Ntawv luam tawm hauv Circuit Court board (PCBS) yog cov ntawv ua los ntawm fiberglass, sib xyaw epoxy resins lossis lwm yam ntaub ntawv laminated. PCBS tuaj yeem pom muaj ntau yam khoom siv hluav taws xob thiab khoom siv hluav taws xob (piv txwv li, lub suab nrov, xov tooj cua, radars, khoos phis tawj, thiab lwm yam). Ntau hom PCBS tuaj yeem siv tau nyob ntawm daim ntawv thov. What are the various types of PCBS? Nyeem rau xyuas seb.

What are the different types of PCBS?

PCBS are usually classified by frequency, number of layers used, and substrate. Qee hom nrov tau tham hauv qab no.

L ib sab PCB

Single-sided PCB is the basic type of circuit board, consisting of only one layer of substrate or base material. Cov txheej yog npog nrog cov hlau nyias, tooj liab, uas yog tus coj hluav taws xob zoo. Cov PCBS no tseem muaj cov tshuaj tiv thaiv kab mob tiv thaiv txheej uas tau thov rau saum txheej tooj liab ua ke nrog txheej txheej silkscreen. Qee qhov zoo uas ib leeg-sab PCBS muab yog:

Single-sided PCB is used for mass production and low cost.

Cov PCBS no tau siv hauv cov kab hluav taws xob yooj yim xws li lub zog ntsuas hluav taws xob, kev xa tawm, lub ntsuas pa thiab cov khoom siv hluav taws xob.

L ob-tog PCB

Ob sab ntawm ob sab PCB muaj hlau txheej txheej. Qhov nyob hauv lub rooj tsav xwm hauv tsev tso cai rau cov hlau txuas los ntawm ib sab mus rau lwm qhov. These PCBS are connected to the circuit on either side by either through-hole or surface-mount techniques. Cov txheej txheem dhau los ntawm qhov cuam tshuam nrog hla cov hlau lead sib dhos los ntawm qhov ua ntej qhov drilled qhov hauv pawg thawj coj saib thiab tom qab ntawd vuam nws mus rau lub ncoo ntawm sab nraud. Kev teeb tsa saum npoo cuam tshuam nrog tso cov khoom hluav taws xob ncaj qha rau ntawm daim phiaj hluav taws xob. Ob tog ob tog PCBS muab cov txiaj ntsig zoo hauv qab no:

Kev teeb tsa saum npoo tso cai rau ntau lub xov tooj sib txuas rau lub rooj tsav xwm ntau dua los ntawm qhov kev teeb tsa.

Cov PCBS no tau siv dav hauv kev siv xov tooj ntawm tes, saib xyuas lub zog, ntsuas cov cuab yeej, ua kom nrov nrov thiab ntau lwm yam ntawv thov.

L multilayer PCB

Multilayer PCB yog lub rooj tsav xwm luam tawm uas muaj ntau tshaj ob txheej tooj liab, xws li 4L, 6L, 8L, thiab lwm yam. Cov PCBS no nthuav tawm cov thev naus laus zis siv hauv ob sab PCBS. Cov txheej txheem ntawm txheej txheej thiab rwb thaiv tsev cais cov txheej hauv ntau txheej PCB. PCBS are compact in size and offer weight and space advantages. Qee qhov zoo uas ntau tus PCBS muab rau yog:

Ntau txheej PCBS muab qib siab ntawm kev tsim kom yooj yim.

Cov PCBS no ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm nrawm. Lawv muab ntau qhov chaw rau tus qauv tus coj thiab lub zog siv.

L nruj PCB

Hard PCBS yog cov uas tau ua los ntawm cov khoom ruaj khov thiab tsis tuaj yeem khoov. Qee qhov txiaj ntsig tseem ceeb lawv muab:

Cov PCBS no tau cog lus me me, ua kom ntseeg tau tias muaj ntau yam kev sib dhos yooj yim tsim nyob ib puag ncig lawv.

Hard PCBS yooj yim kho thiab tswj hwm vim tias txhua yam khoom siv tau pom meej. Ntxiv mus, teeb liab txoj hauv kev tau teeb tsa zoo.

L yooj ywm PCB

Saj zawg zog PCB tau tsim los ntawm cov ntaub ntawv hloov pauv yooj yim. These PCBS are available in single-sided, double-sided and multi-layer formats. Qhov no pab txo qhov nyuaj hauv cov khoom siv. Some of the advantages these PCBS offer are:

Cov PCBS no pab txuag chaw ntau thiab txo qhov hnyav tag nrho ntawm pawg thawj coj saib.

Flexible PCBS help reduce board size and are therefore ideal for a variety of applications requiring high signal routing density.

Cov PCBS no tau tsim los rau kev ua haujlwm uas ntsuas thiab ntsuas qhov kub thiab txias.

L Rigid -hloov pauv -PCB

Rigid flexible – A PCB is a combination of rigid and flexible circuit boards. They consist of multiple layers of flexible circuits connected to more than one rigid plate.

These PCBS are precisely constructed. Raws li qhov tshwm sim, nws tau siv ntau yam kev siv tshuaj kho mob thiab tub rog.

Cov PCBS no yog qhov hnyav, txuag tau txog 60% ntawm qhov hnyav thiab qhov chaw.

L high-zaus PCB

Hf PCBS are used in the frequency range of 500MHz to 2GHz. Cov PCBS no tuaj yeem siv tau hauv ntau yam kev thov siv dav, xws li kev sib txuas lus, microwave PCBS, microstrip PCBS, thiab lwm yam.

L Aluminium backplane PCB

Cov phaj no tau siv rau daim ntawv thov siv hluav taws xob siab vim tias cov qauv txhuas tau pab ua kom cov cua sov tawg. Aluminium-backed PCBS tau paub tias muaj qib siab ntawm kev nruj thiab qib qis ntawm kev nthuav dav cua sov, ua rau lawv zoo rau kev siv nrog kev ua haujlwm siab ua haujlwm siab. PCB tau siv rau LED thiab lub zog siv.

Xav tau rau PCBS tau txais thoob plaws kev lag luam. Niaj hnub no, koj yuav pom ntau yam paub zoo PCB cov tuam txhab tsim khoom lag luam thiab cov muag khoom uas tuaj yeem ua tau raws li qhov xav tau ntawm cov khoom lag luam sib txuas ua lag luam. Nws ib txwm pom zoo kom yuav PCBS rau kev lag luam thiab kev lag luam los ntawm cov tuam txhab muaj npe nrov thiab cov muag khoom.