Tech data for TT series transistors wanted

[Ross Herbert]

TT series transistors were made by STC in Australia in the 60's - 70's
era so the chance of any datasheet website having documentation is
nil. Only techs from Aus will have come across them.

Specifically looking for data on TT403, a PNP TO5 can type, but other
types also welcome.

Thanks for any help you can give...

 

[Phil Allison]

"Ross Herbert"

TT series transistors were made by STC in Australia in the 60's - 70's
era so the chance of any datasheet website having documentation is
nil. Only techs from Aus will have come across them.

Specifically looking for data on TT403, a PNP TO5 can type, but other
types also welcome.

Thanks for any help you can give...

** The TT800 ( NPN ) and TT801 (PNP) were among my personal favourites
from about 1971 to 1978.

TO5 pack,

Vce = 80 volts

Ic = 1.0 amps

hfe = 100

Ft = 40 MHz

Pd = 1 watt.


IIRC

" I lived through the 70s and remember it all ..... unfortunately ".




........ Phil

 

[[email protected]]

"Ross Herbert"


** The TT800 ( NPN ) and TT801 (PNP) were among my personal favourites
from about 1971 to 1978.

TO5 pack,

Vce = 80 volts

Ic = 1.0 amps

hfe = 100

Ft = 40 MHz

Pd = 1 watt.


IIRC

" I lived through the 70s and remember it all ..... unfortunately ".




....... Phil

Just *curious*, Phil, were you ever
able to track down the issue with
that vile Ashdown amp?

 

[Alan Rutlidge]

" I lived through the 70s".




....... Phil

Hmmm. Pity

 

[Phil Allison]

<[email protected]

Just *curious*, Phil, were you ever
able to track down the issue with
that vile Ashdown amp?

** Err - you mean the "Fallen Angel 60 " ???

PCB leakage was identified as the source of the hum problem & I ended up
cutting the tracks running to pin 7 of each of the input tubes and replacing
them with silicon coated wire links. Also, I added extra filtering after
the bridge with two 150 uF, 400 volt electros in series glued to the
hassis - increasing the capacitance from 24 uF to 100uF.
That did the trick.

Interestingly, the owner was an American girl named "Cadence" who referred
to the amp as " my baby " !!



........ Phil

 

[[email protected]]

<[email protected]


** Err - you mean the "Fallen Angel 60 " ???

PCB leakage was identified as the source of the hum problem & I ended up
cutting the tracks running to pin 7 of each of the input tubes and replacing
them with silicon coated wire links. Also, I added extra filtering after
the bridge with two 150 uF, 400 volt electros in series glued to the
hassis - increasing the capacitance from 24 uF to 100uF.
That did the trick.

Good for you.

Interestingly, the owner was an American girl named "Cadence" who referred
to the amp as " my baby " !!

One man's junk is another man's treasure....