv tus lej sib npaug PCB

Thaum ib qho khib nyiab PCB board tshwm nyob rau hauv tus tsim, cov txheej txheem hauv qab no tuaj yeem siv los ua kom muaj kev sib npaug sib npaug, txo cov nqi tsim khoom ntawm PCB, thiab zam PCB board dabtsi yog khoov. Cov txheej txheem hauv qab no yog npaj raws li kev nyiam.

1. Ib txheej teeb liab thiab siv nws. Txoj kev no tuaj yeem siv tau yog tias lub hwj chim txheej ntawm tus tsim PCB yog txawm thiab cov teeb liab txheej yog khib. Cov txheej ntxiv tsis tau nce tus nqi, tab sis nws tuaj yeem txo lub sijhawm xa khoom thiab txhim kho qhov zoo ntawm PCB pawg thawj coj saib.

2. Ntxiv ib txheej fais fab ntxiv. Txoj kev no tuaj yeem siv tau yog tias lub hwj chim txheej ntawm tus tsim PCB yog khib thiab lub teeb liab txheej yog txawm. Ib txoj hauv kev yooj yim yog ntxiv ib txheej hauv nruab nrab ntawm pawg tsis hloov lwm qhov chaw. Ua ntej, ua raws li cov lej khib nyiab PCB board thaiv, tom qab ntawd luam cov txheej hauv av hauv nruab nrab, thiab kos cov txheej seem. Qhov no yog tib yam li cov yam ntxwv hluav taws xob ntawm ib txheej tuab ntawm cov ntawv ci.

3. Ntxiv ib txheej teeb liab dawb nyob ze ntawm qhov nruab nrab ntawm pawg PCB. Txoj kev no txo ​​qis qhov sib npaug ntawm qhov sib npaug thiab txhim kho qhov zoo ntawm PCB pawg thawj coj saib. Ua ntej, ua raws cov khib-ntaus khaubncaws sab nraud povtseg mus rau txoj kev, ces ntxiv ib tug dawb paug teeb liab txheej, thiab kos cov seem txheej. Siv nyob rau hauv microwave circuits thiab mixed media (dielectric constants) circuits.

Qhov zoo ntawm kev sib npaug laminated PCB: tus nqi qis, tsis yooj yim rau khoov, txo lub sijhawm xa khoom, thiab xyuas kom zoo.