[sdiy] Tying down unused Transistor pins?

Justin Owen juzowen at gmail.com
Wed Feb 27 17:56:33 CET 2013

Thanks Neil,

>> I'm using some transistor pairs in a design - but I have one spare/unused Tx left.>
>> Should I tie down any of the pins? Where/What to?

> If the transistors are fully isolated then tie all pins to GND.  Be
careful if any pins are connected to substrate like on LM3046.  Safest
then would be the -ve rail.

Is there a potential for bad things to happen if I connected all pins of a fully isolated Tx to the -ve rail?

...or to re-phrase that...

Would a data sheet specifically mention that Tx pair/array shared a common-substrate in all cases? 


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