[sdiy] Fairchild uA726

[Paul Perry]

I doubt they would ever have been in DIP, the whole point is
that they were in a tiny thermostatically controlled oven
inside the can. If the heater burns out, they are irrepairable.

But the concept of thermostatic control has been extended to DIP,
notably by jim Williams (at National Semi, now at Linear). Barry Klein has
references to the two applications notes here:
http://members.cox.net/barryklein/UPDATE.htm
A CA3046 DIP transistor array is used. You have a matched pair, plus
one transitor for heating, and another as the temperature sensor. The man is 
a genius.
Note that it matters which transistors are used where in the circuit ;D

----- Original Message ----- 
From: "Cornutt, David K"
>Were any ever made in DIP packaging?  I've only ever seen the ones
>in the TO-92 metal cans.

paul perry Melbourne Australia