IPC-TM-650 EN 2022 试验方法-- - 第73页
ANSI NC SL Z540 The Institute for Int erconnecting and Packaging E lectronic Circuits 2215 Sanders Road • Northbrook, IL 60062 Material in this T est M ethods Manual was vol untaril y establis hed by T echni cal Committe…
1 Scope
This method describes a procedure for quantifying
the presence of voids in flexible printed board materials.
1.1 Inclusions
This test method no longer addresses inclu-
sions which are inspected using ASTM D-149.
2 Applicable Documents and Terms and Definitions
2.1 Applicable Documents
2.1.1 IPC
1
Flexible Base Dielectrics for Use in Flexible Printed
Circuitry
Cover and Bonding Material for Flexible Printed
Circuitry
Flexible Metal-Clad Dielectrics for Use in Fabrica-
tion of Flexible Printed Circuitry
2.1.2 American Society for Testing and Materials
(ASTM)
2
Standard Test Method for Dielectric Break-
down Voltage and Dielectric Strength of Solid Electrical Insu-
lating Materials at Commercial Power Frequencies
2.2 Terms and Definitions
2.2.1 Void (Bubble/Hole)
The absence of any substances
in a localized area.
3 Specimens
Each specimen: 30 cm x 30 cm [approx. 12
in x 12 in].
4 Test Equipment
4.1
A shear, paper cutter or similar cutting tool for cutting
30 cm X 30 cm [12 in X 12 in] samples.
4.2
Microscope or optical inspection device capable of up to
30X magnification.
4.3
Etching system capable of removal of metal cladding.
4.4
Chemical etchant capable of metal removal without det-
rimental effect to either the adhesive or dielectric.
4.5
Suitable light table for inspecting 30 cm x 30 cm
[approx. 12 in x 12 in] samples.
5 Procedure
5.1 Test Specimen Preparation
Three test specimens
30 cm x 30 cm [approx. 12 in x 12 in] in size are to be pre-
pared for examination/inspection. If the specimens are metal
clad, the metal foil is to be 100% removed by chemical etch-
ing, followed by rinsing and drying. If the specimens are
adhesive-coated on one or both sides, the protective cover
sheet(s) is/are to be completely removed.
5.2 Test Specimen Examination
Using the light table and
30X magnification microscope or optical inspection device,
inspect 100% of each of the three 30 cm x 30 cm [approx.
12 in x 12 in] test specimens for voids. Measure and record
the number of voids found, along with the longest dimension
of each void to the nearest 0.013 mm [500 µin], which is con-
sidered to be the size of the void.
Record the size in mm [in], quantity, and type of void found
(bubble, hole, etc.). The requirements for number and size of
the voids are defined in the appropriate materials specifica-
tions: IPC-4202, IPC-4203 or IPC-4204.
1. www.ipc.org
2. www.astm.org
3000 Lakeside Drive, Suite 309S
Bannockburn, IL 60015-1249
IPC-TM-650
TEST METHODS MANUAL
Number
2.1.13
Subject
Inspection for Voids in Flexible Printed Board
Materials
Date
05/12
Revision
B
Originating Task Group
Flexible Circuits Test Methods Subcommittee
(D-15)
Association
Connecting
Electronics
Industries
IPC-4202
IPC-4203
IPC-4204
ASTM
D-149
Material
/n
this
Test
Methods
Manual
was
voluntarily
established
by
Technical
Committees
of
I
PC.
This
material
/s
advisory
only
and
"s
use
or
adaptation
，
s
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
/s
for
the
convenience
of
the
user
and
does
not
imply
endorsement
by
IPC.
Page
1
of
1
ANSI NCSL Z540
The Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062
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 1
IPC-TM-650
TEST
METHODS
MANUAL
1
.0
Scope
This
method
is
intended
to
cover
all
mechanical
dimension
inspections
typically
referenced
on
a
Printed
Board
drawing.
This
will
cover
non-optically
enhanced
measurement
techniques
which
are
not
covered
by
IPC-TM-650,
Method
2.2.2.
2
.0
Applicable
Documents
International
Calibration
Standards
or
Physical
Constants
3
.0
Test
Specimens
The
test
specimen(s)
shall
be
defined
in
the
applicable
performance
specification
or
standard.
4
.0
Apparatus
or
Material
4.1
Mechanical
measurement
gage
capable
of
sufficient
accuracy
precision
and
resolution
to
accomplish
the
neces¬
sary
measurement
(i.e.,
calipers,
micrometers,
pin
gages,
templates,
etc.).
