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Mon Dec 20 19:00:49 EST 2010

Futurlec transistor arrays

What am I looking for?

  - Thermal matching.

  - One transistor free for on-line calibration feedback

  - One (automated) factory run for calibrating other circuit
    parameters, i.e. resistors.

Only checking through-hole components, what's the cheapest usable
transistor array?

MC1413   - Darlington Transistor Array  7     $0.28 [1]
CA3046N  - NPN Transistor Array         2D+3  $0.80 [2]
CA3086N  - Transistor Array NPN         2D+3  $0.79 [3]
LM3046N  - Transistor Array             2D+3  $1.10 [4]


The cheapest one, MC1413[1] are 7 NPN darlingtons, common emitter.
I'm not sure if those are very useful.  The other 3 are clones: 2
differential NPN + 3 NPN, fully accessible.


[1] http://www.futurlec.com/Datasheet/Linear/MC1413.pdf
[2] http://www.futurlec.com/Datasheet/Linear/CA3046N.pdf
[3] http://www.futurlec.com/Datasheet/Linear/CA3086N.pdf
[4] http://www.futurlec.com/Datasheet/Linear/LM3046.pdf



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