Fa'afeiloa'i i la matou upega tafa'ilagi.

O a ituaiga faapitoa o laupapa PCB?

Fa'avasegaga mai lalo i luga e fa'apea:
94HB/94VO/22F/CEM-1/CEM-3/FR-4
O fa'amatalaga e fa'apea:
94HB: Pepa pepa masani, e le o se afi (mea pito sili ona maualalo, tu'i mate, e le mafai ona faʻaaogaina e fai ma laupapa eletise)
94V0: pepa malo e taofia le mu (tu'i mate)
22F: laupapa alava ipu tioata itu e tasi (tu'i mate)
CEM-1: laupapa fiberglass itu tasi itu (e tatau ona viliina e le komepiuta, ae le o le tu'i)
CEM-3: laupapa semi-fiberglass fa'a-lua-itu (sei vagana ai pepa pepa fa'a-lua-itu, o le mea pito sili ona pito i lalo mo fa'ailoga e lua itu. E mafai ona fa'aogaina e panele fa'alua fa'alua lenei mea, o le 5 ~ 10 yuan / sikuea. mita taugofie nai lo FR-4)
FR-4: Fa'alava tioata fa'a-lua itu
Tali sili
1.c O le faʻavasegaina o mea e faʻasaʻo ai le afi e mafai ona vaevaeina i ituaiga e fa: 94V-0 / V-1 / V-2 ma le 94-HB
2. Amata: 1080=0.0712mm, 2116=0.1143mm, 7628=0.1778mm
3. FR4 CEM-3 o le laupapa, fr4 o le laupapa fiber tioata, cem3 o le substrate tu'ufa'atasi
4. Halogen-free e faʻatatau i mea faʻavae e le o iai le halogen (fluorine, bromine, iodine ma isi elemene), aua o le bromine o le a maua ai le kasa oona pe a mu, lea e manaʻomia e le puipuiga o le siosiomaga.
Lima.Tg o le vevela suiga o tioata, o lona uiga, o le mea liusuavai.
O le laupapa matagaluega e tatau ona mumu, e le mafai ona mu i se vevela, e mafai ona faamalulu.O le tulaga vevela i le taimi nei ua taʻua o le vevela suiga tioata (Tg point), ma o lenei tau e fesoʻotaʻi ma le tulaga mautu o le laupapa PCB.

O le a le maualuga Tg PCB laupapa matagaluega ma le lelei o le faʻaaogaina o se Tg PCB maualuga
A maualuga le vevela o laupapa lolomi Tg maualuga i se vaega patino, o le a suia le substrate mai le "tulaga tioata" i le "tulaga paʻu", ma o le vevela i le taimi nei e taʻua o le vevela suiga tioata (Tg) o le laupapa.O lona uiga, o le Tg o le maualuga lea o le vevela (° C.) lea e tumau ai le maaa o le mea'ai.O lona uiga, o mea masani PCB substrate e le gata ina faamaluluina, deform, liusuavai, ma isi i le maualuga o le vevela, ae faʻaalia ai foi se paʻu malosi i mea faʻainisinia ma eletise (Ou te manatu e te le manaʻo e vaʻai i lenei tulaga i au lava oloa. e ala i le vaai i le faavasegaina o laupapa PCB.).Fa'amolemole aua le kopiina mea o lo'o i totonu o lenei saite
E masani lava, o le Tg o le ipu e sili atu i le 130 tikeri, o le maualuga Tg e masani ona sili atu nai lo le 170 tikeri, ma le maualuga Tg e sili atu nai lo le 150 tikeri.
E masani lava, o laupapa lolomi PCB ma Tg ≥ 170 ° C ua taʻua o laupapa lolomi Tg maualuga.
O le Tg o le substrate ua faʻateleina, ma o le a faʻaleleia ma faʻaleleia le faʻafefe o le vevela, faʻafefe o le susu, vailaʻau faʻamaʻi, ma le mautu o le laupapa lolomi.O le maualuga o le tau o le TG, o le sili atu lea o le maualuga o le vevela o le laupapa, aemaise lava i le faiga e leai se taʻitaʻi, e tele atu Tg talosaga.
Tg maualuga o lona uiga maualuga le vevela.Faʻatasi ai ma le televave o le atinaʻeina o pisinisi faʻaeletoroni, aemaise lava oloa faʻaeletoroni o loʻo faʻatusalia e komepiuta, o loʻo atinaʻe agai i le maualuga o galuega ma le maualuga o le tele-faʻapipiʻi, lea e manaʻomia ai le maualuga o le vevela o mea e fai ai le PCB substrate o se faʻamaoniga taua.O le tulaʻi mai ma le atinaʻeina o tekonolosi faʻapipiʻi maualuga o loʻo faʻatusalia e le SMT ma le CMT ua faʻateleina ai le PCB ma sili atu ona le mafai ona tuʻueseeseina mai le lagolago o le maualuga o le vevela o le substrate e tusa ai ma le laʻititi laʻititi, laina lelei, ma le manifinifi.

