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Please help to identify the transistor (or amplifier) - RF Cafe
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vitaly_r
Post subject: Please help to identify the transistor (or
amplifier) Posted: Thu Aug 23, 2007 4:38 am
Lieutenant
Joined: Thu Aug 23, 2007 4:20 am
Posts: 1
Location: Israel
Hello all.
I need help in identifying the following transistors/amplifiers
(see links to the photos below). They differ only in the marking (on
the first the marking is "2n" and on the second "2i" or "2t").
http://www.flickr.com/photos/11912375@N04/1200471611/
http://www.flickr.com/photos/11912375@N04/1200471623/
I've tried to search according to the marking ana have not find
anything.
The components are used inside voltage control oscillators
(VCO) designed for high frequencies (4 - 6 GHz) and for 1 GHz bandwidth
each.
Every VCO has only one of this component.
The
VCO is a regular Colpitts oscillator and the component (I'm trying to
find out its P/N) is actually the transistor used to provide the negative
resistance.
As could be seen at the photos the component has
four leads, one of them is not used. The other three are used as Emitter,
Collector and Base of bipolar transistor.
I need the manufacturer
of these parts and part numbers if possible.
I will appreciate
your help!
Vitaly
Top
Noise
Post subject:
helloPosted: Thu Aug 30, 2007 9:50 am
Captain
Joined:
Tue May 02, 2006 4:59 am
Posts: 15
hello vitaly,
It is
very difficult to idetify this parts.
You must try to give us more
information.
I know some transistors has more details in there
side like these example :
http://www.maplin.co.uk/Module.aspx?Mod
... &U=strat15
Posted 11/12/2012
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