Would any of you know if it's okay to parallel the collectors of=20
darlington transistors (TIP122) if they're all being driven with the=20
same (or very close to the same) signal?  They'll most likely be=20
switched on/off rapidly, but what if I were to run them in the linear=20
region.  I'm thinking I'll run into an issue with that, but not sure=20
about darlingtons.

Also, the datasheet for OnSemi's TIP122 says the tab is connected to the=20
collector, but the Fairchild datasheet and ST's datasheet don't seem to=20
indicate either way.  I have support calls in, but would anyone here=20
know if they are the same?  The intention is to figure out if there's=20
any issue with some of these all bolted to a common aluminum heatsink.

In case it helps...
http://www.onsemi.com/pub_link/Collateral/TIP120-D.PDF
http://www.st.com/web/en/resource/technical/document/datasheet/CD00000911.p=
df
https://www.fairchildsemi.com/datasheets/TI/TIP122.pdf

Thanks.

--=20
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