IR reflow soldering
IR infrared “convection” reflow is commonly used in commercial large volume SMD components mounting process. The main differences in reflow soldering processes and oven types lie in heat transfer methods – radiation, conduction, convection, and condensation. In fact, all heat transfers are used in modern reflow ovens. The heat is applied from above, below, or all directions dependent on the equipment being used. In classical infrared “radiation” reflow ovens, several ceramic heaters are transferring the heat to the assemblies, moving through the oven on a conveyor belt, by radiation.
Renesas Electronics Corporation, a premier supplier of advanced semiconductor solutions, and Integrated Device Technology, Inc. (IDT), a leading supplier of analog mixed-signal products, including sensors, connectivity and wireless power, today jointly announced the successful completion of Renesas’ acquisition of IDT, as of March 30, 2019 JST, March 29, 2019 PDT, following approvals by IDT shareholders and the relevant regulatory authorities.
Semicoa has implemented a new ceramic surface mount package for their qualified rectifier diodes from MIL-PRF-19500/477
Semicoa is a supplier that design and development of bipolar power devices for high-reliability military, defense, aerospace, and space applications for 50 years.
Screening activities for space applications require extreme care during the manipulation of the EEE parts to be assembled on a spacecraft. This means that special attention must be paid to avoid damage to the parts, as well as any contamination by foreign materials.
Humidity may affect the life expectancy of a component by creating stresses on the part materials and altering its electrical properties in a way that the component reliability is significantly diminished.
Temperature Humidity Test is those performed with the aim of evaluating the properties of materials used in components and the reliability of non-hermetic packaged devices in humid environments.
The U.S. Defense Logistics Agency has approved Solid State Devices, Inc.’s 1N5807, 1N5809, and 1N5811, with axial solid silver leaded hermetic packaging, for inclusion on its Qualified Product List (QPL). JAN, JANTX, JANTXV, and JANS screening levels per MIL-PRF-19500/477 are available for these 6 Amps, 50 – 150 Volts power rectifiers.
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 focal points, which compromises the suitable operation and reliability of microelectronic systems and can potentially decrease the lifetime.
Coating Thickness Verification
The thickness of metallic coatings is routinely determined by X-ray fluorescence spectrometry. This provides a basis for assessing the quality of coated materials and therefore influences decisions regarding disposition (acceptability) of the coated product as well as control of coating processes.
In modern satellites, the secondary power conditioning unit must supply a wide variety of low voltages, which are required by the payload modules, precisely and without fluctuations even at severe load variations.