Thursday, June 17, 2010

TO-205 FET Package

A new page holding a graphic of a TO-205 Metal Can was generated. This particular page gives the pinout for an FET, with the transistor pinout to be added later. As with any of the pages, this is linked off the FET Packages page.

Wednesday, June 16, 2010

SOT-23 Transistor Package

Another transistor package page was just generated. The new page covers a SOT-23 Package [TO-236AA]. The physical dimensions are provided for the SOT-23 transistor package, but I'm not really sure if the TO-236AA would use the same numbers.

The SOT-23 page is linked off the Transistor Packages page, and was added to the Sitemap. That brings about a total of 23 pages in that section.

Monday, June 14, 2010

DO-7 Axial Lead Diode

A new diode package was added today; DO-7 Axial Leaded Package. With the other component packages the DO-7 is linked off the Diode Package Styles page. These packages could be used by other two terminal components, but if they were the 'DO' which stands for Diode would not be used as part of the package name.

Sunday, June 13, 2010

3-Terminal TO-247 Semiconductor Package

Yet another new semiconductor package style added today. This time the component is a 3-Terminal TO-247AC Package. The 'AC' portion of the package type defines the package style depicted on the page. There are other styles of TO-247 components with many more than 3-leads. It's my impression that the TO-247 base number defines a  package with an exposed metal plate on the rear of the component that connects directly to the semiconductor die; however I did not take the time to look that up.

The page graphic shows a package out-line and the dimensions for a TO-247AC and gives the pinout for an FET, but the text also provides the pin out for a transistor package.

As with any other similar package, any type of semiconductor could reside in the body of this case; however only a FET and BJT are given as examples. A few N-Channel FETs that use this package include; 2N7563, 2N7564, and 2N7565 [150 to 320 watts].

As with all new page additions to interfacebus, the page gets a mention in this blog, and to the external Engineering Sitemap. In addition there is always at least one internal link, in this case off the Transistor Packages page.

So every new page addition receives at least three incoming links, with two of the incoming links being external to the web site. However at last check the links on the site-map were 'no-follow', which means there is no credit for the link. The no-follow thing is Google's idea, and I have no control over that. Even if the sitemap does no really provide any search engine ranking it still works as a site-map, which is what it really is.