FR4 PB

Ko e FR4 PB ko ha poate ia ʻoku paaki mo FR4. Ko e FR4 ko e naunau mahuʻinga taha ia ʻi he fakatahaʻanga ʻa e PB. ʻOku fakaʻaongaʻi ʻe he kau ʻenisinia ʻuhila mo e popularly ʻa e ngaahi papa ʻa PB. fr4 naunau.
ʻI he fakatahaʻanga ʻa e PB, ʻOku lahi e fie maʻu FR4. FR4 ʻoku maʻopoʻopo mo faingofua ke fokotuʻutuʻu ʻa e fr4.
ʻOku manakoa ʻa e ngaahi papa FR4 kuo paki ʻi heʻenau totongi maʻamaʻa pea ʻe lava ke fakaʻaongaʻi ia ʻi ha ngaahi meʻangaue fakaʻuhila lahi.

Ko e ha ʻa FR4?

ʻOku FR4 taukaveʻi ha meʻa ʻe ua:

  • Ngaahi Nāunaú:

Ko ha naunau ngaohiʻanga koloa, ʻOku ʻuhinga ia fiberglass toe fakamalohia epoxy-ʻaho fakamilemila. ʻOku fakaʻaongaʻi ia ʻi FR4 PB. manufacturing.

  • Fakamaaka:

Ko ha ʻiuniti foki ia ʻo e kalasi. Naʻe fakamaaka ʻa e epoxy laminate. ʻOku fakahaaʻi ʻe he fakamaaka ko ʻeni ʻa e tuʻunga lelei ʻo ha laʻipepa epoxy.

ʻOku tokoni ʻa e faʻahinga kalasi ko ʻeni ki hono fakapapauʻi ʻa e tuʻunga lelei ʻo e ngaahi naunau mo e ngaahi faʻufaʻu kehekehe ʻo e laʻipepa.

ʻI he,

ʻOku ʻuhinga ʻa Falanise ki he ulo retardant.

4 ʻuhinga ki he ngaahi moʻoniʻi meʻa ʻoku ne fakafaikehekeheʻi ia mei he ngaahi naunau kehe ʻoku ʻuhinga ia ki he 4most

Ko e ha ʻa FR4 PB. board?

ʻOku ui ʻa e poate ʻo e fr4 kuo paaki mo FR4 ko e poate ʻa e FR4 kuo paki. Ko ha papa kuo paki ʻoku ne fakaʻaongaʻi ʻa e ngaahi laʻipepa FR4.
ʻI he kamataʻanga, ʻOku fakaʻaongaʻi ʻa e FR4 ʻi he palakipoe maluʻi ʻo e poate. Pea, ʻOku mau tanaki atu ha kopa ʻi he ongo tafaʻaki ʻo e laʻipepa FR4.
Ko hono ola leva ʻo e meʻa ni, ʻOku hoko ia ko e FFL (Vala ʻo e kopa Laminate). Koeʻuhi ko e FR4, ʻOku hoko ʻa e FFL ko ha naunau maluʻi.
ʻOku fakaʻaongaʻi leva ia ʻi he ngaohiʻanga koloa ʻa DR PB. papa
ʻOku ʻomi ʻe he FR4 ha malohi kia PB.. ʻIkai ngata ai, ʻoku nau lahi ʻi he hauhau ʻo e hauhau mo tekeʻi ʻa e afi.
Ko ia, ʻOku manakoa ʻaupito ʻa e ngaahi papa ko ʻeni ʻi he maketi.

Fotunga ʻo e FR4 ke fakakaukauʻi ʻi he taimi ʻoku fili ai FR4 PB

ʻI he taimi ʻoku fili pe ʻota ai FR4 palakipoe, kuo pau ke sio ha ʻenisinia fakaʻuhila pe tokotaha ngāue fakatekinikale ki he ngaahi meʻa ko ʻení:

  • Matolu:

ʻOku kehekehe pe ʻa e matolu ʻo ha laʻipepa FR4 ʻo makatuʻunga ʻi hoʻo ngaue. Ko hono moʻoni, te ke fie maʻu ha FR4 mo ha matolu ʻo 1.3 koe ke ke 3 ngaahi ʻinisi.

  • Impedance fakatauhoa:

ʻOku mahuʻinga ʻaupito ʻa e fakatauhoa impedance ʻi he tuʻo lahi PCBs. ʻOku tokoni ia ke tauhi e ngaue ʻa e poate ʻo e kau talekita. ʻOku ne toe fakapapauʻi foki ʻa e capacitance ʻo e ʻotu kuta ʻi he ngaahi papa layered fakavahaʻa-layered.

