TP 31 TP

Te hoê FR4 PCB, o te hoê ïa tomite haaati neneihia e te FR4. FR4 te tumu parau faufaa roa ' ' e i te tairururaa PCB. Te faaohipa nei te feia aravihi i te pae no te uira e te feia aravihi i te pae no te mau matini roro uira i te mau iri PCB e te mau tao'a FR4.
I roto i te tairururaa NO PCB, e mea rahi te mau aniraa no te FR4. Mea paari e mea ohie ia hamani i te hoho'a o te tabula haaati FR4.
Mea au roa na te taata te mau tabula haaati FR4 no te mea e mea mâmâ e e nehenehe e faaohipahia i roto e rave rahi mau matini uira.

Eaha te hoê parau no te MAU RAVEA4?

FR4, e piti ïa mea:

  • Materia:

Ei materia no te hamaniraa, to'na auraa ra, o te mau api parau ïa tei papa'i-hape-hia. e faaohipahia te reira i roto i te FR4 PCB.

  • Te mau nota:

E faanahoraa atoa te reira. Ua faitohia te epoxy i roto i te piha haapiiraa. Te faaite ra teie mǎhu i te huru tumu o te hoê api parau epoxy.

E tauturu te reira i te faataa i te huru maitai o te mau tauihaa e te mau hoho'a api parau huru rau.

I roto i teie,

FR, te auraa ra, e ama i te auahi.

4 te mau mea e faataa ê nei ia'na i te tahi atu mau materia, o te 4raa ïa o te

Eaha te tomite faatere o te FR4 PCB?

Ua piihia te hoê tomite haaati e te FR4 te tomite haaati FR4 neneihia. O te hoê ïa tabula haaati i neneihia o te faaohipa i te mau api parau FR4.
I te haamataraa, e faaohipahia te FR4 i roto i te paruru o te tabula haaati. I muri iho, e tuu tatou i te hoê tapo'i veo i na pae e piti o te api parau FR4.
Ei hopearaa no te reira, e riro mai te reira ei CCL (Te mau ahu veo i roto i te veo). No roto mai i te FR4, CCL mai te hoê tao'a paruru.
E faaohipahia te reira i roto i te mau tabula hamaniraa FDR PCB
E horo'a te FR4 i te hoê puai. Hau atu i te reira, e mea rarahi ratou i roto i te parau no te haapaeraa i te haumi e te pato'iraa i te auahi.
No reira, e mea au-roa-hia teie mau iri i roto i te matete.

Te mau tuhaa o te FR4 te tia ia hi'opoahia ia maiti ana'e tatou i te FR4 PCB

Ia maiti - ana'e - hia aore ra ia poroi - ana'e - hia te tabula o te mau FR4 i neneihia, e tia i te hoê taata aravihi i te pae no te uira aore ra te taata aravihi ia hi'o i te mau tuhaa i muri nei:

  • Me'ume'u:

E taui te meumeu o te hoê api parau FR4 ia au i ta outou opuaraa. Te mea maitai roa, e titau outou i te hoê FR4 e te hoê me'ume'u o te 1.3 e ti'a ia oe ia 3 te mau initi.

  • Te mau mana'o tauturu no te haapiiraa:

E mea faufaa rahi roa te tu'atiraa i rotopu i te tane e te vahine i roto i te mau faanahoraa. E tauturu te reira ia tapea noa i te tereraa o te tomite faatere. Na te reira atoa e faataa i te aravihi o te mau tuhaa i roto i te mau tabula ohipa e rave rahi.

  • Vahi & Te faaau - ohie - raa:

Te faaau - ohie - raa, you can choose an FR4 material for your PCB boards. Mostly, people prefer thinner sheets as they take less space and are more flexible.

  • Weight of the FR4:

Mai te tau mai â, the thickness of the board determines its weight. For lighter products, choose FR4 boards with lighter weight.

  • Arata'iraa i te hi'opo'araa mahana:

To determine the temperature management of the FR4, look at the value of the thermal coefficient of the dielectric constant. Tera râ,, FR4 is heat resistant and it is one of the main reasons for its popular use.

Types of FR4 Materials and Parameters

  • Materials of FR4:In FR4 PCB fabrication, FR4 doesn’t use any specific types of material. Tera râ,, to determine the material of manufacturing, the grade of material is more important than the type of material.

    NEMA LI 1-1998 specification defines the grading system for FR4 materials.

    Types of FR4 Printed Circuit Boards:

    The types of FR4 boards depends on the method of classification.

