IPC-TM-650 EN 2022 试验方法-- - 第306页

T abl e 2 Initial Stackweight (Wo, g rams) vs. C alculated Initial Thickness (ho, mils) 104 106 108 1 12 1 13 1 1 6 7628 Wo ho W o ho Wo ho Wo h o Wo ho Wo h o Wo ho 20 1.03 25 1.28 40 1.95 35 3.13 35 2.9 7 45 3.82 80 6.…

100%1 / 824
IPC-TM-650
Number
Subject Date
Revision
Page 2 of 2
2.4.22.1
Bow
and
Twist
—
Laminate
5/93
C
5.3
Calculation
of
Results
5.3.1
Average
Bow
and
Twist
Results
Bow
and
Twist
=
Sum
of
the
Measured
Maximum
Vertical
Displacements
in
mm
[in]
Number
of
Test
Specimens
5.3.2
Maximum
Bow
and
Twist
Results
The
maximum
vertical
displacement
in
mm
[in]
obtained
for
each
lot
of
material.
6.0
Notes
6.1
This
is
the
referee
method;
other
methods
of
measure¬
ment
are
allowable,
if
agreed
upon
between
user
and
vendor.
Table 2 Initial Stackweight (Wo, grams) vs. Calculated Initial Thickness (ho, mils)
104 106 108 112 113 116 7628
Wo ho Wo ho Wo ho Wo ho Wo ho Wo ho Wo ho
20 1.03 25 1.28 40 1.95 35 3.13 35 2.97 45 3.82 80 6.71
21 1.10 26 1.35 41 2.02 36 3.24 36 3.09 46 3.94 81 6.73
22 1.16 27 1.41 42 2.08 37 3.36 37 3.21 47 4.06 82 6.85
23 1.23 28 1.48 43 2.15 38 3.48 38 3.32 48 4.17 83 6.97
24 1.29 29 1.54 44 2.21 39 3.60 39 3.44 59 4.29 84 7.08
25 1.36 30 1.61 45 2.28 40 3.71 40 3.56 50 4.41 85 7.20
26 1.43 31 1.68 46 2.34 41 3.83 41 3.67 51 4.52 86 7.32
27 1.49 32 1.74 47 2.41 42 3.95 42 3.79 52 4.64 87 7.44
28 1.56 33 1.81 48 2.47 43 4.07 43 3.91 53 4.76 88 7.55
29 1.62 34 1.87 49 2.54 44 4.18 44 4.03 54 4.88 89 7.67
30 1.69 35 1.94 50 2.60 45 4.30 45 4.14 55 4.99 90 7.79
31 1.75 36 2.00 51 2.67 46 4.42 46 4.26 56 5.11 91 7.91
32 1.82 37 2.07 52 2.73 47 4.54 47 4.38 57 5.23 92 8.02
33 1.88 38 2.13 53 2.80 48 4.65 48 4.50 58 5.35 93 8.14
34 1.95 39 2.20 54 2.86 49 4.77 49 4.61 59 5.46 94 8.26
35 2.01 40 2.26 55 2.93 50 4.89 50 4.73 60 5.58 95 8.38
36 2.08 41 2.33 56 2.99 51 5.01 51 4.85 61 5.70 96 8.49
37 2.14 42 2.39 57 3.06 52 5.12 52 4.97 62 5.82 97 8.61
38 2.21 43 2.46 58 3.13 53 5.24 53 5.08 63 5.95 98 8.73
39 2.27 44 2.52 59 3.19 54 5.36 54 5.20 64 6.05 99 8.85
40 2.34 45 2.59 60 3.26 55 5.48 55 5.32 65 6.17 100 8.96
41 2.40 46 2.65 61 3.32 56 5.59 56 5.44 66 6.29 101 9.08
42 2.47 47 2.72 62 3.39 57 5.71 57 5.55 67 6.40 102 9.20
43 2.53 58 2.78 63 3.45 58 5.83 58 5.67 68 6.52 103 9.32
44 2.60 59 2.85 64 3.52 59 5.95 59 5.79 69 6.64 104 9.43
45 2.66 50 2.91 65 3.58 60 6.06 60 5.91 70 6.76 105 9.55
Wo = grams, ho = mils; (n) for 104, 106, 108 = 18; (n) for 112, 113, 116 7628 = 10
Reference Documents
1. Journal of Elastomers and Plastics, 10,367 (1978), C.J. Bartlett
2. Journal of Elastomers and Plastics, 10,365 (1978) D.P. Bloechle
3. IPC-TP-281, The Use of Scaled Flow Testing for B-Stage Prepreg, C.J. Bartlett, D.P. Bloechle, W.A. Mazeika
4. IPC-TP-418, Application of Scaled Flow Testing as an Incoming Inspection Criteria, H.J. Brown
5. IPC-TP-420, Scaled Flow for Testing CRC Prepreg, J. Del, P. Marx, J. Sallo
6. D.P. Bloechle, ‘‘Epoxy Prepreg Characterization using Scaled Flow Testing Techniques,’’ Circuit World, 9,1 (1982), p.8
IPC-TM-650
Number
Subject Date
Revision
Page 3 of 3
2.4.38
Prepreg
Scaled
Flow
Testing
6/91
A
IPC-TR-483
Figure 1 All dimensions are in inches. Four
measurements are required as indicated. Locate
measuring points approximately 12.7mm [0.500 in] from
each edge in the fill direction, and 25.4 mm [1.00 in] from
each edge in the warp direction.
