White Papers

Check the box next to each paper you want to download. You may download as many papers as you wish. After selecting papers and completing the contact information form on this page, the paper(s) will be e-mailed to you at the e-mail address you provide.

Papers by Olivier Lauzeral (iROC)

• Challenges in Supply of Ultralow Alpha Emitting Solder Materials

  by Andy C. Mackie PhD, Olivier Lauzeral (iROC)

  The names of high-energy subatomic particles such as alpha, beta, gamma, x-rays and cosmic rays will be well known to every high-school student. Table 1 shows some of the most common types of particles and a description of them.

  In aerospace electronics, any of these particles may be encountered and each presents a unique challenge for applications, such as satellite telecommunications. Even at sea level, much of the semiconductor packaging experts are aware of the increasing need for controlled alpha-emissions in materials that are immediately adjacent to the chip surface. This need is driven by the shrink in size of the active device (characterized by the “equivalent DRAM gate length”¹) present in the active device layers of a semiconductor chip.

  ultra low alpha, semiconductor packaging

  [Permanent Link to this Paper]

  Posted on 14 Oct 2011

The paper(s) you request will be e-mailed in .pdf format to the e-mail address you provide. Please allow up to an hour for the server to process your request.

All fields are required.