Raman thermometry is a thermal characterization technique which makes use of Raman scattering phenomena to determine the local temperature in microelectronics systems. Non-contact character. High spatial resolution (sub-micron scale). In-depth analysis within IR-transparent...
IR thermal microscopy (or infrared radiation thermometry) analyses the spatial distribution of the emitted infrared radiation either over the device surface or eventually inside the inspected device. This technique enables us to obtain 2D temperature maps, which are used to...
XRF is a non-destructive and quick analytical tool to determine the chemical elements present in the specimen. In particular, it combines low detection limit (particularly in the case of heavy elements) with quick and easy sample preparation.
Microsectioning and materialographic inspection are mandatory in different verification and qualification standards issued by international agencies and public bodies such as the European Space Agency (ESA), the Defense and Logistics Agency (MIL DLA specifications) and the IPC...
Tin Whisker Growth Results comes after the investigations and thanks to the methods carried out by Alter Technology, we can reach some conclusions. An important starting point must be stressed that NONE OF THE “AS RECEIVED” SMD DEVICES POSSESSED WHISKERS. It was confirmed by...
This study corroborates that the Nickel (Ni) underlayer recommended by the industry as a diffusion protective barrier of the contact, is effective in delaying Stannum (Sn) whisker growth under ambient temperature/humidity storage conditions or during temperature cycling.
Submicrometric-nanometric objects nowadays present in the design of integrated circuits induce singular heat transport phenomena leading to the formation of hot-spots or strong temperature gradients at specific local points, which compromises the suitable operation and...
The surface mount device beads under study have two rectangular contacts at opposite sides. With bends of 90 degrees that have an approximate planar surface of 3.048 mm2 each. In order to comply with the standard JESD22-A121, 12 leads on at least 6 components must be examined...
The Tin Whisker is a conductive hairy-like crystalline structures of tin that grow spontaneously from a tinned surface, usually as a result of stress of some sort, and maybe long enough to cause a big problem for those applications demanding high level of reliability. In this...
The use of differential (or balanced) digital and analog circuits for information processing has increased in recent years . When transmitting high-speed electrical signals, both the electromagnetic (EM) fields generated by the transmitted signals and the ground plane return...
The procurement, evaluation, screening and lot acceptance of RF devices in leadless SMD packages to be used in spacecraft applications show unexpected difficulties whenever degolding or retinning processes are required. This is associated to the induced lack of coplanarity in...
A compact balanced-to-balanced diplexer composed of two balanced bandpass filters is proposed in this letter. The balanced filters are implemented using compact edge-coupled square split-ring resonators. The design methodology is based on the standard coupled-resonators filter...
