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      Complex Electronic Product Design and Prototyping
      237 East Main St. Gloucester, MA   01930
      Phone: 978-219-9009
      Email: designinfo@henning-eng.com

      We design, build, and seamlessly integrate electronic, electro-mechanical, and
      opto-mechanical hardware


      Informative Links

      Portfolio of

      Example Projects

      Custom Semiconductor Fabrication Equipment Examples

      Shown below are some pictures of tooling components used in the manufacture of high voltage transistors.   These are good examples of the variety of skills we can apply to create a solution for your application.   The transistors were part of an old product line and most of the associated fab equipment was custom designed.   The parts shown below were part of a project to correct and improve several different deficiencies in the fab process and collectively increased the yield by as much as 30%.   The design involved creatively applying multiple skills such as photomask design, working with machinable ceramics, photo etching and silver brazing.   This is another example of a project where good mechanical skills combined with electronic skills (knowledge of microelectronic processes) were necessary for a creative unique solution.

      chrome mask

      Special chrome mask designed for use with a photoresist process on individual Si die.  

      chrome mask close up

      Close up view of mask.   Special geometry of features was designed in AutoCAD.

      components for wafer dicing

      Components including wafer chucks custom designed to enhance a special process for cutting Si wafers.   All machining was done at Henning Engineering to save time and allow custom in-house machining and modification of the original piece of equipment.

      wafer alignment jig

      Jig for custom alignment of Si die and photomask.

      ceramic jig for precision silver brazing of transistor headers

      Special jig designed for void free silver brazing of Cu-Mo headers for transistors.   Jig is made of machinable ceramic and designed to work at temperatures of up to 1100 ºC.


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