text: The low isotropic coefficient of thermal expansion (CTE) value of AlSiC-9 (8 ppm/°C: 30 – 100°C) is compatible with the thermal expansion value of the die or substrate used in IGBT applications. CPS say that the AlSiC CTE match reduces the mechanical stresses on IGBT die and substrates that is induced by thermal power cycling, which improves reliability of substrate attachment and reduces die cracking failures. This eliminates the need for stress compensation material layers that are required in copper baseplate assemblies, simplifies assembly and reduces thermal resistance..
  According tp CPS, in high power applications, IGBT modules assembled with AlSiC baseplates have a service reliability of many tens of thousands of thermal power cycles over Cu equivalent systems.
  
  Totnes, in South Devon is well-known for its beautiful countryside, and eco-aware residents. When local members of the Devon Badger Group found out the government was expanding the badger cull into the area, they sprung into action quickly and organised Wounded Badger Patrols during the day, and in the evenings. There is a huge area to cover in South Devon alone, and the organisers are aware that they need as many boots on the ground as possible in order to save badgers from gunmen.
  NFA joined a Wounded Badger Patrol in Totnes recently and we were pleased to see the support they had, but like the organisers, we were surprised that there weren’t even bigger crowds out to help, given the reputations Totnesians have as being very connected to nature.
  Totnes Wounded Badger Patrol organiser James Stewart is an expert on badgers, and has been dedicating his time to saving them from persecution for over 20 years. We asked him his thoughts on the badger cull, and how the people of Totnes are reacting to it: