IPC-TM-650 EN 2022 试验方法--.pdf - 第291页

IPC-TM-650 Number Subject Date Revision Page 2 of 2 7/89 2.4.18.2 Hot Rupture Strength, Foil 5.11 At least three test specimens, per lot, are tested at each test temperature. 5.12 To avoid creep and/or thermal effects, k…

100%1 / 824
IPC-MF-150
The Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
Material in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
Page 1 of 2
IPC-TM-650
TEST
METHODS
MANUAL
1
.0
Scope
This
method
determines
the
hot
rupture
strength
of
foil
by
measuring
the
elevated
temperature
rupture
pressure
and
the
bulge
height
at
rupture.
2
.0
Applicable
Documents
3
.0
Apparatus
3.1
EMK
Model
HD550
Hot
Rupture
Testing
Machine,
or
equivalent,
with
fixed
apertures
for
17
micron
[1/2
oz.],
34
micron
[1
oz.]
and
68
micron
[2
oz.]
foil.
3.2
Mettler
balance,
Type
H16
Cap
80
gms,
or
equivalent;
and
hand
shears
or
precision
paper
cutter.
4
.0
Test
Specimen
Generation
4.1
Nine
(9)
test
specimens,
up
to
1
14
x
1
14
mm
[4.5
x
4.5
inches]
in
size,
are
required
for
each
sample
lot.
Larger
sample
panels
can
be
cut
into
specimen
squares
by
the
use
of
a
template
and
hand
shears.
4.2
Foil
samples
should
be
representative
of
foil
material
lots
as
defined
in
IPC-MF-150.
4.3
For
the
rupture
testing
of
in-house
PTH
copper,
electro¬
plate
a
sample
onto
a
smooth
stainless
steel
panel
per
exist¬
ing
PWB
shop
practice.
The
current
density
used
for
sample
preparation
should
be
equivalent
to
that
used
in
PTH
produc¬
tion
schedules.
The
deposited
thickness
should
be
held
within
±5%
of
0.018
mm
[1/2
oz],
0.035
mm
[1
oz.],
or
0.071
mm
[2
oz.]
foil.
4.4
Thermal
strain
relief
prior
to
rupture
testing
is
limited
to
times
and
temperatures
at
or
below
the
highest
heating
cycles
used
in
PWB
production.
5
.0
Test
Procedure
5.1
For
Inner-layer
foil
specimens,
record
the
date,
source,
lot
identification,
nominal
foil
thickness,
foil
type,
foil
grade,
and
the
aperture
diameter.
Number
2.4.18.2
Subject
Hot
Rupture
Strength,
Foil
Date
Revision
7/89
Originating
Task
Group
N/A
5.2
For
PTH
foil
specimens,
record
the
date,
source,
PTH
bath
type,
the
measured
thickness
and
the
aperture
diameter.
5.3
Aperture
Plates
Select
and
install
the
desired
aperture
plate
for
0.018
mm
[1/2
oz.],
0.035
mm
[1
oz.]
or
0.071
mm
[2
oz.]
test
specimen.
5.3.1
Aperture
diameters
are
fixed
at
22.2
+
3.2
mm
[0.875
+
0.125〃
r]
for
1/2
oz.
foil;
22.2
+
3.2
mm
[1
.875〃
+
0.125〃
r]
for
1
。乙
foil;
and
73
+
3.2
mm
[2.875〃
+
0.125〃
r]
for
2
o
乙
foil.
5.4
Flow
Control
Rate
of
flow
is
fixed
for
the
stress
rupture
test.
The
flow
rate
is
fixed
by
setting
the
source
pressure
at
100
psig,
sealing
the
system
and
adjusting
the
flow
to
reach
50
psig
in
5
seconds.
5.5
Test
Temperature
Set
the
test
equipment
for
tests,
in
turn,
at
room
temperature,
350°F
[1
77℃]
and
550°F
[288℃].
Temperature
stabilization
for
hot
tests
requires
a
minimum
of
1
5
minutes
at
temperature
(without
foil
specimens)
before
the
first
test
is
run.