O le mea lea, o le eseesega i le va o le FR-4 lautele ma le maualuga Tg FR-4 o le malosi faʻainisinia, faʻamautu tulaga, faʻapipiʻi, faʻafefe vai, ma le vevela o mea o loʻo i totonu o le vevela, aemaise lava pe a vevela pe a uma le susu.O loʻo i ai eseesega i tulaga eseese e pei o le faʻalauteleina o le vevela, ma o oloa maualuga Tg e sili atu le lelei nai lo mea masani PCB substrate.
I tausaga talu ai nei, o le aofaʻi o tagata faʻatau e manaʻomia ni laupapa lolomi Tg maualuga ua faʻateleina i lea tausaga ma lea tausaga.
PCB meafaitino malamalama ma tulaga faatonuina (2007/05/06 17:15)
I le taimi nei, o loʻo i ai le tele o ituaiga o laupapa faʻaofuofu apamemea faʻaaogaina lautele i loʻu atunuu, ma o latou uiga o loʻo faʻaalia i le laulau o loʻo i lalo: ituaiga o laupapa faʻaofuofu apamemea, malamalama o laupapa faʻapipiʻi apamemea.
E tele auala fa'avasegaina o laminates fa'aofuofu 'apamemea.E masani lava, e tusa ai ma mea eseese faʻamalosia o le laupapa, e mafai ona vaevaeina i: faavae pepa, faavae ie o tioata fiber pcb laupapa,
Fa'avae tu'ufa'atasi (fa'asologa CEM), fa'apalapala laupapa fa'apipi'i fa'apipi'i ma fa'avae mea fa'apitoa (ceramic, fa'avae u'amea, ma isi) vaega e lima.Afai e fa'aogaina e le laupapa _)(^$RFSW#$%T
Eseese resin adhesives ua fa'avasegaina, CCI fa'avae pepa masani.Ioe: phenolic resin (XPC, XxxPC, FR-1, FR

-2, ma isi), epoxy resin (FE-3), polyester resin ma isi ituaiga.O le fa'avae ie tioata tioata CCL o lo'o i ai le epoxy resin (FR-4, FR-5), lea o le taimi nei o le fa'aoga sili ona fa'aaogaina o fa'avae ie tioata.E le gata i lea, o loʻo i ai isi resini faʻapitoa (ie tioata, fiber polyamide, ie e le lalagaina, ma isi mea faʻaopoopo): bismaleimide modified triazine resin (BT), polyimide resin (PI), Diphenylene ether resin (PPO), maleic anhydride imine-styrene resin (MS), polycyanate resin, polyolefin resin, ma isi. E tusa ai ma le faatinoga o le mumu o le CCL, e mafai ona vaevaeina i ni ituaiga se lua o laupapa: afi mumu (UL94-VO, UL94-V1) ma le leai- fa'asa'o mumu (UL94-HB).I le tasi pe lua tausaga talu ai, faatasi ai ma le tele o le faamamafa i le puipuiga o le siosiomaga, o se ituaiga fou o le CCL e le o iai le bromine ua vavae ese mai le CCL e mafai ona taʻua o le "CCL flame-retardant green".Faatasi ai ma le televave o le atinaʻeina o tekinolosi oloa faʻaeletoroni, o loʻo i ai le maualuga o manaʻoga mo le cCL.O le mea lea, mai le faʻavasegaina o le faʻatinoga o le CCL, ua vaevaeina i le CCL faʻatinoga lautele, CCL faʻasolosolo dielectric maualalo, maualuga le vevela CCL (e masani lava o le L o le laupapa e i luga aʻe o le 150 ° C), ma le maualalo o le faʻalauteleina o le vevela CCL (e masani ona faʻaaogaina i luga). mea fa'apipi'i) ) ma isi ituaiga.Faatasi ai ma le atinaʻeina ma le faʻaauau pea o le alualu i luma o tekinolosi faʻaeletoroni, o loʻo faʻaauau pea ona tuʻuina atu manaʻoga fou mo mea faʻapipiʻi laupapa lolomi, ma faʻamalosia ai le faʻaauauina o le atinaʻeina o tulaga faʻapipiʻi laminate.I le taimi nei, o tulaga autu mo mea faʻapipiʻi e faʻapea.