  • Feituʻu ʻOku & Ofeʻingofua:

Makatuʻunga ʻi hoʻo ngaue, te ke lava ʻo fili ha naunau FR4 ki hoʻo ngaahi papa ʻi hoʻo PB. Meimei ko e lahi taha, ʻOku saiʻia ange ʻa e kakai ʻi he ngaahi laʻipepa manifinifi ange ʻi he taimi ʻoku siʻisiʻi ange ai ʻenau ʻataa pea toe faingofua ange.

  • Mamafa ʻo e FR4:

Talu mei he, ʻOku fakapapauʻi ʻe he matolu ʻo e palakipoe ʻa hono mamafa. Ki ha koloa maʻamaʻa ange, fili ʻa e fr4 boards ʻoku maʻamaʻa ange hono mamafá.

  • Valaloto Conductivity:

Ke fakapapauʻi ʻa hono tokangaʻi ʻo e mafana ʻo e FR4, vakai ki he mahuʻinga ʻo e coefficient thermal ʻo e dielectric maʻu pe. Ka neongo ia, ʻOku FR4 e mafana ʻo e ʻea pea ko e taha ia ʻo e ngaahi tefitoʻi ʻuhinga ki hono fakaʻaongaʻi manakoa.

Faʻahinga naunau mo e fakangatangata FR4

  • Ngaahi naunau ʻo e FR4:ʻI FR4 PB ngaohi ʻaki, FR4 ʻikai ke ne fakaʻaongaʻi ha faʻahinga naunau pau. Ka neongo ia, ke fakapapauʻi ʻa e naunau ʻo e ngaohiʻanga koloa, ʻOku mahuʻinga ange ʻa e maaka ʻo e naunau ʻi he faʻahinga naunau.

    NEMA LI 1-1998 fakapapauʻi fakaʻuhingaʻi ʻa e polokalama fakamaaka ki he ngaahi naunau FR4.

    Faʻahinga ʻo e FR4 paaki ʻa e ngaahi papa kuo paki:

    ʻOku fakafalala ʻa e faʻahinga papa FR4 ʻi he founga fakafaʻahinga.

    Fakatatau ki he lahi ʻo e kuta, ʻoku vahevahe kinautolu ki he ngaahi faʻahinga ko ʻeni:

    • Fakatafaʻaki taha FR4 PB
    • ʻOku fakatafaʻaki ua ʻa e PB
    • Fakavahaʻa-taʻu B. p

    Ka neongo ia, Ko e fakafaʻahinga ʻe taha ʻo e ngaahi papa FR4 ʻoku fakatatau ia ki he tefitoʻi naunau ʻoku fakaʻaongaʻi ʻi heʻenau ngaohi ʻaki. Meimei pehe maʻu pe, ʻOku ʻi ai ha faʻahinga papa ʻe ua ʻo hange ko e ngaahi tukunga ko ʻeni:

    • Tuʻumaʻu FR4 papa

    ʻI he ngaahi papa tuʻumaʻu FR4 kuo paki, Ko e tefitoʻi naunau ko fr4 pe. Ko ia, ʻOku tuʻumaʻu ia ki he palakipoe kotoa.

    • Tuʻumaʻu-fakafefeka FR4 papa

    ʻOku maʻu ʻe he faʻahinga papa ko ʻeni ʻa e ngaahi tefitoʻi naunau ʻoku tuʻumaʻu FR4 mo feliliuaki circuits.

    Ngaahi fakangatangata ʻo e FR4:

    Ke fakapapauʻi ʻa e ngaahi fakangatangata ʻo e FR4, ʻe fie maʻu ke mahino kiate koe ha ngaahi kī:

    • LW = lengthwise, warp fakahinohino ki he kulasi
    • FW = crosswise, fakafonu e filo ʻo e kulasi

    ʻOku nau ʻuhinga ki he ngalingali fai fehokotaki angatonu alignments ʻo e fiberglass.

    • ʻOku ʻi he axis x ʻa LW.
    • ʻOku ʻi he axis ʻa e FW..

    ʻOku kehekehe pe ʻa e ngaahi tuʻunga ʻulungaanga mahuʻinga ʻo e Parameter ʻo makatuʻunga ʻi he founga hono ngaohi ʻo e FR4 PB. Ki he ngaahi faʻufaʻu tuʻo lahi, ongoʻi tauʻataina ke ke kole ʻetau datasheets.

