Surface Mount Soldering
Surface Mount Soldering - Related Videos
08:00
Whole-Mount In Situ Hybridization
0 Views •
2023
Whole-mount in situ hybridization (WMISH) is a common technique used for visualizing the location of expressed RNAs in embryos. In this process, synthetically produced RNA probes are first complementarily bound, or "hybridized," to the transcripts of target genes. Immunohistochemistry or fluorescence is then used to detect these RNA hybrids, revealing spatial and temporal patterns of gene expression. Unlike traditional in situ hybridization techniques, which require thin tissue sections whose...
06:36
Flat Mount Preparation for Observation and Analysis of Zebrafish Embryo Specimens Stained by Whole Mount In situ Hybridization
0 Views •
Cited by 50 •
2014
The zebrafish embryo is an excellent model for developmental biology research. During embryogenesis, zebrafish develop with a yolk mass, which presents three-dimensional challenges for sample observation and analysis. This protocol describes how to create two-dimensional flat mount preparations of whole mount in situ (WISH) stained zebrafish embryo specimens.
03:34
Agar Mounting: A Basic Method of Mounting Live Zebrafish Embryos for Long-Term Imaging
0 Views •
2023
This video describes step by step instructions on mounting live zebrafish embryos on 6 well plate using low melt agarose. It also provides the process to acquire images of live embryos and analyze it using software.
09:42
Quantitative Whole-mount Immunofluorescence Analysis of Cardiac Progenitor Populations in Mouse Embryos
0 Views •
Cited by 4 •
2017
Here, we describe a protocol for whole mount immunofluorescence and image-based quantitative volumetric analysis of early stage mouse embryos. We present this technique as a powerful approach to qualitatively and quantitatively assess cardiac structures during development, and propose that it may be widely adaptable to other organ systems.
04:32
Whole Mount Preparation of Mouse Intestine: Using a Simple Gut-incising Device to Prepare Whole Mount
0 Views •
2023
In this video, we demonstrate whole mount preparation of the mouse intestine using a simple gut-incising device. The resulting mounts are of superior and uniform quality and can be used for histological analyses.
FAQs
Solder paste deposition places the solder material onto the PCB pads before components are positioned. Stencil printing is an important control point because the deposited paste must support consistent formation of joints during heating. In engineering production, the quality of this step directly contributes to assembly reliability, while poor deposition can compromise the subsequent placement and reflow stages.
Controlled heating melts the deposited solder paste and allows the liquid solder to wet the component leads or terminals and the PCB pads. The reflow profile governs this thermal sequence, including the transition from deposited material to formed joint. After heating, cooling solidifies the solder, preserving the electrical and mechanical connection created during reflow.
Wetting allows molten solder to make contact with both the component termination and its conductive pad, which is essential for forming the intended connection. Cooling then changes the solder from a molten state to a solid joint. Together, these stages determine whether the assembly achieves the electrical continuity and mechanical attachment required for reliable PCB fabrication.
Because components attach directly to conductive pads on the PCB, the assembly approach supports densely populated circuit layouts rather than requiring the overview-level focus on component attachment alone. This enables compact and lightweight electronic designs and contributes to efficient PCB fabrication. Those characteristics make the method relevant to engineering projects where board size, mass, and component density matter.
A typical workflow begins with stencil printing of solder paste onto the PCB pads, followed by component placement using placement equipment. The populated board then passes through controlled heating so the solder melts, wets the terminals or leads, and forms joints during cooling. Inspection and attention to the reflow profile complete the quality-focused process described for engineering assembly.
Stencil printing, component placement, the controlled reflow profile, inspection, and the resulting joint quality all influence the assembly outcome. These factors are interdependent: paste must reach the intended pads, components must be positioned, heating must support solder melting and wetting, and inspection must assess the completed result. Managing them helps determine assembly reliability during PCB fabrication.
Engineers apply Surface Mount Soldering across prototypes, consumer electronics, industrial controls, and high-volume manufacturing. The same core sequence can therefore support early design work as well as efficient production of densely populated boards. Its relevance changes with the setting: prototypes emphasize assembly feasibility, while manufacturing contexts depend strongly on placement equipment, reflow control, inspection, and joint quality.