reflow


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reflow

(riːˈfləʊ)
vb (intr)
to flow again
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Air Products patented EA technology uses activated hydrogen at ambient pressure with a starting temperature as low as 100C to remove metal oxides from electroplated solder bumps on semiconductor wafers and permit reflow of these bumps to obtain the proper shape and size for interconnection onto a package or substrate.
com)-- New Yorker Electronics has released the Excel Cell Electronic GQ Series of 1-Pole Reflow Solderable Relays, now available with THR (Through-Hole Reflow) Technology.
Methods: A total of 136 patients with single coronary artery disease receiving PCI were divided into a reflow group and a no-reflow group to compare the level use of ET-1 alone with combined level of ET-1 and hs-CRP in PCI regarding sensitivity, specificity, positive and negative predictive values and accuracy for postoperative no-reflow.
However, melted solder at the component ball and PCB pad do not join or coalesce after reflow.
Objective: To evaluate the clinical and procedural predictors of no reflow in patient with acute myocardial infarction after primary percutaneous coronary intervention in tertiary care cardiac centre.
The ReFlow family of peripheral and coronary crossing catheters are designed with a unique extendable bevel tip, and used in conjunction with steerable guidewires of the physician's choice to enable rapid, routine, off-the-shelf lesion crossing.
In FIGURE 1 the connector pin has separated from the surface of the printed board after reflow.
The objective of this study was to test the hypothesis that the beneficial effect of trimetazidine during reflow of ischemic hearts is mediated by energy sparing and ATP pool preservation during ischemia.
lt;p>Producing thousands of lenses simultaneously on a single wafer using technology licensed from Tessera Technologies, Nemotek streamlines the manufacturing process delivering a more cost effective and miniaturized wafer level based on reflow compatible materials.
Manufacturers who implement pre-reflow optical inspection generally fall into one of four groups: those who build wireless products with RF shields, which typically are applied before the reflow oven and prevent 100% post-reflow optical inspection; those who build high-reliability products and need to do it right the first time; new product introduction centers that need to get paste-and-placement equipment up and running quickly and efficiently for each new board type; and those who believe that earlier detection and prevention will improve yields.
One technology that helps OEMs deal with RoHS and other environmental regulations is matte tin plating, which is suitable for addressing the requirements of lead-free reflow soldering.