IPC-TM-650 EN 2022 试验方法.pdf - 第244页
1.0 Scope The determination of lamination bond quality by immersion in an oil stabilizing high temperature bath. 2.0 Applicable Documents None 3.0 Test Specimen Use each of the four IPC test pattern specimens H in Figure…
1
Scope
This
test method is designed to determine the
resistance of the conformal coating to cracking and crazing
when the coating is exposed to flexing.
2
Applicable Documents
IPC-CC-830
Qualification
and Performance of Electrical Insu-
lating Compound for Printed Board Assemblies
FED-STD-141 Method
2012
3
Test Specimens
3.1
Four
tin panels in accordance with FED-STD-141,
Method 2012. Electroplated tin is also acceptable.
4
Apparatus
4.1
Tin
panels coated with conformal coating according to
the coating supplier’s recommendations.
4.2
Mandrel,
0.3 cm [0.12 in] diameter
4.3
Magnifying
apparatus, capable of supplying 10X magni-
fication
5
Procedure
5.1
Place
the tin panel on a flat surface.
5.1.1
Place
the 0.3 cm [0.12 in] mandrel, in a stationary
position, in the center of the test panel.
5.1.2
Select
one end of the test panel and within one sec-
ond bend the panel 180° over the mandrel.
5.2
Evaluation
5.2.1
Following
the folding procedure, the test panel shall
then be examined with 10X magnification for cracking and
crazing.
2215
Sanders Road
Northbrook, IL 60062-6135
IPC-TM-650
TEST
METHODS MANUAL
Number
2.4.5.1
Subject
Flexibility
- Conformal Coating
Date
07/00
Revision
Originating Task Group
Conformal Coating Task Group (5-33a)
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.
P
age1of1
ASSOCIA
TION CONNECTING
ELECTRONICS INDUSTRIES
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
1.0
Scope
The
determination of lamination bond quality by
immersion in an oil stabilizing high temperature bath.
2.0
Applicable Documents
None
3.0
Test Specimen
Use
each of the four IPC test pattern
specimens H in Figures 1 through 7 shown in part 5.8.3 of this
publication. Any other sample of the production boards may
be used by mutual agreement between the vendor and the
customer.
4.0
Apparatus
4.1 Test Oil
Commercial
grade oil having a boiling and
flash point higher than 300°C (572°F).
4.2
Container
Heating
container capable of heating oil to
300° ± 10°C (572°F).
4.3
Stopwatch
4.4 Chamber
Circulating
air chamber capable of attaining
200°C (392°F).
5.0
Procedure
5.1 Preparation
5.1.1
Saw
the four coupons from specimen H. Do not cut
coupons so as to introduce any shearing, bending, or break-
ing stresses.
5.1.2 Condition
specimens by suspending in a circulating
chamber at 135° ± 15°C for one hour.
5.2
Test
5.2.1
Specimens
must be tested within two minutes after
removal from the chamber to preclude ambient moisture from
returning to specimens before flotation.
5.2.2
Remove
the specimens one at a time and float on the
surface of the hot oil bath, preset at 260° +6° –3° for 20 sec-
onds +1 –0 seconds.
5.2.3
After
removal from the hot oil and cooling, immerse
specimens in chlorethene-NU or trichlorethylene for a few
seconds, then dry with compressed air.
5.2.4
Rinse
in clean isopropyl alcohol and again blow dry
before examination.
5.3
Evaluation
Examine
each specimen for measling, blis-
tering or delamination.
The
Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
IPC-TM-650
TEST
METHODS MANUAL
Number
2.4.6
Subject
Hot
Oil
Date
4/73
Revision
Originating Task Group
N/A
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.
P
age1of1
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
1
Scope
This
method is designated for use in determining
the ease of machining of plastic materials and the effect of
such machining on the cutting tools and plastic.
2
Applicable Documents
None
3
Test Specimen
3.1
Any
rigid printed wiring material on a finished board (con-
ventional, multilayer or flush)
4
Apparatus
4.1
All
typical production machine tools normally used in the
fabrication of finished printed wiring boards
5
Procedure
5.1 Machining
The machining must be performed by a
skilled mechanic. The technique shall be as standard as pos-
sible for all materials in order that comparisons between mate-
rials may be made.
5.2
Evaluation
After
machining (i.e., drilling, sawing, and
machining in all directions), check for cracking, splitting,
delaminating, or other adverse effects. The cutting tools
should show reasonable tendency to dull, nick, or overheat.
The
Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062-6135
IPC-TM-650
TEST
METHODS MANUAL
Number
2.4.7
Subject
Machinability,
Printed Wiring Materials
Date
7/75
Revision
A
Originating Task Group
N/A
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.
P
age1of1
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