Microelectronics – Device under Test (DUT)
A burn-in test board (BIB) requires cleaning periodically to remove resistive residue buildup from test socket contacts. Due to the size and complexity of a BIB, as well as cleaning process compatibility and drying challenges, a BIB is typically cleaned manually using brushes, swabs, and volatile solvents such as IPA.
Robotic CO2 Composite Spray cleaning is an effective alternative to traditional BIB cleaning processes. Robotic CO2 composite spray cleaning performance generally depends upon the spray applicator’s position, speed, motions, and compliance with the BIB contact resistance (CRES) requirement. Higher spray pressure using larger CO2 cleaning particles and repetitive cleaning cycles improves cleaning process performance in terms of BIB recycle time. Stored spray cleaning programs (recipes) deliver consistent and selective contact pad cleaning for each type of BIB. Monitoring and controlling robotic CO2 composite spray cleaning process parameters are all done automatically. Operator interaction is limited to loading and unloading a BIB.
