The placement of components
Once
the
netlist
is
exported,
it
is
imported
into
the
routing
software
which
translates
each
line
of
code
into
connections
and
with
all
the
indications
of
the
components
present.
Positioning
is
one
of
the
most
critical
phases
of
the
Master
PCB
because
the
choice
and
positioning
criteria
adopted
for
the
components
will
influence
the
routing
of
the
tracks.
A
good
positioning
at
this
stage
will
avoid
many
problems
of
interference,
crosstalk,
and
coupling
of
critical
signals.
The
positioning
of
the
components
will
always
be
carried
out
taking
into
account
the
electrical
functions
of
the
components,
avoiding
the
no-go
areas
for
placement
and
for
the
routing
of
the
tracks.
Track
routing
is
the
interconnection
of
all
the
connections
present
in
the
wiring
diagram
between
the
components.
The
tracks
that
will
be
created
will
connect
the
pin
pads
of
the
components
and
will
use
multiple
interconnection
layers
to
concentrate
all
the
connections
inside
the
PCB.
Each
layer
is
interconnected
by
metalized
holes,
also
called
vias.
The
size
of
the
tracks
will
be
suitably
calibrated
according
to
the
electrical
constraints
of
the
signals
that
will
cross
the
board.
All
electrical
insulation
(track-track,
track-pitch,
pitch-pitch,
track-floor,
floor-via,
track-away,
pitch-away,
etc.)
must
be
carefully
chosen.