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
procedure
defines
a
test
method
used
to
determine
dimensional
stability
of
glass
reinforced,
copper-
clad,
thin
laminates
intended
for
use
in
rigid
multilayer
printed
boards.
The
test
is
appropriate
for
checking
material
consistency.
It
is
not
intended
for
defining
suitability
of
the
raw
material
to
be
used
in
a
specific
printed
board
product
or
process.
2
.0
Applicable
Documents
1(Dimensional
Stability
Testing
of
Thin
Lami¬
nates'
'
3
.0
Test
Specimen
The
specimen
shall
be
300
mm
x
280
mm
[12
in
x
11
in]
in
size
with
the
warp
direction
in
the
300
mm
dimension.
A
minimum
of
three
specimens
is
required
per
inspection
lot.
When
evaluating
laminate
sheets,
specimens
should
be
taken
from
opposite
diagonal
corners
and
from
the
center
of
the
sheet.
For
precut
panels
three
randomly
selected
panels
shall
be
used
to
obtain
the
test
specimens.
4
.0
Apparatus
4.1
The
measurement
apparatus
shall
be
capable
of
mea¬
suring
the
specimen
within
an
accuracy
of
0.01
25
mm
[0.0005
in],
over
250
mm
[10.0
in]
dimension.
(Supergauge,
or
equivalent,
may
be
used.)
4.2
Ovens
used
for
baking
must
be
of
the
air
circulating
type
and
capable
of
±
2
℃
control.
The
recovery
time
of
the
tem¬
perature
must
be
less
than
15
minutes
after
specimens
are
placed
in
the
oven.
4.3
A
stabilization
chamber
(drying
cabinet)
containing
cal¬
cium
chloride
or
silica
gel
capable
of
maintaining
less
than
20
RH
at
21
±
2
℃.
5
.0
Test
Procedure
5.1
Preparation
of
the
Specimen
5.1.1
Mark
the
specimen
for
traceability
in
the
identification
area
(see
Figure
1).
No
mechanical
or
chemical
pre-cleaning
is
permitted
on
the
specimen.
Number
2.4.39
Subject
Dimensional
Stability,
Glass
Reinforced
Thin
Laminates
Date
Revision
2/86
A
Originating
Task
Group
N/A
FILL
11"
Fl
J
W
F2
t—
0.500"
IPC-2439-a
w
2
IDENTIFICATION
AREA
-
1.000"
5.1.2
Prepare
the
four
location
points
(see
Figure
1)
by
drill¬
ing
or
scribing.
5.1.3
Measure
distances
Fl,
F2,
W1,
and
W2
utilizing
the
apparatus
defined
in
paragraph
4.1
.
Define
distances
to
the
nearest
2.5
microns
[0.0001
in];
the
last
digit
of
the
reading
may
be
estimated.
Record
all
values
as
initial
measurements.
5.
1.3.1
If
optical
measurement
must
be
used,
a
rigid
plate
shall
maintain
the
test
specimen
in
a
flat
and
horizontal
posi¬
tion.
5.1.4
Place
a
12
mm
[0.5
in]
diameter
tape
dot
over
holes
or
scribe
marks
on
side
of
laminate
to
be
measured
and
a
piece
of
25
mm
x
1
2
mm
[1
.0
in
x
0.5
in]
wide
tape
over
iden¬
tifying
information.