4.2
All
mechanical
measurement
gages
shall
be
calibrated
in
accordance
with
ANSI
NCSL
Z540,
International
Calibration
Standards
or
Physical
Constants.
Number
2.2.1
Subject
Mechanical
Dimensional
Verification
Date
8/97
Revision
A
Originating
Task
Group
Rigid
Board
T.M.
Task
Group,
7-1
Id
5
.0
Procedure
5.1
Gages
which
use
an
origin
based
system
(i.e.,
calipers,
micrometers)
shall
be
initialized
at
the
origin.
5.2
Operate
the
gage
in
a
manner
consistent
to
obtain
the
accuracy,
repeatability,
and
precision
required.
5.3
If
the
attribute
to
be
measured
can
vary
across
the
printed
board,
multiple
measurements
must
be
made
to
char¬
acterize
the
variation
within
the
sampled
area
(i.e.,
hole
sizes,
thickness).
5.4
Read
and
record
the
dimensions
for
the
attribute(s)
measured
using
the
same
number
of
significant
digits
speci¬
fied
by
the
drawing,
standard,
or
specification
as
a
minimum
or
maximum
limiting
value.
6
.0
Notes
The
following
items
can
affect
the
test
results.
Tool
wear
&
maintenance
Environment
effects
Delicacy
of
gages
-
proper
storage
Improper
calibration
IPC-OI-645
IPC-A-600E
The Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062
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 1
IPC-TM-650
TEST
METHODS
MANUAL
1
.0
Scope
This
method
is
intended
to
describe
optically
enhanced
measurement
techniques
for
dimensions
of
3
mm
or
less,
typically
referenced
on
a
Printed
Board
drawing.
This
method
will
not
cover
mechanical
dimensional
verification
which
is
covered
by
IPC-TM-650,
Method
2.2.1
.
This
method
is
intended
to
supersede
IPC-TM-650,
Method
2.2.3.
2
.0
Applicable
Documents
Standard
for
Visual
Optical
Inspection
Aids
Acceptability
of
Printed
Boards
3
.0
Test
Specimens
3.1
The
test
specimen(s)
shall
be
defined
in
the
applicable
performance
specification
or
standard.
4
.0
Apparatus
or
Material
4.1
Optical
inspection
aid
capable
of
a
magnification
where
the
feature(s)
to
be
measured
occupies
at
least
20%
of
the
field
of
view.
(See
IPC-OI-645
for
detailed
description.)
4.2
Reticle
or
Filar
Micrometer
attachment
to
Optical
Inspec¬
tion
Aid
that
contains
gradiations
or
a
scale,
which
will
provide
a
minimum
measurement
resolution
of
50%
of
the
last
signifi¬
cant
digit
of
the
referenced
dimensional
requirement.
The
Reticle
or
Filar
Micrometer
should
be
calibrated
at
the
given
magnification
to
ascertain
the
distance
in
mm
(inches)
between
each
division.
5
.0
Procedure
Number
2.2.2
Subject
Optical
Dimensional
Verification
Date
8/97
Revision
B
Originating
Task
Group
Rigid
Board
T.M.
Task
Group,
7-1
Id
5.2
Adjust
the
optical
aid
so
that
both
the
feature(s)
to
be
measured
and
the
reticle
or
filar
micrometer
attachment
are
in
focus.
5.3
Align
the
reticle
or
filar
micrometer
so
that
the
measure¬
ment
scale
is
visible
and
aligned
with
the
edges
of
the
fea-
ture(s)
to
be
measured.
5.4
Read
the
reticle
or
filar
micrometer
to
obtain
the
number
of
divisions
between
feature
edges.
5.5
To
obtain
the
actual
dimensions
of
the
feature,
multiply
the
number
of
divisions
read
by
the
calibration
data
previously
obtained
for
the
reticle
or
filar
micrometer
in
(|im/division)
(inches/division)
at
the
given
magnification.
5.6
Record
the
dimensions
for
the
attribute(s)
measured
using
the
same
number
of
significant
digits
specified
by
the
drawing,
standard,
or
specification
as
a
minimum
or
maximum
limiting
value.
6
.0
Notes
6.1
For
a
thorough
description
of
the
requirements,
defini¬
tions,
and
certification
provisions
for
optical
inspection
aids,
see
IPC-OI-645.
6.2
IPC-A-600
contains
figures
and
diagrams
which
depict
measurement
techniques
for
certain
attributed.
5.1
Select
an
optical
aid
which
allows
for
clear
viewing
of
the
area(s)
containing
the
attributes
to
be
measured.