Features

• High strength
• High reflectivity
• High thermal shock resistance
• Excellent processing performance

Application

• Medium power supply module
• Medium power LED
• Instruments

Project		Test conditions	Unit	Al 2 O 3 /ZrO 2
Project		Test conditions	Unit	ZTA
Material		–	–	Al 2 O 3 /ZrO 2
Appearance		–	–	White dense
Surface roughness		Ra	μm	0.2~0.5
Density		–	g/cm 3	≥3.85
Physical properties	Bending strength	3 -point bending resistance	MPa	≥550
	Vickers hardness	Load 4.9	GPa	≥14
	Water absorption	–	%	0
Thermal performance	Thermal conductivity	25℃	W/(m·k)	≥23
	Linear thermal expansion coefficient	25-500℃	1×10 -6 mm/℃	6.6~7.5
	Thermal shock resistance	800℃	Time	≥10
	Specific heat	–	J/(kg·K)	720
Electrical properties	Dielectric constant	1MHz/25℃	–	10~11
	Dielectric loss	1MHz/25℃	x10 -4	≤3
	Volume resistivity	25℃	Ω·cm	> 10 14
	Breakdown voltage	–	KV/mm	> 15
Light performance	Reflectivity	Reflectivity meter	–	≥95%
Light performance	Whiteness	Whiteness meter	–	–

Specifications and Dimensions

Material	Unit	Al 2 O 3	ZTA	AlN	Si 3 N 4
Effective dimensions ( A , B )	mm	50.8-190	50.8-190	50.8-190	138*190
Thickness ( T )	mm	0.25-1.5	0.25-1.5	0.25-1.0	0.25 , 0.32
Thickness tolerance	mm	±5% ( Min±0.03mm )	±5% ( Min±0.03mm )	±5% ( Min±0.03mm )	±5% ( Min ±0.03mm )
Warpage ( C )	mm	≤0.3%	≤0.3%	≤0.3%	≤0.3%
surface roughness	μm	0.2-0.6	0.2-0.5	0.2-0.75	0.2-0.75
Size, thickness and surface roughness can be customized

• Laser processing

Laser processing diagram

• Grinding and polishing sheet roughness table

Grinding and polishing sheet roughness table diagram

Project		Qualified		Special Grade
Internal dimension tolerance		±0.05mm		±0.03mm
External dimension tolerance		±0.15mm		±0.1mm
Hole tolerance (φ0.07-0.15mm)		±0.05mm		±0.02mm
Hole tolerance (φ ＞ 0.15mm)		±0.1mm		±0.02mm
Project	Surface roughness (μm )
	Qualified		Special Grade
Grinding	0.3-0.6		0.3-0.5
Fine grinding	0.1-0.4		0.1-0.3
Polishing	≤0.1		≤0.05