    According to the number of layers, they are divided into the following types:

    • Single-sided FR4 PCB
    • RDE afa-tu'a-papa'i-pitiB
    • Multi-layer PCB

    Tera râ,, another classification of FR4 circuit boards is according to the core material used in their fabrication. I te rahiraa o te taime, there are two types of boards as per these criteria:

    • Rigid FR4 boards

    In the rigid FR4 printed circuit boards, the core material is FR4 only. No reira, it is rigid for the whole board.

    • Rigid-flex FR4 boards

    These types of PCB boards have core materials that are rigid FR4 and flexible circuits.

    Parameters of FR4:

    In order to determine the parameters of FR4, you will need to understand some keys:

    • LW= lengthwise, warp yarn direction
    • CW= crosswise, fill yarn direction

    They refer to the probable upright alignments of the fiberglass.

    • LW is along the x-axis.
    • CW is along the y-axis.

    The values of the parameter vary depending on the FR4 PCB manufacturing process. For high-frequency designs, feel free to ask for our datasheets.

    The following is an example of what the parameters for FR4 printed circuit boards look like:

Ta'o tumu Standard Values (may vary)
Specific Gravity/ Density 1.850 g/cm3
Temperature Index 284 °F
Water Absorption value <0.10%
Arata'iraa i te hi'opo'araa mahana 0.29 W/(M·K) through-plane
0.81 W/(M·K) in plane
Bond strength >1,000 kg
Flexural strength– LW > 415 MPa
Flexural strength– CW > 345 MPa
Dielectric strength 20 MV/m
Relative permittivity 4.4
Dissipation factor 0.017
Dielectric constant permittivity 4.70 max.
Glass transition temperature >120 te mau teteri (Te mau nota)
Young's modulus 24 GPa 21 GPa
LW
CW
Te mau tau'araa no te faarahiraa i te hi'oraa mahana X (10−5 K−1)
x-axis 1.4
y-axis 1.2
z-axis 7.0

Poisson's ratio

0.13 0.12

LW

CW

Sound speed

3602 m/s 3369 m/s
LW
CW
LW acoustic impedance 6.64

Uses and Applications of FR4 PCB

FR4 is much cheaper than the laminated boards. Ito ay, no reira, used in many complex devices.

Ei hi'oraa:

  • Relays of electric systems
  • Electric switches
  • Washers
  • Standoffs
  • Busbars
  • Arc shields
  • Screw terminal strips
  • Te mau taata e ha'u nei i ni'

FR4 PCB Specification of MOKO Technology

I te mau rave'a apî moKO, te pûpû atu nei tatou i te mau rave'a huru rau. Te vai ra i roto i ta tatou mau tabula haaati i neneihia te mau faataaraa i muri nei:

  Iteraa rau o te peu maitai
Mau tumu parau 1-50
Materia TE MAU RAVEA 4
FR4 Thickness 1.34 e ti'a ia oe ia 3 i roto.
FR4 Thermal Conductivity 0.29 W/(M·K) through-plane
0.81 W/(M·K) in plane
Te mau tau'araa no te faarahiraa i te hi'oraa mahana X (10−5 K−1)
x-axis 1.4
y-axis 1.2
z-axis 7.0

No te aha e maiti ai i te mau ravea aravihi apî ei FR4 PCB Manufacturer?

Te tomite faatere o te FR4, o te hoê ïa tomite haaati faaohipa - rahi - hia. Mai ta outou i ite, e mea mama a'e te reira i te tahi atu mau PCBs e e mea tupohe auahi. No reira, te titau - rahi - hia ra teie mau api parau i roto i te tairururaa PCB.

I te mau rave'a apî moKO, e faaohipa tatou i te mau materia maitai roa no te hamani i te mau materia maitai roa. No reira, e nehenehe ta matou e haapapû i te vauvau atu i te mau tabula ohipa maitai roa a'e no outou.

Te hamani nei e te faaora nei tatou e rave rahi tauatini PCBs. A hi'o na i ta tatou tabula taatoa o te mau tauihaa e te mau tauturu i ǒ nei.

Te tǎpǔ ra te mau ravea aravihi apî e hopoi mai i te FR4 PCB maitai roa ' ' e i te fenua Taina.

A farerei ia matou no te mau mea e ere i te mea maitai roa, taviniraa rahi, Te mau numera mâmâ, e te vitiviti i te haereraa i rapae.

Haamatau i ni'a