Menene PCB Mai Sauri?
Muna kiran PCB tare da mitar watsa sigina sama da 1GHz allon da'ira bugu mai sauri.
Menene fa'idodin amfani da PCB masu sauri?
Don inganta mitar sigina da warware matsalar EMI na samfuran lantarki, an kera PCBs masu sauri. Bayan ƙirar PCB mai sauri ya sami babban nasara, gudummawar sa ga EMI yana ƙara mahimmanci. Kusan kashi 60% na matsalolin EMI ana iya magance su ta PCBs masu sauri.
Wadanne kayan aiki ake amfani da su a cikin PCBs masu sauri?
Kayayyakin da ke da juriya mai zafi, ƙarfin injina, da kyau (abin dogaro)
Kayan aiki tare da tsayayyen sigogi Dk/Df (ƙananan ƙididdiga na bambancin tare da mita da muhalli)
Kayayyakin da ke da kyakkyawar kulawar impedance
Materials tare da ƙananan roughness na jan karfe rufi surface
Ana ba da shawarar zaɓar zanen fiber gilashi tare da ƙananan buɗe ido.
Wadanne shawarwari zan yi la'akari yayin zayyana PCB mai sauri?
Nasihu da yawa akan zana PCB mai sauri an bayyana su a ƙasa.
1) Yi amfani da software na ƙira tare da zaɓuɓɓukan ci gaba
Injiniyoyin suna buƙatar sanin software na ƙira wanda zai iya ba da zaɓuɓɓukan ci gaba. Kayan aikin software suna buƙatar ƙwararrun abubuwa masu yawa don samun damar tsara PCB masu sauri a cikin software na CAD. Kuna buƙatar samun kyakkyawar fahimtar kayan aikin CAD masu ƙarfi.
2) Mai saurin gudu
Lokacin da yazo da saurin gudu mai sauri, masu zanen kaya suna buƙatar fahimtar ka'idodin tsarin aiki na asali, ciki har da ba yanke shinge na ƙasa ba da kuma ajiye hanya ta takaice. Don haka, da fatan za a hana yin magana ta wata nisa akan layukan dijital kuma ka kiyaye duk abubuwan da zasu haifar da tsangwama ga amincin siginar.
3) Gudanarwa tare da sarrafa impedance
Don wasu sigina na kusan 40-120 ohms, suna buƙatar daidaitawa na impedance. An bayyana madaidaicin madaidaicin madaidaicin ta eriya da nau'i-nau'i daban-daban.
Masu zanen kaya suna buƙatar fahimtar yadda za a ƙididdige nisa na kewayawa da mahimmancin tari na ƙimar impedance. Idan darajar impedance ba daidai ba ne, yana iya yin tasiri mai tsanani akan siginar, wanda zai haifar da lalata bayanai.
4) Alamomin da suka dace da tsayi
Akwai layuka da yawa a cikin babbar bas ɗin ƙwaƙwalwar ajiya mai sauri da bas ɗin sadarwa. Waɗannan layukan na iya aiki a mitoci masu yawa, don haka ya kamata a watsa siginar lokaci guda daga mai aikawa zuwa mai karɓa. Bugu da ƙari, yana buƙatar fasalin da ake kira matching tsayi. Saboda haka, mafi yawan ma'auni sun bayyana ƙimar haƙuri waɗanda ke buƙatar daidaitawa da tsayi.
5) Rage yankin da'irar dawowa ta yanzu
Masu zanen PCB masu sauri suna buƙatar bin ƙa'idodi na asali, kamar zayyana ƙasa mai ci gaba da rage yanayin da'irar dawowa ta yanzu ta haɓaka hanyar dawowa na yanzu na kwatance, da kuma sanya wayoyi da yawa ɗinki.
Wadanne ayyuka ne mafi kyau don kera PCBs masu sauri?
Ƙwarewar ƙira ta PCB mai sauri, wanda ke tabbatar da amincin sigina.
An zaɓi kayan PCB masu sauri da kyau don tabbatar da aikin watsa siginar.
Ana aiwatar da sarrafa samarwa. Babban wuraren sarrafawa a lokacin samarwa shine nisa na da'irori, tazarar Layer, vias plated da jan karfe, kauri na jan karfe na da'irori, kauri na abin rufe fuska, da sauransu.
Menene farashin mallaka idan ya zo ga PCBs masu sauri?
Abubuwan da ke biyowa zasu shafi farashin PCBs masu sauri.
Material (kauri mai kauri, kauri daga cikin substrate, kauri na jan karfe)
Kayan aikin masana'anta da aka yi amfani da su
Wahalar samarwa
Bukatun abokin ciniki
Hanyar tattarawa da aka zaɓa
Hanyar bayarwa da aka zaɓa
Yadda ake zana PCB mai sauri?
