The basic parameters of ceramic PCB

This is the basic parameter of some ceramic printed circuit board, we are a OEM factory, we usually based on our customer's design files to produce the PCB&PCBA, If you have a special process requirements, you can directly contact us, we will help you solve.


Item 

Test Condition

   unite

senior

 material

Ceramic/Aluminium nitride Ceramic /Alumina 99.5%/Alumina 99%

Color status




average crystal size


μm

3-5

volume density


g/cm2

>3.74

water absorption


%

0

Vickers hardness 

Load 4.9

Gpa

>15

flexural  Strength 

Bending moment 80mm

Mpa

>324

Linear Coefficient of Thermal Expansion

20-500℃

20-800℃

1×10-

mm/℃

605-7.5

6.5-8.0

thermal conductivity

20℃

W(m-k)

>370

Dielectric intensity


Kv/mm

>12

Volume Resistance

20℃

300℃

500℃

-cm

 

>1014

>1011

>109

Dielectric Constant

1MHz


9.3-10.6

dielectric loss

1MHz


3×10-4

Thermal - shock 

850℃

times

>7

roughness of the surface

Ra(λ2)

μm

0.20-0.75