Pcb board prototype theka mabowo ENIG pamwamba TG150
Katundu Wazinthu:
Zida Zoyambira: | FR4 TG150 |
Makulidwe a PCB: | 1.6+/-10%mm |
Chiwerengero cha Masanjidwe: | 4L |
Makulidwe a Copper: | 1/1/1/1 oz |
Chithandizo chapamtunda: | ENIG 2U” |
Mask a solder: | Wobiriwira wonyezimira |
Silkscreen: | Choyera |
Njira yapadera : | Pth theka mabowo m'mphepete |
Kugwiritsa ntchito
Mtengo wa TG umatengera kutentha kwa magalasi (Tg), yomwe ndi gawo lofunikira pakukhazikika kwamafuta ndi kukana kutentha kwa ma board a PCB. Ma board a PCB okhala ndi ma TG osiyanasiyana ali ndi mawonekedwe osiyanasiyana komanso mawonekedwe ogwiritsira ntchito. Nazi kusiyana kofala:
1. Kukwera kwa mtengo wa Tg, kumapangitsanso kutentha kwapamwamba kwa bolodi la PCB, komwe kuli koyenera kwa zochitika zogwiritsira ntchito m'madera otentha kwambiri, monga zamagetsi zamagalimoto, kayendetsedwe ka mafakitale ndi zina.
2. Kukwera kwa mtengo wa Tg, mphamvu zamakina a bolodi la PCB, ndi zizindikiro za mphamvu monga kupinda, kugwedezeka, ndi kumeta ubweya ndizoposa za bolodi la PCB lomwe lili ndi mtengo wotsika wa Tg. Ndizoyenera zida zolondola ndi zida zomwe zimafuna kukhazikika kwakukulu.
3. Mtengo wa matabwa a PCB omwe ali ndi mtengo wotsika wa Tg ndi wotsika kwambiri, womwe ndi woyenera pazochitika zina zogwiritsira ntchito zomwe zimakhala ndi zofunikira zochepa zogwirira ntchito komanso kuwongolera mtengo wokhwima, monga magetsi ogula. Mwachidule, kusankha bolodi ya PCB yoyenera pazochitika zanu zogwiritsira ntchito kudzakuthandizani kusintha khalidwe la mankhwala ndi kukhazikika ndikuchepetsa ndalama zopangira.
4. Gulu losindikizidwa la tg150 limatanthawuza bolodi lopangidwa ndi bolodi la tg150. TG nthawi zambiri imatanthawuza kutentha kwa galasi, komwe kumatanthauza kusintha kosasunthika kwa zinthu za amorphous kuchoka pa malo olimba ndi "galasi" kupita kumalo a raba ndi ma viscous pamene kutentha kwapamwamba kuposa momwe kumayembekezeredwa. Pomwe TG nthawi zambiri imakhala yotsika kuposa kutentha kosungunuka kwa zinthu zofananira za crystalline.
5. Galasi yosinthira kutentha kwa galasi nthawi zambiri imabwera ngati chinthu chosapsa, kupotoza / kusungunuka pazigawo zina za kutentha. Tg150 PCB imabwera ngati zinthu zapakati pa TG chifukwa imagwera pamwamba pa 130 digiri Celsius mpaka 140 digiri Celsius komabe pansi pa 170 digiri Celsius yofanana kapena kupitilira apo. Chonde dziwani kuti kumtunda kwa TG ya gawo lapansi (nthawi zambiri epoxy), kumapangitsa kuti bolodi yosindikizidwa ikhale yokhazikika.
FAQs
Kutentha kofunikira pa kukhazikika kwa PREPREG kuyenera kugwiritsidwa ntchito popanda kupitirira FR4 Tg kusunga kukhazikika kwa PCB. Muyezo wa FR4 Tg uli pakati pa 130 - 140 ° C, wapakati Tg ndi 150 ° C ndipo Tg wokwera ndi wamkulu kuposa 170 ° C.
Tg yokhazikika imakhala pamwamba pa 130 ℃ pomwe Tg yokwera pamwamba pa 170 ℃ ndi pakati Tg pamwamba pa 150 ℃. Zikafika pazinthu za PCB, Tg yapamwamba iyenera kusankhidwa, yomwe iyenera kukhala yokwera kuposa momwe kutentha kumagwirira ntchito.
Tg150 PCB imabwera ngati zinthu zapakati pa TG chifukwa imagwera pamwamba pa 130 digiri Celsius mpaka 140 digiri Celsius komabe pansi pa 170 digiri Celsius yofanana kapena kupitilira apo. Chonde dziwani kuti kukweza kwa TG ya gawo lapansi (nthawi zambiri epoxy), kumapangitsa kuti bolodi yosindikizidwa ikhale yokhazikika.
Chinthu chachikulu chomwe muyenera kuganizira ngati mugwiritse ntchito 150 kapena 170 Tg PCB ndi kutentha kwa ntchito. Ngati ndi zosakwana 130C/140C, ndiye Tg 150 zinthu zili bwino PCB wanu; koma ngati kutentha kwa ntchito kuli pafupi 150C, ndiye kuti muyenera kusankha 170 Tg.
Tg PCB yapamwamba imakhala ndi utomoni womwe umapangidwira kuti usasunthike popanda lead ndipo umathandizira kulimba kwamakina kumalo ovuta komanso otentha kwambiri. Utoto umatanthauza chinthu chilichonse cholimba kapena cha semisolid chomwe chimagwiritsidwa ntchito nthawi zambiri mu mapulasitiki, ma vanishi, ndi zina.