IPC-TM-650 EN 2022 试验方法--.pdf - 第201页

Commercial Item Descrip tion (C ID) A-A-1 13 Material in this T est M ethods Manual was voluntarily establis hed by T echni cal Committees of IPC. Thi s mat erial is a dvisory only and its use or adaptation is entirely v…

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The measurement location can then be observed on the video
camera image and adjusted if necessary. The collimator area
indicated on the video image should fit entirely within the test
area of the sample specimen as seen in Figure 3. The sample
image is then focused with the autofocus feature of the instru-
ment.
A minimum of 5 measurements be made per measure-
ment location (0.060 in x 0.060 in pad). Using a polycapillary
instrument, the 5 measurements
be made at different
locations on the pad or the instrument should be used in a
scanning mode across the pad. On each side of the test
specimen on which an electroless nickel coating has been
applied, three pads
be measured. The Measurement
Report
include as a minimum:
• Instrument used
• Size of the collimator
• Measurement time
• Excitation conditions
• Individual measurement results
• Statistical measurement parameters such as mean, stan-
dard deviation and relative standard deviation
• Specification Limits as required
• Operator, time and date
6 Notes
6.1 Measurement Results:
Table 2 demonstrates the excellent standard deviation
achievable (0.4 wt.-% for 60 s measuring time) for measure-
ment of P-concentration. It should be noted that a high total
spectral intensity of more than 50,000 cps is the result of very
high flux excitation by an instrument using a polycapillary X-ray
optic emitted from a relatively small measuring spot of less
than 50 µm Ø.
In the case of standard aperture beam collimation, the total
measuring time for similar precision is expected to be a factor
of 2-3 X longer.
IPC-2344-2
CRM 1 5.20 (0.1) 0 5.29 (0.1) 0.0 (0.3)
CRM 2 7.35 (0.2) 0 7.43 (0.1) 0.1 (0.3)
CRM 3 1.2 (0.1) 8 (0.4) 1.2 (0.1) 7.7 (0.3)
CRM 6 2.89 (0.1) 10.6 (0.4) 2.88 (0.1) 10.7 (0.4)
CRM 4 6.9 (0.2) 9.0 (0.4) 6.5 (0.1) 8.9 (0.3)
CRM 5 5.90 (0.2) 11.2 (0.4) 5.7 (0.1) 11.1 (0.3)
CRM 7 11.20 (0.2) 11.3 (0.4) 11.2 (0.1) 11.4 (0.3)
Mean 0.049 µm 0.096 µm 3.2 µm 9.3
Standard
deviation
0.002 µm 0.002 µm 0.026 µm 0.413
50 nm Au/96 nm Pd/3.2 µm NiP9.3/Cu/PCB
(Small spot polycapillary instrument, measuring time 60 s)
Number
2.3.44
Subject
Determination of Thickness and Phosphorus Content in
Electroless Nickel (EN) Layers by X-Ray Fluorescence (XRF)
Spectrometry
Date
03/16
Revision
IPC-TM-650
—
Table
1
Measurement
of
Coating
Thickness
and
Phosphorus
Content:
Typical
achievable
results
for
NiP/Cu/PCB
samples
(1
mm
collimator;
measuring
time
120
s)
CRM
Specified
Values
Measured
Values
d
(pm)
%P
d
(pm)
%P
Figure
3
Positioning
of
a
1
mm
0
Collimator
on
a
1.5
mm
x
1.5
mm
[0.060
in
x
0.060
in]
ENEPIG
Pad
shall
shall
Table
2
Evaluation
of
Measurement
Repeatability
using
a
Polycapillary
XRF:
5
Readings
of
the
ENEPIG
Sample
shown
in
Figure
3.
Au
Pd
NiP
wt-%P
shall
shall
Page
4
of
4
Commercial Item Description (CID) A-A-113
Material in this Test Methods Manual was voluntarily established by Technical Committees of 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 IPC.
Page 1 of 1
r
ASSOCIATION
CONNECTING
/
ELECTRONICS
INDUSTRIES
®
221
5
Sanders
Road
Northbrook,
IL
60062-6135
IPC-TM-650
TEST
METHODS
MANUAL
1
Scope
This
test
method
uses
pressure
sensitive
tape
to
determine
the
adhesion
quality
of
platings,
marking
inks
or
paints,
and
other
materials
used
in
conjunction
with
Printed
Boards.
2
Applicable
Documents
Tape,
Pres¬
sure
Sensitive,
Adhesive.
3
Test
Specimens
Any
preproduction,
first
article,
or
pro¬
duction
printed
board.
A
minimum
of
three
tests
should
be
performed
for
each
evaluation.
4
Apparatus
or
Material
4.1
Tape
A
roll
of
pressure
sensitive
tape
3M
Brand
600
1/2
inch
wide
or
a
tape
as
described
in
(CID
AA-1
1
3),
Type
1
,
Class
B,
except
that
the
tape
may
be
clear.
The
shelf
life
of
the
tape
is
one
year.
