Category | General Basics

Reliability Engineering in Power Electronics

Posted on 11 January 2020

    Reliability in power electronics is the extent to which a system can be expected to perform its intended function within the required tolerances. In other words, reliability is the system's ability to operate correctly under certain conditions over a given time period.     The definition of failure rate (FR) to be used [...]

Semiconductor Precursors

Posted on 27 December 2020

  Since the advent of electrical engineering, common tasks faced by the electrical engineer have included the conversion of mechanical energy to electrical energy, conversion of electrical energy to other forms of energy such as mechanical energy, heat, light, or other electromagnetic radiation. One challenge that has been of particular importance throughout the history of [...]

Doping Silicon Wafers

Posted on 18 December 2020

  Turning silicon into semiconductor chips used to create integrated circuits is a complex procedure that must be carried out meticulously. A single silicon wafer may undergo many successive processes to achieve the desired layers of conductor, semiconductor, and insulating material needed to produce the required circuitry. The wafer undergoes various steps to become properly [...]

Power Electronics Packaging Technology

Posted on 28 November 2020

  Power electronics packaging plays an inportant role in the design of semiconductor devices and systems. The packaging technologies used in the production of power electronics components largely determine the electrical, thermal, and mechanical properties of the resulting device. Selection of proper packaging materials is paramount. This article provides several examples and comparisons of packaging [...]

Pressure Contact Connection Technology

Posted on 26 November 2020

              Pressure contact connection technology only uses high pressure to form the desired connection between surfaces and unlike soldering or sintering requires no medium to form the connection. Large surfaces with different coefficients of thermal expansion can be reliably connected to one another using this technology. When connected pieces [...]

Heat Transfer in Power Semiconductor Devices

Posted on 20 November 2020

    Semiconductors generate heat during use. This heat must be removed in order to prevent further heating and consequent destruction of the semiconductor. Cooling is therefore key to the reliability of any given semiconductor. This article describes the nature of heat transfer as it applies to power semiconductor devices.   The smaller the temperature [...]

Silicon Production

Posted on 14 November 2020

              Depending on its purity, silicon can be used for many different applications in mettallurgie, photovoltaics, and in the production of semiconductors. It is therefore logical to classify silicon according to the amount of impurities contained in the silicon. Some of the most common types include raw silicon (98.99% [...]

Soldering Basics

Posted on 06 November 2020

                Soldering is the connection of two metallic materials using molten metal or a liquid alloy. The soldered region is heated to the point where the solder melts completely. The solder then has the characteristics of a liquid which spreads over the surface via capillary action. Solder molecules [...]

Cable Protectors

Posted on 05 November 2020

                    Using Cable Protectors Cable protectors are special purpose limiters which are used to protect service entrance and distribution cable runs. The National Electrical Code (NEC) does not require using cable protectors. When unprotected cables are paralleled, a singe conductor faulting to ground can result in [...]

Wire Bonding Technology

Posted on 23 October 2020

  Wire bonding is often used to connect a power semiconductor chip face with other chips or connecting elements. Wires used with wire bonding are generally composed of aluminum, gold, or copper. Since a bond wire is limited in its current capability, several bond wires are often used in parallel for higher amperages. Stitching, i.e. [...]