Heavy Copper Pcb | Thick Copper | PCB Copper PCB Surface Finish

M'dziko la matabwa osindikizira (PCBs), kusankha komaliza kwapamwamba ndikofunikira pakugwira ntchito kwanthawi zonse komanso moyo wautali wa zida zamagetsi. The pamwamba mankhwala amapereka ❖ kuyanika zoteteza kuteteza makutidwe ndi okosijeni, kusintha solderability, ndi kumapangitsanso kudalirika magetsi a PCB. Mtundu umodzi wotchuka wa PCB ndi PCB yamkuwa wandiweyani, womwe umadziwika chifukwa chotha kunyamula katundu wambiri komanso kupereka kasamalidwe kabwino ka matenthedwe. Komabe,funso lomwe nthawi zambiri limabuka ndilakuti: Kodi ma PCB amkuwa wandiweyani angapangidwe ndi zomaliza zosiyanasiyana? M'nkhaniyi, tiwona mitundu ingapo yomaliza yomwe ilipo pa PCB yamkuwa wandiweyani komanso malingaliro omwe amakhudzidwa posankha kumaliza koyenera.

1.Phunzirani za Heavy Copper PCBs

Musanafufuze zosankha zomaliza, ndikofunikira kumvetsetsa kuti PCB yamkuwa wandiweyani ndi chiyani komanso mawonekedwe ake enieni. Nthawi zambiri, ma PCB okhala ndi makulidwe amkuwa kuposa ma ounces atatu (105 µm) amatengedwa ngati ma PCB amkuwa wandiweyani. Mapulaniwa amapangidwa kuti azinyamula mafunde okwera kwambiri ndikutaya kutentha bwino, zomwe zimawapangitsa kukhala oyenera magetsi amagetsi, magalimoto, ntchito zamlengalenga ndi zipangizo zina zomwe zimakhala ndi mphamvu zamagetsi. Ma PCB amkuwa okhuthala amapereka matenthedwe abwino kwambiri, mphamvu zamakina apamwamba komanso kutsika kwamagetsi otsika kuposa ma PCB wamba.

2.Kufunika kwa chithandizo chapamwamba pakupanga Pcb Heavy Copper:

Kukonzekera pamwamba kumagwira ntchito yofunikira poteteza zingwe zamkuwa ndi zoyala kuti zisakanizidwe ndi okosijeni ndikuwonetsetsa kuti ma solder odalirika amalumikizana. Iwo amachita ngati chotchinga pakati poyera mkuwa ndi zigawo zakunja, kuteteza dzimbiri ndi kusunga solderability. Kuonjezera apo, kutsirizitsa pamwamba kumathandizira kupereka malo athyathyathya kuti akhazikitse chigawocho ndi njira zomangira waya. Kusankha kumaliza koyenera kwa ma PCB amkuwa okhuthala ndikofunikira kuti muwongolere magwiridwe antchito awo komanso kudalirika.

3.Njira zochizira pamwamba pa Heavy Copper PCB:

Kutentha kwa solder (HASL):
HASL ndi imodzi mwa njira zachikhalidwe komanso zotsika mtengo za PCB zapamtunda. Pochita izi, PCB imamizidwa mumtsuko wa solder wosungunuka ndipo solder yowonjezera imachotsedwa pogwiritsa ntchito mpeni wotentha. The solder otsala amapanga wandiweyani wosanjikiza pamwamba mkuwa, kuteteza ku dzimbiri. Ngakhale HASL ndi njira yochizira pamwamba yomwe imagwiritsidwa ntchito kwambiri, si njira yabwino kwambiri yama PCB amkuwa wandiweyani chifukwa cha zinthu zosiyanasiyana. Kutentha kwakukulu komwe kumakhudzidwa ndi njirayi kungayambitse kupsinjika kwa kutentha pamagulu a mkuwa wandiweyani, kuchititsa warping kapena delamination.
Electroless nickel kumizidwa golide plating (ENIG):
ENIG ndi chisankho chodziwika bwino chamankhwala apamtunda ndipo chimadziwika chifukwa cha kuwotcherera kwake komanso kukana dzimbiri. Kumaphatikizapo kuyika kagawo kakang'ono ka faifi tambala wopanda ma elekitirodi ndikuyika wosanjikiza wa golide womizidwa pamwamba pa mkuwa. ENIG ili ndi malo athyathyathya, osalala pamwamba, ndikupangitsa kuti ikhale yoyenera pazigawo zowoneka bwino komanso kulumikizana ndi waya wagolide. Ngakhale ENIG itha kugwiritsidwa ntchito pa PCBs zamkuwa wandiweyani, ndikofunikira kulingalira makulidwe a golide wosanjikiza kuti muwonetsetse chitetezo chokwanira ku mafunde apamwamba ndi zotsatira za kutentha.
Nickel Yopanda Electroless Plating Electroless Palladium Immersion Gold (ENEPIG):
ENEPIG ndi chithandizo chapamwamba chapamwamba chomwe chimapereka kusungunuka kwabwino, kukana dzimbiri komanso kulumikizidwa kwa waya. Kumaphatikizapo kuyika wosanjikiza wa faifi tambala wopanda electro, kenako wosanjikiza wa electroless palladium, ndipo potsiriza wosanjikiza wa golide womiza. ENEPIG imapereka kukhazikika kwabwino kwambiri ndipo itha kugwiritsidwa ntchito ku ma PCB amkuwa wandiweyani. Amapereka mapeto olimba a pamwamba, kuwapangitsa kukhala oyenera kugwiritsa ntchito mphamvu zamphamvu komanso zigawo zomveka bwino.
Kumiza malata (ISn):
Kumiza malata ndi njira ina yochizira pamwamba pa ma PCB amkuwa wandiweyani. Imamiza PCB mu njira ya malata, kupanga wosanjikiza woonda wa malata pamwamba pa mkuwa. Kumizidwa malata kumapereka kusungunuka kwabwino kwambiri, malo athyathyathya, ndipo ndi okonda chilengedwe. Komabe, kulingalira kumodzi mukamagwiritsa ntchito malata omiza pa PCBs zamkuwa wandiweyani ndikuti makulidwe a malata ayenera kuyang'aniridwa mosamala kuti atsimikizire chitetezo chokwanira ku okosijeni ndi kutuluka kwamakono.
Organic solderability preservative (OSP):
OSP ndi chithandizo chapamwamba chomwe chimapanga zokutira zodzitchinjiriza pamalo amkuwa owonekera. Ili ndi solderability yabwino komanso yotsika mtengo. OSP ndiyoyenera kugwiritsa ntchito mphamvu zotsika mpaka zapakatikati ndipo itha kugwiritsidwa ntchito pa PCB zamkuwa zokhuthala bola ngati mphamvu yonyamulira komanso zofunikira zakuwonongeka kwamafuta zikwaniritsidwa. Chimodzi mwazinthu zomwe muyenera kuziganizira mukamagwiritsa ntchito OSP pa PCB zamkuwa wandiweyani ndi makulidwe owonjezera a zokutira organic, zomwe zingakhudze magwiridwe antchito onse amagetsi ndi matenthedwe.

