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.
Friday, December 5, 2008
Power Derating for Transistors
Subscribe to:
Post Comments (Atom)
3 comments:
12/7/08 Looks like 50 new pages were added under the Transistor derating and Diode Derating topics. The main Transistor Power Derating page made the search engine listing yesterday; however, I didn't see any of the sub-pages in the search listings.
Hmm, the page shows up in Google search but not in the local web site search bar [also by Google]. Guess I need to wait for the spider to come by, normally less than 15 days.
7/11/08 Really only the top Component Derating page shows up with the new term 'Transistor'. No other sub pages shows up yet in Google. I see a few sub pages in Yahoo search, but no pages in MSN Live search.
2/24/10 Looks like I added around 100 pages relating to transistor derating by temperature [back in 2008], but only the first 50 get any kind of hits.
I'm sure the number of visits has a lot to do with the transistor part number, but it also may have something to do with how I wrote the page. Although much of the content is similar it does vary a bit ~ remember how to derate a transistor is always the same, only the slot of the curve changes [how much to reduce output current at what temperature].
But the page do vary in the amount of text, guidelines and how the copy is written. The main reason the text is changing is because I would up-date or enhance only a dozen pages at a time, so I would not end up with 100 exact pages on transistor current derating.
Still some pages will never see any visitors. The page covering the 2N3847 transistor [T3 package] has only had 7 page views in the last 15 months?
Another example is the 2N6298 darlinton transistor with 14 page views ~ I see a typo, so he gets updated.
Ya know, at least half those page views must be from me, which makes it even worse.
Post a Comment