Kalozera wa FR-4 wa Magawo Osindikizidwa

Katundu ndi mawonekedwe a FR-4 kapena FR4 zimapangitsa kuti ikhale yosunthika kwambiri pamtengo wotsika mtengo. Ichi ndichifukwa chake kugwiritsidwa ntchito kwake kuli ponseponse pakupanga makina osindikizira. Chifukwa chake, ndizabwinobwino kuti tiphatikizepo nkhani pa blog yathu.

M'nkhaniyi, mupeza zambiri za:

Katundu ndi maubwino a FR4
Mitundu yosiyanasiyana ya FR-4
Zomwe muyenera kuziganizira posankha makulidwe
Chifukwa chiyani kusankha FR4?
Mitundu ya FR4 yopezeka ku Proto-Electronics

FR4 katundu ndi zipangizo

FR4 ndi muyezo womwe umatanthauzidwa ndi NEMA (National Electrical Manufacturers Association) wa galasi-reinforced epoxy resin laminate.

FR imayimira "flame retardant" ndipo ikuwonetsa kuti zinthuzo zikugwirizana ndi UL94V-0 muyeso wazinthu zamapulasitiki zoyaka moto. Khodi ya 94V-0 imapezeka pa ma FR-4 PCB onse. Zimatsimikizira kusafalikira kwa moto ndi kuzimitsa kwake mofulumira pamene zinthu zayaka.

Kusintha kwa magalasi ake (TG) ndi dongosolo la 115 ° C mpaka 200 ° C kwa High TGs kapena HiTGs malingana ndi njira zopangira ndi ma resin omwe amagwiritsidwa ntchito. FR-4 PCB yokhazikika idzakhala ndi FR-4 yosanjikiza pakati pa zigawo ziwiri zoonda zamkuwa zamkuwa.

FR-4 imagwiritsa ntchito bromine, chinthu chotchedwa halogen chemical element chomwe chimalimbana ndi moto. Idalowa m'malo mwa G-10, gulu lina lomwe silinali lolimba, m'magwiritsidwe ake ambiri.

FR4 ili ndi mwayi wokhala ndi chiyerekezo chabwino chokana kulemera. Sichimamwa madzi, chimasunga mphamvu zamakina apamwamba ndipo chimakhala ndi mphamvu yotsekera bwino m'malo owuma kapena onyowa.

Zitsanzo za FR-4

FR4 yokhazikika: monga dzina lake likusonyezera, uwu ndi muyezo FR-4 ndi kutentha kukana dongosolo la 140 ° C mpaka 150 ° C.

Mtengo wapatali wa magawo FR4: mtundu uwu wa FR-4 uli ndi kusintha kwa magalasi apamwamba (TG) pafupifupi 180 ° C.

Mtengo wapatali wa magawo CTI FR4: Comparative Tracking Index yapamwamba kuposa 600 Volts.

FR4 popanda lamkuwa lamkuwa: yabwino kwa mbale zotchinjiriza ndi zothandizira board.

Pali tsatanetsatane wa mawonekedwe azinthu zosiyanasiyanazi pambuyo pake m'nkhaniyi.

Mfundo zofunika kuziganizira posankha makulidwe

Kugwirizana ndi zigawo: ngakhale FR-4 imagwiritsidwa ntchito kupanga mitundu yambiri yamagawo osindikizidwa, makulidwe ake amakhala ndi zotsatira pamitundu ya chigawo chogwiritsidwa ntchito. Mwachitsanzo, zigawo za THT ndizosiyana ndi zigawo zina ndipo zimafuna PCB yopyapyala.

Kupulumutsa malo: kupulumutsa malo ndikofunikira popanga PCB, makamaka zolumikizira za USB ndi zida za Bluetooth. Ma board a thinnest amagwiritsidwa ntchito pamasinthidwe omwe kupulumutsa malo ndikofunikira.

Kupanga ndi kusinthasintha: ambiri opanga amakonda matabwa wandiweyani kuposa owonda. Pogwiritsa ntchito FR-4, ngati gawo lapansi ndilochepa kwambiri, lingakhale pachiwopsezo chosweka ngati miyeso ya bolodi ichulukidwa. Kumbali inayi, matabwa okulirapo amatha kusinthika ndikupanga ma V-groove.

Malo omwe PCB idzagwiritsidwe ntchito iyenera kuganiziridwa. Kwa gawo loyang'anira zamagetsi pazachipatala, ma PCB oonda amatsimikizira kuchepa kwa nkhawa. Mabodi omwe ndi owonda kwambiri - motero amasinthasintha kwambiri - amakhala pachiwopsezo cha kutentha. Amatha kupindika ndikutenga mbali yosafunika panthawi ya masitepe a soldering.

Kuwongolera kwa Impedans: makulidwe a bolodi amatanthauza makulidwe a chilengedwe cha dielectric, pakadali pano FR-4, ndizomwe zimathandizira kuwongolera kwa impedance. Pamene impedance ndi chinthu chofunikira, makulidwe a bolodi ndizomwe ziyenera kuganiziridwa.

Kulumikizana: mtundu wa zolumikizira zomwe zimagwiritsidwa ntchito pagawo losindikizidwa zimatsimikiziranso makulidwe a FR-4.

Chifukwa chiyani kusankha FR4?

Mtengo wotsika mtengo wa FR4s umawapangitsa kukhala njira yokhazikika yopangira ma PCB ang'onoang'ono kapena ma prototyping apakompyuta.

Komabe, FR4 siyabwino pamabwalo osindikizidwa pafupipafupi. Mofananamo, ngati mukufuna kupanga ma PCB anu kukhala zinthu zomwe sizimalola kukhazikitsidwa kwa zigawo zomwe sizikugwirizana ndi ma PCB osinthika, muyenera kusankha zinthu zina: polyimide/polyamide.

Mitundu yosiyanasiyana ya FR-4 yomwe ikupezeka ku Proto-Electronics

FR4 yokhazikika

FR4 SHENGYI banja S1000H
makulidwe kuchokera 0.2 mpaka 3.2 mm.
FR4 VENTEC banja VT 481
makulidwe kuchokera 0.2 mpaka 3.2 mm.
FR4 SHENGYI banja S1000-2
makulidwe kuchokera 0.6 mpaka 3.2 mm.
FR4 VENTEC banja VT 47
makulidwe kuchokera 0.6 mpaka 3.2 mm.
FR4 SHENGYI banja S1600
Kukula kokhazikika 1.6 mm.
FR4 VENTEC banja VT 42C
Kukula kokhazikika 1.6 mm.
Nkhaniyi ndi galasi epoxy popanda mkuwa, lakonzedwa ntchito kutchinjiriza mbale, zidindo, bolodi zothandizira, etc. Iwo amapangidwa ntchito Gerber mtundu makina zojambula kapena owona DXF.
makulidwe kuchokera 0.3 mpaka 5 mm.