5.6
Pressure
Set
the
test
pressure
regulator
at
the
source
pressure
limit.
Re-set
the
pressure
gauge
to
zero
and
set
the
Peak
and
Hold
modes.
5.7
Specimen
Insertion
Place
treated
foil
specimens
in
the
test
fixture
with
the
treated
side
up,
others
with
either
side
up.
Clamp
in
place
with
sufficient
force
to
provide
a
pressure-
tight
seal.
5.8
Height
Position
the
height
gauge
at
the
center
of
the
aperture.
Re-set
the
height
gauge
to
zero
and
set
the
Peak
and
Hold
modes.
5.9
Turn
on
the
test
pressure.
After
rupture
occurs,
turn
the
pressure
off,
and
remove
the
test
specimen.
5.10
Record
the
test
temperature,
the
pressure
at
rupture,
and
the
bulge
height
at
rupture.
With
digital
gauges,
take
Peak
readings
within
1
0
seconds
of
rupture
(because
of
an
inherent
decay
in
the
peak
signal).
IPC-TM-650
Number
Subject Date
Revision
Page 2 of 2
7/89
2.4.18.2
Hot
Rupture
Strength,
Foil
5.11
At
least
three
test
specimens,
per
lot,
are
tested
at
each
test
temperature.
5.12
To
avoid
creep
and/or
thermal
effects,
keep
the
total
test
cycle
time
(Steps
5.7
through
5.9)
under
2
minutes.
6.0
Evaluation
6.1
The
stress
rupture
test
is
quantitative
for
rupture
pres¬
sure
and
for
bulge
height
at
each
test
temperature.
6.2
Report
the
rupture
pressure
and
the
bulge
height
at
rup¬
ture
for
each
test
specimen
at
each
test
temperature.
6.3
Discard
test
specimens
with
obvious
defects
and/or
evi¬
dence
of
plating
artifacts
(before
or
after
the
rupture
test).
ASTM D 618
ASTM D 882
ASTM D 1005
ASTM D 2370
The Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
Material in this Test Methods Manual was voluntarily established by Technical Committees of the IPC. This material is advisory only
and its use or adaptation is entirely voluntary. IPC disclaims all liability of any kind as to the use, application, or adaptation of this
material. Users are also wholly responsible for protecting themselves against all claims or liabilities for patent infringement.
Equipment referenced is for the convenience of the user and does not imply endorsement by the IPC.
Page 1 of 3
IPC-TM-650
TEST
METHODS
MANUAL
1
.0
Scope
This
test
method
establishes
a
procedure
for
determining
the
tensile
strength,
elongation
and
Young's
modulus
of
organic
free
films.
2
.0
Applicable
Documents
Standard
Practice
for
Conditioning
Plastics
and
Electrical
Insulating
Materials
for
Testing
Standard
Test
Methods
for
Tensile
Properties
of
Thin
Plastic
Sheeting
Standard
Test
Methods
for
Measurement
of
Dry-Film
Thickness
of
Organic
Coatings
Using
Micrometers
Standard
Test
Method
for
Tensile
Properties
of
Organic
Coatings
3
.0
Test
Specimen
The
test
specimen
shall
consist
of
a
strip
12.70
mm
wide
by
76.20
mm
in
length
and
at
least
10
jim
in
thickness.
The
width
of
the
specimen
should
not
devi¬
ate
by
more
than
2%
over
the
length
of
the
specimen
between
the
grips.
The
thickness
of
the
films
shall
not
vary
by
more
than
10%
over
the
entire
film.
A
minimum
of
ten
speci¬
mens
are
required.
4
.0
Apparatus
or
Material
4.1
Thickness
Measurement
Device
Mitutoyo
519-605
Mini-Checker
with
a
519-891
probe
with
vacuum
assist
con¬
nected
to
a
MUX-
10
multiplexer
or
equivalent
thickness
mea¬
surement
device
accurate
and
precise
to
0.1
jim.
