Indium Blog

Specifying Dimensions for Pure Indium Preforms

  • Indium
  • Solder Preforms

  • We have all ordered something in the wrong size - it’s frustrating. In most cases the width and length of the solder preform are dictated by the component footprint. This may be a no-brainer for you, but what if you bought an order of custom preforms and later learned that the thickness was incorrect (and now there is the wrong volume of solder in your interface)? There’s no need for that to happen with our team of Technical Support Engineers on hand! They can give you advice on all aspects of soldering. An answer to the question “how thick does my preform need to be?” is no problem at all. With a pure indium Heat-Spring® this becomes even more important. Heat-Springs are designed to work optimally at the correct thickness, so it may be best to reach out to us so you get the perfect preform the first time.

    If you’re looking for a complicated part, we’ll need an engineering drawing, but for simple parts (squares, rectangles, discs, washers) we can work with basic dimensions. As a basic rule: if you have a radius involved, you’ll probably need to send a drawing. We’ll be discussing engineering drawings in a later post. In the meantime, our Application Engineers can offer support with your indium preform print, so don’t hesitate to ask if you need advice. We are here to help!

    This post is part of the “Complete Intro to Pure Indium Preforms” series

    Authored by previous Indium Application Manager Jim Hisert