①Tulaga fa'ale-atunu'u I le taimi nei, o lo'u atunu'u tulaga fa'ale-atunu'u mo le fa'avasegaina o mea fa'apipi'i pcb laupapa e aofia ai GB/T4721-47221992 ma GB4723-4725-1992.O le faʻataʻitaʻiga mo laminates apamemea i Taiwan, Saina o le CNS standard, lea e faʻavae i luga o le Japanese JIs standard., tatalaina i le 1983. gfgfgfggdgeeeeejhjj

② O tulaga autu o isi tulaga faaleatunuu o: JIS tulaga o Iapani, ASTM, NEMA, MIL, IPc, ANSI, UL tulaga o le Iunaite Setete, tulaga Bs o le Malo Tele, DIN ma VDE tulaga o Siamani, NFC ma UTE tulaga. o Falani, CSA o Kanata Tulaga, tulaga AS a Ausetalia, le tulaga muamua a le Soviet Union FOCT, tulaga faavaomalo IEC, ma isi.
E masani ona faʻaaogaina e tagata uma e tuʻuina atu mea muamua PCB: Shengyi\Jiantao\International, etc.
● Pepa talia: protel autocad powerpcb orcad gerber poʻo le laupapa kopi malosi, ma isi.
● Ituaiga ipu: CEM-1, CEM-3 FR4, mea maualuga TG;
● Tele laupapa maualuga: 600mm * 700mm (24000mil * 27500mil)
● Mafiafia laupapa gaosi: 0.4mm-4.0mm(15.75mil-157.5mil)
● Tulaga maualuga o le gaosiga: 16Layers
● mafiafia apa apa pepa apamemea: 0.5-4.0(oz)
● Fa'apalepale mafiafia ipu ua mae'a: +/-0.1mm(4mil)
● Fa'apalepale fua fa'atatau: Fa'ameamea komipiuta: 0.15mm (6mil) Fa'ailoga mate: 0.10mm (4mil)
● La'ititi laina lautele/vaava'a: 0.1mm (4mil) Laina fa'atonutonu le lautele: <+-20%
● Le pito maualalo vili le lautele o le oloa maeʻa: 0.25mm (10mil)
Maea la'ititi la'ititi pu e tu'i: 0.9mm (35mil)
Fa'amae'a fa'apalepale pu: PTH: +-0.075mm (3mil)
NPTH: +-0.05mm (2mil)
● mafiafia apamemea puipui pu: 18-25um (0.71-0.99mil)
● Laiti SMT maualuga: 0.15mm (6mil)
● Faʻapipiʻi luga: auro faʻafefeteina vailaʻau, HASL, laupapa atoa nickel-plated auro (vai / auro vaivai), siliki lau kelu lanumoana, ma isi.
● Solder mask mafiafia i luga o le laupapa: 10-30μm (0.4-1.2mil)
● Malosi pa'u: 1.5N/mm (59N/mil)
● Malosi ufimata solder: >5H
● Solder tetee plugging gafatia: 0.3-0.8mm (12mil-30mil)
● Dielectric tumau: ε= 2.1-10.0
● Insulation tetee: 10KΩ-20MΩ
● Fa'alavelave fa'apitoa: 60 ohm±10%
● Te'i vevela: 288℃, 10 sec
● Pepa o le laupapa ua mae'a: <0.7%
● Fa'aaogāga o oloa: mea tau feso'ota'iga, mea fa'aeletonika ta'avale, meafaigāluega, faiga fa'atulagaina o le lalolagi, komepiuta, MP4, sapalai eletise, meafale, ma isi.

PCBA


Taimi meli: Mati-30-2023