Transistor data.

[Brian Goldsmith]

Would anyone have any data or equivalent type for a TT4121 made by
ITT.Most probably PNP,Germanium, but all the usual sources come up
zilch.
TIA,Brian Goldsmith.

 

[Phil Allison]

"Brian Goldsmith"

Would anyone have any data or equivalent type for a TT4121 made by
ITT.Most probably PNP,Germanium, but all the usual sources come up
zilch.

** Those antique Italian electronic accordions are not worth the trouble
Brian ...




.......... Phil

 

[John Robertson]

If you have a good one, then you can run a transistor curve tracer on
it to identify it's characteristics enough to find a suitable
replacement.

Perhaps someone here (closer to you) has one of these sitting on a
shelf that they could help you with - I have a curve tracer but I'm in
Canada. (other side of the pond - the long way!)

John :-#)#

On Fri, 17 Oct 2003 07:58:29 GMT, "Brian Goldsmith"
<brian.goldsmith@nospamecho1.com.au> wrote:

Would anyone have any data or equivalent type for a TT4121 made by
ITT.Most probably PNP,Germanium, but all the usual sources come up
zilch.
TIA,Brian Goldsmith.

(Please post followups or tech enquires to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

 

[Brian Goldsmith]

"Phil Allison" wrote

Would anyone have any data or equivalent type for a TT4121 made by
ITT.Most probably PNP,Germanium, but all the usual sources come up
zilch.

Those antique Italian electronic accordions are not worth the trouble


**** The colloquial term "squeezebox" springs to mind but the term has
other connotations!!!

Sorry Phil,the TT4121 is for an AWA G250-2 10-610 kHz Test
Oscillator,there are a few and appear to have been fitted as
original.Anyone got a copy of circuit or even a manual?All costs
gratefully prepaid.

Brian Goldsmith.

 

[Alan Rutlidge]

"Brian Goldsmith" <brian.goldsmith@nospamecho1.com.au> wrote in message
news:FiNjb.154150$bo1.152756@news-server.bigpond.net.au...

Would anyone have any data or equivalent type for a TT4121 made by
ITT.Most probably PNP,Germanium, but all the usual sources come up
zilch.
TIA,Brian Goldsmith.

Hi Brain,

This might be the same as a PN4121. It is used extensively in AWA test gear
of about that vintage.

X7390 PN4121 PNP 40V 0.1A TO-92 SILICON G/PURPOSE 208 $0.22

http://www.tecs.com.au/products/Product_Typelisting.asp?sdiss=752

Worth a try. It will cost all of 22c to find out if it isn't suitable.

Cheers,
Alan

 

[Brian Goldsmith]

"Alan Rutlidge" wrote

Would anyone have any data or equivalent type for a TT4121 made by
ITT.Most probably PNP,Germanium,

This might be the same as a PN4121. It is used extensively in AWA test
gear
of about that vintage.

*** It certainly is Alan!! Some one had replaced the 4121 with a
germanium AF series,no wonder the output was down.
Many thanks,Brian Goldsmith.