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  • Medical Device Link . Ensuring Solder Joint Integrity
    accommodate only very narrow solder dams, the areas between pads filled with solder mask, and solder wells, the areas surrounding the pads that are devoid of solder mask. Thus, accurate solder mask application and registration is more difficult. Also, as the pad width narrows, the allowable solder
  • M538: Surface Mounting Instructions - Footprint Guidelines
    and will also allow for just enough excess surface area for adequate solder filleting. The following recommended footprints are suggested guidelines only and may require ground plane modifications for electrical and/or thermal considerations. When an increase in ground plane size is necessary, solder mask
  • SMT Adhesive Dispensing (.pdf)
    The adhesive dispensing process, can be defined as the process of transferring adhesive onto the PCB solder mask in a position suitable for holding the later placed components until the PCB is wave soldered. In some cases, this process is also used to hold heavy components in the second pass
  • S2083: Surface Mounting Instructions for PQFN Packages
    . With the correct pad geometry, the package will self-align when subjected to a solder reflow process and will also allow for just enough excess surface area for adequate solder filleting. The solder mask should be applied over bare copper (SMOBC) to avoid solder reflow under the solder mask