PCB mofuta oa ts’ireletso

Ka mantsoe a bonolo, ho boloka PCB ho ka hlalosoa ka tsela e latelang:

Foreimi ea wiring ea PCB e entsoe ke moqapi bakeng sa likarolo tsa kantle libakeng tse sa hlophisoang boto ea potoloho, moo meetso ea koporo kapa likarolo tse ling tsa boto ea potoloho li tla kena kapa li tšele. Sebaka seo se ka ba le koporo ebile se ka ba le sebopeho sefe kapa sefe.

In most cases, retention zones are used to keep certain board areas far enough away from other components to prevent or minimize EMI. Leha ho le joalo, li boetse li sebelisetsoa ho fana ka sebaka bakeng sa tatellano ea fan-out ea likarolo tse holimo. Mehlala ke li-processor kapa li-FPGas, tseo hangata e leng liboto tsa tlhahlobo ea PCB le nts’etsopele. Mefuta e meng e tloaelehileng ea peheletso e thathamisitsoe ka tlase.

Mofuta oa tšireletso ea PCB

L antenna

Probably, the most common type of reservation is to reserve an area of copper wire around an onboard or connected antenna to prevent EMI from affecting the fidelity of the transmitted or received signal. Lipeeletso li kanna tsa ba le likhoele tsa antenna ho li-circuits tse ling.

L likarolo

It is also common to make room for fan-outs around components (especially EM radiators). This is true for microprocessors, FPgas, AFE and other medium to high pin count components (commonly used for patch packages).

L Sebaka sa tumello ea poleiti

Tlhaloso ea bohale e bohlokoa haholo tlhahiso. Ka ho khetheha, likarolo li arotsoe ka mapolanka ka bomong nakong ea kopano ea PCB. To do this, enough clearance must be left for wiring or scoring.

L ho latela

Sometimes it may be advantageous to define reservation areas around traces. Ka linako tse ling e sebelisoa bakeng sa likhoele tsa phetisetso e tsamaeang ka thelelo ea coplanar ho fihlela impedance e laoloang.

L ho cheka

Many plates are installed by screws or bolts. In these cases, it is helpful to define the spacing around the holes. Insufficient spacing can affect assembly, interrupt circuit operation, and even cause circuit board damage. Bakeng sa masoba, hangata o latela feela melao ea CM ea DFM.

L sehokedi

Depending on the connector type in terms of layout and placement, your board design may need to consider two considerations: the footprint of the connector board and the paneling. Ka tloaelo, peakanyo ea sehokedi kapa polaka ha e kenyeletse sebaka bakeng sa likhoele tsa kantle kapa likhokelo tsa thapo. Maemong ana, ho boloka mmuso ho bohlokoa ho netefatsa hore potoloho e sebetsa ka mokhoa o lebelletsoeng.

L switjha

Tšebeliso e ‘ngoe e ntle ea polokelo ke ho fana ka sebaka sa ho phetla kapa ho tsamaisa li-switch tse nyolohileng.

Lethathamo le kaholimo le fana ka mefuta e tloaelehileng le ts’ebeliso ea poloko ea PCB. Maemong a mang, leha ho le joalo, o kanna oa hloka ho hlalosa libaka tse boloketsoeng. Mohlala, haeba moralo oa hau o sebelisa likarolo; Mohlala, ho li-amplifiers tse sebetsang, moo ho nang le phapang e kholo ea impedance lipakeng tsa kenyelletso le khumo, potoloho e kanna ea angoa ke ho lutla ha maikutlo hona joale, ka hona ho kanna ha hlokahala ho fana ka mofuta o latelang oa ts’ireletso. Le ha e sa khetholloa e le sebaka se sirelelitsoeng, reng ea ts’ireletso e sebetsa e le tšitiso ea ‘mele linthong tse kantle le mohala, mme e thibela matla a kahare ho tsoa sebakeng seo. Joale re se re itokiselitse ho sheba hore na re ka netefatsa joang hore lipehelo li etsa mosebetsi oa tsona.

Lula hole le mathata

Mehato ea ho boloka PCB e sebetsa ha feela e ka fihlela sepheo sa eona. Sena ke ho fana ka karohano libakeng tse ikhethileng tsa boto ho tsoa linthong life kapa life tse kantle. Ho fihlela sena, o hloka ho latela tataiso e ntle ea Keepout.

Tekanyetso ea ho boloka PCB

L Lekola hore na hobaneng ho bolokoa ho hlokahala

L Lekola hore na ho hlokahala sebaka se kae ho latela ts’ebeliso

L Sebelisa matšoao a khatiso ea skrine ho khetholla libaka tsa polokelo

L Etsa bonnete ba hore tokomane ea hau ea moralo e na le tlhaiso-leseling ea poloko

Ho ts’oara PCB ke letlotlo la bohlokoa ho moralo oa boto ea hau, ho netefatsa hore e sebetsa joalo ka ha ho lebelletsoe. Ka ho latela litataiso tsena le ho li sebelisa ka botlalo, u ka qoba likhohlano tsa moralo le ho ntlafatsa ts’epahalo ea PCBA kamora ho tsamaisoa.