Ms. Shelby Luo

Maxaan kuu qaban karaa?

Ms. Shelby Luo

Maxaan kuu qaban karaa?

SHENZHEN XIONGYIHUA PLASTIC INSULATION LTD
EN
Guriga> Alaabta> Xaashiyaha xaashiyaha> Fr4 xaashida

Fr4 xaashida

FR4 ma aha magac shey ah, laakiin nooc ka mid ah fasal u adkaysi u adkaysiga dabka, oo matalaya qalabka resin ayaa iskiis u baabi'in kara marka rasaasta rasaasta. Hadda waxaa jira dhammaan noocyada alaabta fr4 ah oo adeegsanaya sida PCB, laakiin kuwa ugu weyn ayaa ka kooban resin resin, prefer iyo fiberlass.

 

FR4 sheet
 
Properties
 
Unit
Grade
FR-4,Grade A
Flexural strength perpendicular to laminations (A: under normal conditions E-1/150: 150±5 °C . Thickness:≥1.6mm)
Mpa
340
Compression strength perpendicular to laminations
Mpa
350
Impact Strength parallel to laminations (Charpy,Thickness:≥5mm)
kJ/m2
33
Insulation Resistance after immersion in water (D-24/23)
Ω
5.0×108
Dielectric strength perpendicular to laminations (in 90±2°C transformer oil, 1 mm in thickness)
MV/m
11.8
Breakdown voltage parallel to laminations (in 90±2°C transformer oil)
KV
35
Permittivity (50MHz)
-
5.5
Dissipation factor (50Hz)
-
0.035
Water absorption (D-24/23, 3mm in thickness)
mg
20
Density
 
g/cm3
2.0
Flammability
 
Class
V-0,V-1
Color
 
-
Natural

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