PCB mtundu wa chitetezo

Mwanjira yosavuta, kusungidwa kwa PCB kumatha kufotokozedwa motere:

Felemu yolumikizira ya PCB idapangidwa ndi wopanga zinthu zakunja m’malo omwe sanakhazikitsidwe pa board board, komwe zotsalira zamkuwa kapena zigawo zina zama board zimalowa kapena kuwoloka. Malowa atha kukhala kapena kukhala ndi mkuwa ndipo akhoza kukhala amtundu uliwonse.

Nthaŵi zambiri, malo osungira amagwiritsidwa ntchito kusunga madera ena kutali ndi zida zina kuti ateteze kapena kuchepetsa EMI. Komabe, amagwiritsidwanso ntchito popereka mpata wofufuzira kunja kwa zinthu zomwe zili pamwamba. Zitsanzo ndi ma processor kapena FPGas, omwe nthawi zambiri amakhala owunika a PCB ndi mabungwe otukuka. Mitundu ina yodziwika bwino yosungitsa anthu yalembedwa pansipa.

Mtundu wa chitetezo cha PCB

L mlongoti

Mwinanso, mtundu wofikira kwambiri ndikusungira malo amkuwa amkuwa mozungulira bolodi kapena tinyanga tolumikizidwa kuti EMI isakhudze kukhulupirika kwa chizindikiritso chololedwa kapena cholandilidwa. Kusungitsa malo kutha kukhala ndi kulumikizira kwa ma antenna kuma circuits ena.

L magawo

Zimakhalanso zachizoloŵezi kuti apange malo okonda kutulutsa zinthu (makamaka ma radiator a EM). Izi ndizowona kwa microprocessors, FPgas, AFE ndi zina zapakati mpaka mapiritsi apamwamba (omwe amagwiritsidwa ntchito phukusi la zigamba).

L Malo okhala m’mbali mwa mbale

Kuchotsa m’mphepete ndikofunikira kwambiri pakupanga. Makamaka, mapanelo amagawika m’magulu amtundu uliwonse pamsonkhano wa PCB. To do this, enough clearance must be left for wiring or scoring.

L kutsatira

Sometimes it may be advantageous to define reservation areas around traces. Nthawi zina amagwiritsidwa ntchito popanga ma chingwe opangira ma coplanar kuti akwaniritse ma impedance olamulidwa.

L kuboola

Mbale zambiri zimayikidwa ndi zomangira kapena akapichi. 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. Pogwiritsa ntchito mabowo, mumangotsatira malamulo a CM a DFM.

L cholumikizira

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. Nthawi zambiri, kapangidwe ka cholumikizira kapena pulagi sikuphatikiza malo olumikizira kunja kapena kulumikizana ndi chingwe. Pakadali pano, kusamalira boma ndikofunikira kuonetsetsa kuti dera likuchitadi monga zikuyembekezeredwa.

L kusintha

Ntchito ina yabwino yosungira ndi kupereka malo oti muzungulire kapena kusuntha kosintha koyenda.

Mndandanda womwe uli pamwambapa umapereka mitundu yofananira komanso kagwiritsidwe ntchito ka PCB. Nthawi zina, mungafunike kutanthauzira malo osungidwa. Mwachitsanzo, ngati mapangidwe anu amagwiritsa ntchito zigawo zikuluzikulu; Mwachitsanzo, pama amplifiers ogwira ntchito, pomwe pamakhala vuto lalikulu lamayendedwe pakati pakulowetsa ndi kutulutsa, dera limatha kutengeka ndi mayankho omwe akutuluka pakadali pano, chifukwa chake pangafunike kupereka njira zotsatirazi zotetezera: Mphete yachitetezo cha PCB. Ngakhale sanayikidwe ngati malo otetezedwa, mphete yotetezera imagwira ntchito ngati cholepheretsa kuthupi ndi zingwe, ndikulepheretsa mkatikatikati kutuluka m’derali. Tsopano tili okonzeka kuwona momwe tingawonetsere kuti zosungitsa zimagwira ntchito yawo.

Khalani kutali ndi mavuto

Njira zosungira ma PCB ndizothandiza ngati zingakwaniritse zolinga zawo. Izi ndikupereka kudzipatula m’malo ena a bolodi kuchokera kuzinthu zilizonse zakunja. Kuti mukwaniritse izi, muyenera kutsatira malangizo abwino a Keepout.

Kusunga kwa PCB

L Sankhani chifukwa chomwe kusungidwa kumafunikira

L Dziwani kuchuluka kwa malo ofunikira malinga ndi kagwiritsidwe ntchito

L Gwiritsani ntchito zolembera pazenera kuti muzindikire malo omwe mungasungire malo

L Onetsetsani kuti chikalata chanu chakapangidwe kamakhala ndi chidziwitso chosunga

Kusunga kwa PCB ndi chinthu chofunikira pakapangidwe ka board yanu, kuwonetsetsa kuti ikugwira ntchito monga mukuyembekezera. Mukamatsatira malangizowa ndikuwapindulira, mutha kupewa mikangano ndikuwongolera kudalirika kwa PCBA mukatumizidwa.