Power Derating for Transistors

Added two new main sections over the last few days, both of which come under the heading of Component Derating.

The first section covers Diode Temperature Derating Charts and is linked off the Diode Derating Guide Lines page. The new section covers six new pages, I won't re-list them here.

The second section covers Transistor Temperature Derating Charts and is linked off the main Component Derating page, which had not covered Transistors previously. The Transistor Derating Charts contain 27 new pages. Again, no need to relist all those pages address here.

A number of new graphic files were also added over the last few days, but I don't track those. So around 32 new pages have been added to the web site in the last few days.

All devices have a maximum current rating or power dissipation at 25C, but as the ambient air temperature is increased that maximum power dissipation must be reduced or derated.

Mini DisplayPort Specification

Apple Computer released the Mini DisplayPort standard in October of 2008. The new standard is very similar to the DispalyPort specification that was released by VESA in 2007. The new standard is controlled by Apple and differs from the original DisplayPort standard in a number of way, including a smaller connector and a different pinout.

Currently only the DisplayPort page links to the Mini DisplayPort page. With the link missing from the Video Monitor Buses page, the PC Interfaces Bus page, and a number of other computer bus related pages.

Only Apple uses the Mini DisplayPort interface....

Lithium-ion Batteries

Added a new page to hold some data on Lithium-ion Batteries. It holds a short description, and then some standard sizes and styles. The page is linked off the main page of Battery manufacturers.

Additional pages on this topic include Industrial Battery manufacturers, and manufacturers of Battery Sockets.

Battery Control IC Manufacturers.
Battery Management Buses; SMbus, and I2C Bus.