5
Procedure
5.1
Test
Press
a
strip
of
pressure
sensitive
tape,
50
mm
[2.0
in]
minimum
in
length,
firmly
across
the
surface
of
the
test
Number
2.4.1
Subject
Adhesion,
Tape
Testing
Date
Revision
05/04
E
Originating
Task
Group
Rigid
Printed
Board
Performance
Task
Group
(D-33a)
area
removing
all
air
entrapment.
The
time
between
applica¬
tion
and
removal
of
tape
shall
be
less
than
one
minute.
Remove
the
tape
by
a
rapid
pull
force
applied
approximately
perpendicular
(right
angle)
to
the
test
area.
An
unused
strip
of
tape
must
be
used
for
each
test.
5.2
Evaluation
Visually
examine
tape
and
test
area
for
evi¬
dence
of
any
portion
of
the
material
tested
having
been
removed
from
the
specimen.
5.3
Report
The
report
should
note
any
evidence
of
material
removed
by
this
test.
6
Notes
6.1
If
plating
overhang
breaks
off
(slivers)
and
adheres
to
the
tape,
it
is
evidence
of
overhang
but
not
an
adhesion
failure.
6.2
If
foreign
material
(oil,
grease,
etc.)
is
present
on
the
test
surface
the
results
may
be
affected.
6.3
Certification
of
3M
Brand
600
1/2
inch
tape
to
CID-A-A-
1
13
is
not
required.
The
3M
Brand
600
1/2
inch
tape
is
avail¬
able
through
most
office
supply
stores.
ANSI/IPC-MF-150
ANSI/IPC-CF-152
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
Number
2.4.
1.5
Subject
Determination
of
Treatment
T
ransfer
Date
Revision
5/95
A
Originating
Task
Group
Treatment
Transfer
1
.0
SCOPE
1.1
This
procedure
describes
three
methods
to
determine
the
level
of
treatment
transfer
for
treated
copper
foil.
2
.0
APPLICABLE
DOCUMENTS
"Metal
Foil
for
Printed
Wiring
Applica¬
tions,
October
1991
,
current
revision.
4,
Composite
Foil
Specification,"
current
revision
3
.0
DEFINITION
3.1
Treatment
An
electro-mechanical
or
chemical
process
applied
to
one
or
both
sides
of
copper
foil
to
enhance
the
adhesion
of
the
foil
to
the
base
laminate.
3.2
Treatment
Transfer
Any
visible
bond
enhancement
that
has
transferred
from
the
surface
of
the
copper
foil
to
the
laminate
substrate.
4
.0
EQUIPMENT
4.1
For
the
Tape
Transfer
method
a
sample
of
the
foil
to
tested
152
mm
x
152
mm.
4.1.1
3M
Scotch
Brand
#600
Tape
19
mm
wide.
4.2
For
the
Strip
Transfer
method
a
representative
sample
of
foil,
pressed
to
four
plies
of
7628
FR-4
prepreg
to
produce
a
0.028
ml
laminate,
or
as
agreed
upon
by
user
and
supplier.
4.2.1
Etching
system
capable
of
removing
copper
foil
from
base
laminate.
4.3
For
the
Weight
and
Filter
Paper
method
a
sample
of
treated
foil
at
least
203
mm
x
51
mm.
4.3.1
#2
Filter
Paper
strips
at
least
76
mm
x
25
mm.
4.3.2
A
standardized
weight
of
250
grams
with
a
3/4
inch
surface
4.4
Visual
Acceptance
Standards
4.5
White
Background
5
.0
TEST
PROCEDURE
5.1
Tape
Transfer
Method
5.1.1
Each
copper
sample
being
tested
will
have
tape
19
mm
x
1
02
mm
applied
to
the
treatment
side
in
the
machine
direction
of
the
foil.
The
tape
should
be
firmly
applied
by
hand.
5.1.2
Remove
the
tape
by
quickly
pulling
on
one
end
at
an
acute
angle.
5.1
.3
The
tape
should
then
be
reaffixed,
adhesive
side
down
on
standard
white
paper.
5.2
Strip
Transfer
Method.
5.2.1
Image
a
line
on
the
laminate
to
a
minimum
of
1/8
inch
wide.
5.2.2
Etch,
clean
and
process
using
standard
industry
prac¬
tices
and
equipment.
If
preferred,
a
cut
or
sheared
sample
may
be
used.
5.2.3
Pull
the
strip
of
foil
back
1
inch
to
expose
the
area
directly
under
the
foil.
5.2.4
Visually
examine
this
area
by
placing
the
laminate
strip
against
a
white
background
and
comparing
the
amount
of
transfer
with
the
standard.
5.3
Weight
and
Filter
and
Paper
Method
5.3.1
Place
the
copper
foil
sample
on
a
firm,
flat
surface
with
the
treatment
side
up.
5.3.2
Place
the
#2
filter
paper
on
the
copper
foil
sample
with
the
rougher
side
of
the
paper
against
the
foil.