Hey Group,
I have a short list I got when I worked at SONY, that shows generic numbers (2SA, 2SB, 2SC, 2SD) for the 3 letter codes found on Japanese SOT23 type S.M.D. chip transistors. (If anyone is interested you can have a copy).
What's not on that list and what i'm looking for, is a 5 lead SOT23 type dual transistor with a common emmiter. A base, 1 lead for the common emmiters then the other base on one side and 2 collectors on the other side.
Does anyone have a list of manufacturers of components of this type, a method of crossing them, or a sub.
Thanks
Jim
From: Tinco Brouwer <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] To: Multiple recipients of list CHIPDIR-L <[EMAIL PROTECTED]> Subject: Re: MJE720 transistor search Date: Mon, 08 Sep 2003 01:54:21 -0800
H.C. Croon wrote:
The ON semiconductor site suggests as direct replacement the 2N4921Hello Group,
I have exausted all of my extensive resources in search for a Motorola MJE720 transistor in a TO-126 case for a 400 watt per channel BGW 750C power amp. I am having absolutely NO luck finding any info on it.
Does ANYONE have a source or as a LAST resort a legitimate sub.
It is functioning as the bias transistor with 300 volt MJE340 and MJE350 complimentary devices as pre-drivers in the same case style which I had no trouble obtaining data for.
Any info would be appreciated.
In an old transistor database I find:
MJE 720 NPN
VCEmax=40V
VCBmax=40V
VEBmax=5V
ICmax =1.5A
Ptot 2W (is this an error in the database? The first replacement is a 20W type)
hfe>=40
Hfe bias=0.15A (so hFE=10 ?; can we trust this data?)
first replacement BD169
second replacement 2N4923
/-------\ connection [ E C B ]
regards, Harry
http://www.onsemi.com/site/products/summary/0,4450,2N4921,00.html
you can even ask for a sample..
Regards, Tinco Brouwer Afd. Elektronica Biologie Vrije Universiteit Amsterdam
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