Some time ago, the original transistors used in the 505 became obsolete, it
was said. The Ten Tec list reported the 2N3553 could be used for a
replacement final, (two are required). But, the once common 2N3553 is also
hard to come by.
I notice on Questlink, a EE resource web page, that Philips Semiconductors
are listed as manufacturing the 2N3553. Hopefully, they still distribute
them. Philips is a world wide manufacturer, thus there should be many
distributors scattered around with this product.
Hope this is helpful, and you might file this if you are interested in 5w
class RF transistors. This one is a can type transistor.
Not sure if it was TO 5 or TO 39 size, but anyway, you get the idea.
-Stuart K5KVH
--
FAQ on WWW: http://www.contesting.com/FAQ/tentec
Submissions: tentec@contesting.com
Administrative requests: tentec-REQUEST@contesting.com
Problems: owner-tentec@contesting.com
|