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产品介绍

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Void Free AMB Substrate

KI 作为全球首家,自 2022 年起开始 AMB 的量产与供货。

KI 的特殊工艺可在铜与陶瓷之间的界面保持无空洞(Void)的接合状态。

在异种材料的接合中,由于热膨胀系数差异,围绕空洞(Void)处的结合力可能减弱并发生剥离,从而对应用于电动汽车与航天领域的功率模块运行可靠性造成重大影响。

KI AMB 以高可靠性为基础,已广泛应用于电动汽车功率模块及卫星电源模块。

Application
Power Modules for xEV, renewable energy, aerospace
Features
Void Free in interface between copper and ceramic
Thermal Shock Test : 3000 Cycles
Test Condition : -55~150℃, 30 min/cycle, Total 1500 Hours
Major reference
EV Power module : German EV power module
Satellite Power module : China Satellite
Industrial Power module : Littelfuse TO-247 (ISO-247), SMPD

Void Free Picture

Data sheet

Product STC Substrates AMB Substrates
Ceramic materials Al2O3 AlN-170 AlN-130 AlN-170 Si3N4
Raw Materials Ceramic thickness (mm) 0.25 / 0.38 / 0.635 / 1.0 0.38 / 0.635 0.25 / 0.38 / 0.635 / 1.0 0.25 / 0.32
Cu thickness (mm) 0.006~0.3 0.127 / 0.3 / 0.4 / 0.5 / 0.8
Thermal CTE ppm/K @ 20°C - 400°C 6.7 4.6 4.6 4.6 2.6
Thermal conductivity W/mK @ 25°C 24 180 130 180 85
Mechanical Bending strength MPa 400 450 650 450 800
Fracture toughness MPa・√m 3.0 3.0 2.4 3.0 6.5
Electrical Breakdown strength kV/mm (DC) >15 >15 >15 >15 >15
Electrical resistivity Ω·cm @ 25℃ >1014 >1014 >1014 >1014 >1014

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