    Ko ha sipinga ʻeni ʻo e fotunga ʻo e ngaahi fakangatangata ki FR4 ngaahi papa kuo paki:

Parameter Ngaahi Tuʻunga ʻUlungāanga Mahu (ʻe kehekehe pe)
Kalavite pau/Density 1.850 g/cm3
Fakahokohoko fakamotuʻalea ʻo 284 #F
Mahuʻinga Absorption vai <0.10%
Valaloto Conductivity 0.29 W/(M · K) ʻi he vakapuna
0.81 W/(M · K) ʻi he vakapuná
Haʻi ʻo e malohi >1,000 kilo ʻe
Flexural malohi – LW > 415 MPa
Flexural malohi – FW > 345 MPa
Dielectric malohi 20 MV/m
Kainga permittivity 4.4
Meʻa Dissipation 0.017
Dielectric maʻu pe permittivity 4.70 Meki.
Liliu e ʻea sioʻata >120 ngaahi mataʻitohí (Celsius)
Modulus ʻa e talavou 24 GPA 21 GPA
LW
FW
Lelei hono fakafuofuaʻi ʻo e valaloto X (10−5 K − 1)
x-axis 1.4
y-axis 1.2
z-axis 7.0

Fika fehangahangai ʻo e Poisson

0.13 0.12

LW

FW

Vave e ongo

3602 m/s 3369 m/s
LW
FW
LW impedance 6.64

Fakaʻaongaʻi mo hono fakaʻaongaʻi ʻo e FR4 PB

ʻOku fr4 lahi maʻamaʻa ange ʻi he ngaahi papa ʻaho fakamilemila. ʻOku, ko ia, fakaʻaongaʻi ʻi ha ngaahi meʻangaue faingataʻa lahi.

Hange ko ʻeni:

  • Relays ʻo e ngaahi system ʻuhilá
  • Header ʻuhila
  • Fufulu ha ngaahi
  • Standoffs
  • Busbars
  • Arc) sila
  • Sikalu ʻoku ʻikai faitoʻo
  • Transformers

FR4 PB fakapapauʻi ʻo e MOKO fakatekinolosia

ʻI he MOKO fakatekinolosia, ʻOku mau ʻoatu ha ngaahi ngaohiʻanga koloa kehekehe ʻa e PB. ʻOku maʻu ʻe heʻetau FR4 ʻa e ngaahi konga papa kuo paki ʻa e ngaahi fakahinohino pau ko ʻeni:

  Mahuʻinga
Kuta 1-50
Ngaahi Nāunaú FR4
FR4 matolu 1.34 koe ke ke 3 ʻi he.
FR4 valaloto Conductivity 0.29 W/(M · K) ʻi he vakapuna
0.81 W/(M · K) ʻi he vakapuná
Lelei hono fakafuofuaʻi ʻo e valaloto X (10−5 K − 1)
x-axis 1.4
y-axis 1.2
z-axis 7.0

Ko e ha ʻoku ke fili ai ʻa e MOKO fakatekinolosia ko hoʻo FR4 PB. tokotaha ngaohi kapeti?

Ko fr4 palakipoe ko ha papa ia ʻoku lahi hono fakaʻaongaʻi. Hange ko ia ʻoku mou ʻiloʻi, ʻOku maʻamaʻa ange ia ʻi he ngaahi ʻaho fakamilemila kehe PCBs pea ʻoku ne matuʻuaki e afi. Ko ia, ʻOku fuʻu fie maʻu lahi ʻa e ngaahi laʻipepa fiberglass epoxy ʻaho fakamilemila ko ʻeni ʻi he fakatahaʻanga ʻa PB.

ʻI he MOKO fakatekinolosia, ʻOku tau fakaʻaongaʻi e ngaahi naunau lelei mo e ngaohiʻanga koloa taukei. Ko ia, te tau lava ʻo fakapapauʻi ke ʻoatu ʻa e FR4 lelei taha kuo paaki maʻau.

ʻOku tau faʻu mo fakahaofi ha ngaahi PCBs ʻe lauiafe. Vakai ki heʻetau lisi fakaʻauliliki ʻo e ngaahi naunau mo e ngaahi ngaue heni.

MOKO ngaahi talaʻofa fakatekinolosia ke ʻomi ʻa e ʻulungaanga lelei taha FR4 PB ʻi Siaina.

Fetuʻutaki mai kiate kimautolu ki he tuʻunga maʻolunga, ngaue maʻongoʻonga, fakautuutu maʻamaʻa, pea tamateʻi ʻa e ʻaukai.

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