Tsarin PCB mai sauri shine tsari mai rikitarwa wanda ke buƙatar cikakken la'akari da sigina, impedance, layin watsawa, da sauran abubuwan fasaha da yawa. Abubuwan fasaha masu zuwa na iya ba da wasu tunani.
Yi amfani da yadudduka da yawa don kewayawa cikin hankali.
Gajeren gubar tsakanin fil na na'urorin kewayawa masu sauri, mafi kyau.
Aiwatar da ƙasa kewaye don mahimman layukan sigina ko raka'a na gida.
Layin sigina mai tsayi mai tsayi da aka sanya akan shimfidar saman yana da yuwuwar samar da hasken lantarki mai girma. Ya kamata a sanya layin sigina mai girma tsakanin ma'aunin wutar lantarki da ƙasan ƙasa. Radiyoyin da aka haifar za su yi ƙasa da ƙasa saboda shayar da igiyoyin lantarki ta hanyar layin wuta da ƙasan ƙasa.
Menene bambanci tsakanin PCB mai sauri da daidaitaccen PCB?
Don daidaitaccen PCB, mutane sun fi damuwa da gajeriyar kewayawa, rufewa, da sauran batutuwan wayar ƙarfe. Koyaya, tare da neman babban aiki na samfuran lantarki, ana buƙatar ƙara mitar watsa siginar kuma mutane sun fi damuwa da ƙirar amincin siginar PCB mai sauri.
Shin akwai wasu la'akari na musamman lokacin sarrafa PCBs masu sauri?
Abubuwan la'akari na musamman sun ta'allaka ne a cikin ƙirar PCB mai sauri da samarwa yayin sarrafa PCBs masu sauri.
Ya kamata a daidaita tsayin da'irar bambance-bambancen.
Hanyar tuƙi bai kamata ta ketare jiragen da ba su cika ba.
Kada a sanya maki gwaji akan kowane layukan sigina mai sauri na banbanta.
Kada a bi layin sigina mai sauri kusa ko ƙasa da lu'ulu'u, oscillators, sauya kayan wuta, ramukan hawa, na'urorin maganadisu, ko guntun siginar lokaci-lokaci.
Yi ƙoƙarin bin layin sigina mai sauri akan saman saman da ƙasa tare da cikakken layin ƙasa. Ba a ba da shawarar yin layin layin a cikin jirgin sama na ciki ba.
Rike nisa daga siginar mai sauri zuwa gefen layin ƙasa mai tunani fiye da 90mil.
Kula da kula da soket da haɗa wayoyi.
Dole ne a sarrafa nisa ɗin alamar kwafi, sarari, da tsarin shimfidawa daidai don saduwa da matsatsin ƙima.
Yawancin gwaje-gwajen impedance TDR ana buƙatar lokacin da aka gama PCB masu sauri.
Ya kamata a zaɓi nau'ikan kayan da suka dace don saduwa da ayyukan da ake so.
Ana buƙatar ƙare saman lebur don PCBs masu sauri, kuma koyaushe muna ba da shawarar ENIG don jiyya na saman ENEPIG.
Menene matsakaicin adadin canja wurin bayanai akan PCB mai sauri?
Matsakaicin matsakaicin ƙimar canja wurin bayanai da za a iya samu akan PCB mai sauri shine 10.0GPs (Gigabits a sakan daya) da nisa, amma wannan yana haɓaka ci gaba.
Shin akwai wasu kayan aiki na musamman ko matakai da ake buƙata lokacin zayyana PCB mai sauri?
Akwai kayan aikin ƙirar software na PCB da ake buƙata da kayan simintin EDA da ake amfani da su yayin zayyana PCB mai sauri kamar Cadence, Mentor, PADS, Altium, HyperLynx, HFSS, ADS, da sauransu.
Yana da kyau a lura cewa kayan aikin software ɗaya na iya dacewa da aikin PCB ɗaya, yayin da wani kayan aikin software zai iya zama mafi kyawun amfani da sauran nau'ikan ayyuka. Saboda haka, yana da matukar muhimmanci a nemo kayan aikin ƙirar PCB daidai.
Menene ainihin ƙayyadaddun bayanai da masu samar da kayan PCB mai sauri?
Babban kayan aiki na iya zama FR4, yumbu, PTFE ko PTFE kayan ƙarfafawa tare da 1 Ghz zuwa 100 Ghz. Akwai da yawa shahara high gudun PCB kayan kaya kamar: Rogers, ISOLA, Ventec, ITEQ, TUC, SHENGYI, Panasonic, Taconic, da dai sauransu.