Basic Material na PCB

Ta yaya ake yin laminates na jan ƙarfe? Gabaɗaya, laminate mai ɗauke da jan ƙarfe an yi shi da kayan ƙarfafawa (ƙyallen fiber na gilashi, gilashin ji, takarda fiber ɗin da aka saka, da dai sauransu), an saka shi da m resin, busasshe, yanke da kuma saka shi cikin fanko, sannan an rufe shi da farantin ƙarfe, farantin ƙarfe azaman mold , kuma an kafa shi a babban zafin jiki da matsin lamba a cikin latsa mai zafi

Laminate mai laushi

Waɗanne nau’ikan laminate na jan ƙarfe za a iya raba su gwargwadon ƙarfi da sassaucin farantin da kayan ƙarfafawa daban -daban? Dangane da tsaurin kai da sassaucin farantin, ana iya raba shi cikin tsayayyen jan ƙarfe da laminate na jan ƙarfe. Dangane da kayan ƙarfafawa daban -daban, ana iya raba su zuwa rukuni huɗu: tushen takarda, tushen zane na gilashi, tushen hadaddun (jerin CEM, da sauransu) da tushen kayan musamman (yumɓu, tushen ƙarfe, da sauransu). 3. A taƙaice bayyana mahimmancin ma’aunin ƙasa GB / t4721-92.

Copper

Harafin farko na samfurin samfurin, C, yana nufin foil mai ɗauke da tagulla.

Haruffa na biyu da na uku suna nuna resin da aka yi amfani da shi don substrate;

Haruffa na huɗu da na biyar suna nuna kayan ƙarfafawa da aka yi amfani da su don kayan tushe; A ƙarshen harafin, an haɗa lambobi biyu ta wani ɗan gajeren layin kwance don wakiltar lambar samfurin iri ɗaya amma aikin daban.

4. Menene abin da ke taƙaice ke nufi? JIS, ASTM, NEMA, mil, IPC, ANSI, IEC, BS <br /> JIS Standard Masana’antar Jafananci <br /> ASTM American Society for test and standard standard <Br /> NEMA American Association Manufacturing Association <br /> mil American mizanin soja <br /> IPC Haɗin kewayawar Amurka da ƙa’idodin Ƙungiyar Ƙungiyoyi <br /> ANSI Ƙa’idodin Ƙungiyoyin Ƙasashen Ƙasa na Amurka UL Ƙungiyoyin Inshorar Inshorar Inshorar Ƙasar Amirka Ka’idodin ƙungiyoyin ƙa’idodi VDE Matsayin wutar lantarki na Jamusanci CSA Ka’idojin Ƙungiyoyin Ka’idodin Kanada kamar matsayin Matsayin Cibiyar Matsayin Australia

5. A taƙaice bayyana ƙa’idodin UL da ƙungiyoyin ba da inganci da aminci? UL shine farkon Laboratories Underwriters. UL ya ba da kusan takaddun daidaitattun aminci 6000. Ka’idodin da suka danganci laminates na jan ƙarfe suna cikin u1746.

6. Menene manyan rukunoni biyu na takardar jan ƙarfe bisa ga hanyoyin shiri daban -daban? Menene ake kira su a cikin ƙa’idodin IPC? Ana iya raba shi da tsare -tsare na jan ƙarfe da tsare -tsare na jan ƙarfe. Ana kiran su aji W da aji E bi da bi a cikin ƙa’idodin IPC

7. A taƙaice bayyana halaye na aiki da hanyoyin shiri na kalandaran jan ƙarfe da foil na jan ƙarfe. An sanya takardar jan ƙarfe mai kalanda ta hanyar mirgina farantin ƙarfe akai -akai. Kamar takardar jan ƙarfe na electrolytic, yana buƙatar jiyya mai ƙarfi bayan samar da gashin ulu. Juriya mai lanƙwasawa da ɗimbin ɗimbin fakitin jan ƙarfe da aka ƙera sun fi na foil na jan ƙarfe na lantarki, tsarkin jan ƙarfe ya fi na foil na jan ƙarfe na electrolytic, kuma mawuyacin yanayin ƙasa ya yi laushi fiye da na jan ƙarfe na lantarki.

8. A taƙaice bayyana kaddarorin fasaha daban -daban na foil na jan ƙarfe na electrolytic da tasirin sa akan kaddarorin laminate na jan ƙarfe? A. Kauri. > B. Bayyanar. C. Ƙarfin ƙarfi da tsawo. Ƙananan elongation da ƙarfi mai ƙarfi a babban zafin jiki zai haifar da canjin yanayin kwanciyar hankali da kwanciyar hankali na madaidaiciyar madaidaiciya, raguwar ingancin ramukan ƙarfe a cikin PCB da karayar murfin tagulla lokacin amfani da PCB. D. Karfin kwasfa. Ƙarfin kwasfa na LP, VLP da SLP jan ƙarfe na jan ƙarfe tare da ƙarancin Coarseness akan allon da aka buga da allo mai yawa tare da layuka masu kyau ya fi na foils na jan ƙarfe (STD da HTZ). E. Nada juriya. Bambanci mai tsawo da juzu’i na bango na jan ƙarfe na electrolytic ya ɗan fi girma a cikin alkiblar juzu’i fiye da ta a tsaye. F. Ƙarfin farfajiya. G. Siyarwa. > H. Babban juriya na iskar shaka. Baya ga manyan abubuwan fasaha guda takwas na takardar jan ƙarfe, akwai filastik na murfin jan ƙarfe, mannewa tawada UV, ingancin murfin jan ƙarfe, electroplating coefficient da launi na takardar jan ƙarfe.

9. A taƙaice bayyana aikin gilashin fiber zane? Abubuwan da ake aiwatarwa na asali sun haɗa da: nau’in warp da weft, yawaitar saƙa (adadin yadudduka da yadudduka), kauri, nauyi a kowane yanki, faɗin da ƙarfin karyewa (ƙarfin tensile).

10. Dangane da ma’aunin NEMA, gabaɗaya an raba laminates masu ɗauke da jan ƙarfe bisa ga ayyukansu. Mene ne na kowa? Nau’in gama gari sun haɗa da: XPC, xxxpc, FR-1 (xpc-fr), FR-2 (xxxpc-fr), fr-3, da sauransu.

11. Kwatanta laminate na jan ƙarfe da aka yi da takarda tare da zane-zanen gilashi bisa laminate na jan ƙarfe? Samfurin da aka yi da takarda woodan itace ko gilashin fiber gilashi azaman ƙarfafawa, an yi masa rufi da rufi, an rufe shi da takardar jan ƙarfe a gefe ɗaya ko biyu kuma an matse shi da zafi.