4.2
Width
Measurement
Device
Micrometer
or
equivalent
width
measurement
device
capable
of
measuring
to
0.25
mm.
4.3
Specimen
Cutter
Thwing-Albert
J
DC
Precision
Cutter
or
equivalent.
The
specimen
cutting
device
must
be
capable
of
cutting
a
film
strip
1
2.70
±
0.25
mm
wide
over
the
length
of
the
specimen.
It
is
imperative
that
the
cutting
edges
be
kept
sharp
and
free
from
visible
scratches
or
nicks.
The
use
of
striking
dies
is
not
recommended
because
of
poor
and
incon¬
sistent
specimen
edges.
4.4
Tensile
Tester
Instron
Model
4501
Tensile
Tester
with
a
0.2
kN
load
cell
or
equivalent.
The
testing
machine
must
be
Number
2.4.18.3
Subject
Tensile
Strength,
Elongation,
and
Modulus
Date
7/95
Revision
Originating
Task
Group
Deposited
Dielectric
Task
Group
(C-13a)
equipped
with
a
load
cell
whose
compliance
is
a
maximum
of
2%
of
the
specimen
extension
within
the
range
being
mea¬
sured.
Digital
(as
opposed
to
analog)
self-calibrating
load
cells
are
preferred
since
they
eliminate
the
need
for
and
potential
error
associated
with
calibrating
analog
load
cells
using
exter¬
nal
weights.
The
testing
machine
must
be
equipped
with
a
device
for
recording
the
tensile
load
and
the
amount
of
sepa¬
ration
of
the
grips;
both
of
these
measuring
systems
should
be
accurate
to
±
2%.
The
rate
of
separation
of
the
grips
shall
be
accurate
to
±
0.1%
and
capable
of
adjustment
from
approximately
0
to
50
mm/min.
4.5
Gripping
Devices
A
gripping
system
that
minimizes
both
slippage
and
uneven
stress
distribution
must
be
used.
The
grips
must
be
self-aligning,
i.e.
they
must
be
attached
in
such
a
manner
that
they
will
move
freely
into
alignment
as
soon
as
any
load
is
applied
so
that
the
long
axis
of
the
speci¬
men
will
coincide
with
the
direction
of
the
applied
pull
through
the
center
line
of
the
grip
assembly.
4.6
Grip
Faces
Specimen
slippage
and
necking
of
the
specimen
up
into
the
grips
are
two
of
the
most
common
problems
with
this
test
method.
Slippage
can
be
checked
by
drawing
a
series
of
parallel
lines
across
the
part
of
the
speci¬
men
in
the
grips.
After
pulling
the
specimen,
if
the
lines
are
not
parallel,
the
specimen
may
be
slipping
on
one
side.
On
speci¬
mens
with
high
elongations,
necking
of
the
specimen
into
the
grips
is
a
problem.
As
the
specimen
elongates,
the
reduction
of
area
(necking)
results
in
a
loosening
of
the
specimen
at
the
inside
edges
of
the
grips.
This
loosening
propagates
further
back
into
the
grips
with
continued
elongation
of
the
specimen.
This
can
lead
to
erroneous
results
for
the
elongation.
Air¬
actuated
grips
lined
with
rubber
faces
(e.g.,
neoprene)
that
have
been
machined
flat
were
found
to
be
effective
against
both
of
these
problems
and
still
allowed
the
specimen
to
be
easily
removed
from
the
grips
after
the
test.
Another
approach
is
to
use
line
grips,
i.e.
grips
having
faces
designed
to
concen¬
trate
the
entire
gripping
force
along
a
single
line
the
width
of
the
specimen
perpendicular
to
the
direction
of
the
testing
stress.
This
is
usually
done
by
combining
one
standard
flat
grip
face
and
an
opposing
grip
face
that
has
been
cut
down.
In
cases
where
specimens
frequently
fail
at
the
edge
of
the
grips,
it
may
be
advantageous
to
round
the
edges
of
the
grip
faces
where
they
meet
the
test
area
of
the
specimen.