IPC-TM-650 EN 2022 试验方法.pdf - 第94页
1.0 Scope This test method is designed to determine the maximum (average) solder particle size in a solder paste using a fineness of grind gauge. 2.0 Applicable Documents ASTM D-1210-79 Fineness of Dispersion of Pigment-…
middle
button on the mouse swaps between ‘moving’ and
‘growing’ the rectangle. When the rectangle is set, press the
right hand button on the mouse to proceed.
5.3.5
On
the keyboard that now comes up on the screen,
select the number of samples being processed.
5.3.6
On
the next keyboard select the number of particles to
be measured (200 for type 1-4 and 400 for type 5-6 is sug-
gested).
5.3
Evaluation
Express
the masses of the powder above,
within, and below the nominal size range as percentages of
the mass of the original sample. Enter data in Table 1.
T
able 1
T
ype 1 +150µm
+75
µm
+20
µm
–20
µm
T
ype 2 + 75 µm
+45
µm
+20
µm
–20
µm
Type 3 + 45 µm +25 µm +20 µm –20 µm
T
ype 4 + 38 µm
+20
µm
–20
µm
T
ype 5 + 30 µm
+15
µm
–15
µm
T
ype 6 + 15 µm
+5
µm
–5
µm
IPC-TM-650
Number
2.2.14.2
Subject
Solder
Powder Particle Size Distribution—Optical Image
Analyzer Method
Date
1/95
Revision
P
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电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ
1.0
Scope
This
test method is designed to determine the
maximum (average) solder particle size in a solder paste using
a fineness of grind gauge.
2.0 Applicable Documents
ASTM D-1210-79
Fineness
of Dispersion of Pigment-Vehicle
Systems
3.0
Test Specimen
At
least 100 grams of uniformly mixed
solder paste.
4.0
Equipment/Apparatus
Gauge-Hegman
Type CMA
185*, or equivalent, in accordance with ASTM D1210-79. A
hardened steel, stainless steel, or chrome-plated steel block
approximately 175 mm in length, 65 mm in width, and 13 mm
thick.
The top surface of the block shall be ground smooth and flat
and shall contain one or two grooves 140 mm in calibrated
length and 12.5 mm wide parallel to the longer sides of the
block.
Each groove shall be tapered uniformly in depth lengthwise
from a suitable depth (for example 50 to 100 micrometers) at
10 mm from one end to zero depth at the other with interme-
diate calibrations in accordance with the depth at these
points.
Scraper—A single- or double-edged hardened steel, stainless
steel, or chrome-plated steel blade 90 mm long, 38 mm wide,
and 6.4 mm thick. The edge or edges on the long sides shall
be straight and rounded to a radius of approximately 0.38
mm.
5.1
Test
5.1.1
Using
a fineness of grind gauge (Hegman) Type CMA
185 or equivalent in accordance with ASTM D-1210 deter-
mine the maximum and average particle size of the powder.
5.2
Evaluation
Acceptance
of each type of powder shall
be based on the specifications listed in Table 1. Enter the
results in Table 2 ‘‘Test Report on Solder Paste.’’
*Source:
Precision Gage & Tool Co. 28 Volkenand Ave., Dayton, Ohio
45410 513/254-8404
T
able 1
1st
4th Major
T
ype 1 160µm 150 µm 140 µm
Type 2 80µm 75 µm 65 µm
Type 3 50µm 45 µm 40 µm
Type 4 40µm 38 µm 35 µm
Type 5 30µm 25 µm 23 µm
Type 6 20µm 15 µm 15 µm
The
Institute for Interconnecting and Packaging Electronic Circuits
2215 Sanders Road • Northbrook, IL 60062
IPC-TM-650
TEST
METHODS MANUAL
Number
2.2.14.3
Subject
Determination
of Maximum Solder Powder Particle
Size
Date
1/95
Revision
Originating Task Group
Solder Paste Task Group (5-24b)
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
age1of2
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T
able 2 Test Report on Solder Paste
Enter appropriate information in top portion of report and complete report by entering the test results or checkmarks in the appropriate spaces.
Inspection Purpose: QPL I.D. Number:
__
Qualification Manufacturer’s Identification:
__ Quality Conformance A Manufacturer’s Batch Number:
__
Quality Conformance B Date of Manufacture:
__
Shelf-Life Extension Original Use-By Date:
__
Performance Revised Use-By Date:
Date
Inspection Completed:
Overall
Results: __ Pass __ Fail
Inspection Performed by:
W
itnessed by:
Inspections
User’s
Actual
Requirement Test Result P/F (*) Tested by & Date
Material
Visual
Metal Content
Viscosity
Solder Ball
Slump
Alloy
Flux
Powder Size
% In Top Screen
% In Next Screen
% In Bottom Screen
% In Receiver Bottom
Max. Powder Size
Powder Shape
Tack
Wetting
* P/F = PASS/FAIL; enter P if test results are within tolerance of actual requirement; otherwise, enter F
IPC-TM-650
Number
2.2.14.3
Subject
Determination
of Maximum Solder Powder Particle Size
Date
1/95
Revision
P
age2of2
电子技术应用 ｗｗｗ．ＣｈｉｎａＡＥＴ．ｃｏｍ