Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Ms. Shelby Luo
ماذا يمكنني أن أفعل لك؟
FR4 ليس اسمًا للمواد ، ولكنه نوع من درجة مقاومة الحريق ، والذي يمثل مواد الراتنج يمكن أن تضعف ذاتيًا عند إطلاق النار. الآن هناك جميع أنواع مواد FR4 التي تستخدمها كـ PCB ، ولكن الغالبية مصنوعة من راتنج الايبوكسي وحشو الألياف الزجاجية.
|
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
|






مستودع

مستودع
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.