Thermal Cycling Tests of Dummy Modules Setup Pre-cycling resistance measurements IZM module results Alenia module underway Setup Modules built with CERN Flex V.2 and bare dummy module. Used Ecobond glue under MCC, pigtail bonding field, and 4 corners.
Only 4 columns monitored in real time during cycling
All columns measured on probe station before and after
On bad chip, all columns were open prior to tests & chip fell off after removing module from sector. Solder bumps left ½ on chip ½ on sensor.
RED = location of open column
32/270 columns failed
Carbon-carbon on sector