DCB Ceramic PCB Design Guide| DCB Design Guide | Ceraamic PCB Gesign Rule | DCB Ceramic PCB Design Rule by Best Technology

Currently there're three basic substrate to make ceramic PCB, and different cermaic circuit board making technology will use different substrate.

Aluminum Oxide (Al2O3)
Aluminum Nitride (ALN)
BeO

Becuase the toxicity of BeO and not environmental during manufacturing, now most popular material is Al2O3 (cheaper) and ALN (expensive). Here are more details for them.

A) Technical Specification of 96% Alumina (Al2O3) Ceramic Substrate

Material Property		Unit	Value	Remarks
Color		\	White
Medium grain size		um	3-5
Surface roughness (Ra)		um	0.6 (Max)
Density		kg/m3	3780
Rate of water absorption		%	0
Bending strength	4 point method (40x4x3mm3)	Mpa	400
Bending strength	Dual ring method (0.63mm substrate thickness)	Mpa	500
Modulus of Yang		Gpa	340	吉帕斯卡
Thermal conductivity (20-100℃)		W/m-K	24
Specific heat		J/kg.K	800
Coefficient of Linear expansion	200-300C	1*E-6 / K	6.8
	20-600C		7.3
	20-1000℃		8.0
Dielectric constant	1 MHZ		9.8+/-10%
Dielectric constant	1 GHZ		10.0+/-10%
Dielectric loss factor (1 MHz)		1*E-3	0.3
Breakdown Voltage	2.0mm substrate	KV/mm	34
	1.0mm substrate		17
	0.635mm substrate		11
Volume resistivity	20℃	Ohm * cm	1*E13
	200℃		1*E12
	400℃		1*E11
	600℃		1*E8

B) Technical Specification of Aluminum Nitride (ALN) Ceramic Substrate

Material Property		Unit	Value	Remarks
Color		\	White
Medium grain size		um	3-5
Surface roughness (Ra)		um	0.3~0.5
Density		kg/m3	>3,300
Rate of water absorption		%	0
Bending strength	4 point method (40x4x3mm3)	Mpa	400
Bending strength	Dual ring method (0.63mm substrate thickness)	Mpa	500
Thermal conductivity (20℃)		W/m-K	>=170
Specific heat		J/kg.K	800
Coefficient of Linear expansion		1*E-6 / K	4.4
Dielectric constant			9.0+/-10%
Dielectric loss factor (1 MHz)		1*E-3	0.3
Breakdown Voltage	2.0mm substrate	KV/mm	34
	1.0mm substrate		17
	0.635mm substrate		11
Volume resistivity	20℃	Ohm * cm	1*E14

Please click here for immediate quotation online
Please contact us today for more information about Ceramic circuit board (Ceramic PCB).

Online Service

Skype Online

Online Service

18 years of dedicating to PCB manufacturing