Test board variables included thickness, pad configuration, and pad size.
The Laboratory-designed test board will automatically apply a sequence of test conditions.
These factors include solder composition, underfill, substrate size, lid thickness, stiffener ring width, test board size, soldermask opening on the substrate side, and pad size on the test board.
These factors include diameter, pitch, and standoff of the solder joints, size of the solder connection opening on the die side, thickness of the pad on the test board, thickness of the test board, and dimension of the die.
The failure modes of DDR3 found were SEU, SEFI, SEL, test board rebooting by itself, unknown data, etc.
In order to make all ball grid array (BGA) packages on the same test board subject to the uniform stress and strain level during drop impact, a test board in round shape is designed to conduct drop tests.
To investigate the module performance, an analog test board with four 16-channel preamplifier ASICs was designed to be interfaced with the LabPET™ digital processing electronics.
The stereoscopic vision test board is employed to construct the disparity map of real scenes and verify the practical application effect of the algorithm.
The device under test is implemented using discrete n- and p-FETs arranged as a modular test board together with automated fault injection and test lines.
In the second in vitro scenario, the extracted component is implanted in an external test board or in an unlocked device of the same brand and model.
An automatic testing procedure has been devised, including design and fabrication of a suitable test board and of an optical bench.
