Reliability in Harsh Environments

Challenge: Ensure reliability in harsh environments

Devices used in extreme conditions, such as mobility applications, require higher reliability. Ceramics can enable reliability improvement through their stable material properties. See examples below.

Ceramic Package Reliability: Typical Test Results

Substrate material: Alumina A473
Substrate structure: 0.2 mm x 7 layers, with routing on top, bottom, and inner layers; outer dimensions, 55.0 x 35.5 mm
Line width: 0.2 mm min / Line gap: 0.3 mm min
Longest line: 84.2mm
Via diameter: Φ0.17mm

Test	Conditions	Open/Short	Insulation Resistance	Conduction Resistance	Observation	Result
Temperature Cycle	-65℃~＋150℃ Keep for 30 minutes Peak・Peak 15 minutes	3,000cyc	3,000cyc	3,000cyc	No significant change from initial values after 3,000 cycles	OK
High Temperature Storage	＋150℃	3,000h	3,000h	3,000h	No significant change from initial values after 3,000 cycles	OK
High Temperature and High Humidity	85℃ 85％RH	3,000h	3,000h	3,000h	No significant change from initial values after 3,000 cycles	OK
Thermal Shock (Liquid to Liquid)	0～100℃ 5 minutes => 5 minutes	3,000cyc	3,000cyc	3,000cyc	No significant change from initial values after 3,000 cycles	OK
Low Temperature Storage	-40℃	3,000h	3,000h	3,000h	No significant change from initial values after 3,000 cycles	OK
High Temperature Bias	150℃ 36V	N/A	3,000h	N/A	No significant change from initial values after 3,000 cycles	OK
High Temp. & High Humidity Bias	85℃・85％ 36V	N/A	3,000h	N/A	No significant change from initial values after 3,000 cycles	OK

*Test results are for reference only, not guaranteed values.
*Other tests can be performed as needed.