Atlas DCA User Guide September 2014 – Rev 11
Page 18
Digital Transistors
Digital transistors aren’t really digital, they can act in
both a linear or fully on/off mode. They’re called
“digital transistors” because they can be driven
directly to digital outputs without the need for current
limiting resistors.
These parts are most often found in surface mount packages but
are becoming more common, particularly in mass produced
electronic products.
The presence of the base resistor (and
the base-emitter shunt resistor) means
that it isn’t possible for the Atlas DCA
to measure the gain of the device, so
only the device polarity (NPN/PNP)
and pinout is shown.
B
C
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