MIL- STD-883F 2004 TEST METHOD STANDARD MICROCIRCUITS - 第385页

MIL-STD-883F METHOD 2024.2 15 January 1982 3 Seal area = ed - xy If t he cavit ies i n the lid and bas e are not equal , the area "XY" s hall be determi ned from the l arger of the cavit ies i n the li d or bas…

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MIL-STD-883F
METHOD 2024.2
15 January 1982
2
TABLE I. Minimum torque limits versus design seal area.
Design seal area
(cm2)
Torque
Newton meter
(N-m)
Inch-pounds force
(in-lbf)
Meter-grams force
(m-gf)
<0.22
0.221-0.32
0.321-0.47
0.471-0.65
0.651-0.85
0.851-1.08
1.081-1.41
1.411-1.73
1.731-2.05
2.051-2.50
2.501-3.00
>3.00
0.5
0.7
1.0
1.7
2.5
3.4
4.4
5.9
7.4
8.8
10.8
12.8
4
6
9
15
22
30
39
52
65
78
96
114
50
70
100
170
250
350
450
600
750
900
1100
1300
Various units are presented for the convenience of those using conventional
torque wrenches scaled in metric or English system units. All values have been
rounded off from the direct conversion values beginning with N-m and are
acceptable for use in quality conformance and qualification inspection.
1 m-gf = 0.009807 N-m
1 in-lbf = 0.1130 N-m
MIL-STD-883F
METHOD 2024.2
15 January 1982
3
Seal area = ed - xy
If the cavities in the lid and base
are not equal, the area "XY" shall be
determined from the larger of the
cavities in the lid or base.
FIGURE 2024-1. Design seal area
.
MIL-STD-883F
METHOD 2024.2
15 January 1982
4
FIGURE 2024-2. Application of torque
.