4.Zinthu zomwe muyenera kuziganizira posankha kumaliza pamwamba kwa Heavy Copper PCBs: Posankha kumaliza kwapamwamba kwa Heavy

Copper PCB, pali zinthu zingapo zofunika kuziganizira:

Kuthekera Kwamakono:
Ma PCB amkuwa okhuthala amagwiritsidwa ntchito makamaka pamapulogalamu amphamvu kwambiri, motero ndikofunikira kusankha kumaliza komwe kumatha kunyamula katundu wambiri popanda kukana kapena kutenthedwa. Zosankha monga ENIG, ENEPIG, ndi malata omiza nthawi zambiri ndizoyenera kugwiritsa ntchito masiku ano.
Kasamalidwe ka Kutentha:
Thick copper PCB imadziwika chifukwa cha mphamvu zake zopangira matenthedwe komanso kuthekera kochotsa kutentha. Kutsirizira kwapamwamba sikuyenera kulepheretsa kutentha kwa kutentha kapena kuyambitsa kutentha kwakukulu pazitsulo zamkuwa. Mankhwala apamtunda monga ENIG ndi ENEPIG ali ndi zigawo zoonda zomwe nthawi zambiri zimapindulitsa kuwongolera kutentha.
Solderability:
Kumaliza kwapamwamba kuyenera kupereka kugulitsa bwino kwambiri kuti zitsimikizire zolumikizana zodalirika za solder ndi ntchito yoyenera ya gawolo. Zosankha monga ENIG, ENEPIG ndi HASL zimapereka kudalirika kwa malonda.
Kugwirizana kwagawo:
Ganizirani kugwirizana kwa mapeto osankhidwa pamwamba ndi zigawo zenizeni zomwe ziyenera kuikidwa pa PCB. Zida zopangira bwino komanso kulumikiza waya wagolide kungafunike chithandizo chapamwamba monga ENIG kapena ENEPIG.
Mtengo:
Mtengo nthawi zonse umakhala wofunikira pakupangira PCB. Mtengo wa chithandizo chamankhwala osiyanasiyana amasiyanasiyana chifukwa cha zinthu monga mtengo wazinthu, zovuta zamachitidwe ndi zida zofunika. Ganizirani za mtengo wa zomaliza zosankhidwa popanda kusokoneza magwiridwe antchito ndi kudalirika.

Ma PCB amkuwa okhuthala amapereka maubwino apadera pakugwiritsa ntchito mphamvu zapamwamba, ndipo kusankha kumaliza koyenera ndikofunikira kuti muwongolere magwiridwe antchito ndi kudalirika kwawo.Ngakhale zosankha zachikhalidwe monga HASL sizingakhale zoyenera chifukwa cha kutentha, chithandizo chapamwamba monga ENIG, ENEPIG, malata omiza ndi OSP akhoza kuganiziridwa malinga ndi zofunikira zenizeni. Zinthu monga kunyamula kwaposachedwa, kasamalidwe kamafuta, kugulitsa, kugwirizana kwa zigawo ndi mtengo wake ziyenera kuwunikiridwa mosamala posankha kumaliza kwa ma PCB amkuwa wandiweyani. Popanga zisankho zanzeru, opanga amatha kutsimikizira kupanga bwino komanso magwiridwe antchito anthawi yayitali a PCB zamkuwa zakuda mumitundu yosiyanasiyana yamagetsi ndi zamagetsi.