MIL-M-38510/289A
Symbol |
Inch es |
Millimeters |
Notes |
||
Min |
Max |
Min |
Max |
||
A |
.045 |
.092 |
1.14 |
2.34 |
|
b |
.015 |
.019 |
0.38 |
0.48 |
5 |
c |
.003 |
.007 |
0.08 |
0.18 |
5 |
D |
.455 |
11.56 |
3 |
||
E |
.295 |
.320 |
7.49 |
8.13 |
|
E1 |
.130 |
.150 |
3.3 |
3.81 |
|
E2 |
.030 |
0.76 |
|||
e |
.050 BSC |
1.27 BSC |
4, 6 |
||
k |
.005 |
.018 |
0.13 |
0.46 |
9 |
L |
.250 |
.370 |
6.35 |
9.40 |
|
Q |
.010 |
.040 |
0.25 |
1.02 |
2 |
S |
.045 |
1.14 |
7 |
||
S1 |
.005 |
0.13 |
|||
NOTES:
1. Index area, A notch or A pin identification mark shall be located adjacent to pin one and shall be within the shaded area shown. The manufacturer's identification shall not be used as a pin one identification mark. Alternatively, a tab (dim k) may be used to identify pin one. This tab may be located on either side as shown.
2. Dimension Q shall be measured at the point of exit of the lead from the body. Dimension Q
shall be .0085 inch (0.22 mm) minimum when lead finish A is applied.
3. This dimension allows for off center lid, meniscus and glass overrun.
4. The basic pin spacing is .050 inch (1.27 mm) between centerlines. Each pin centerline shall
be located within ± .005 inch (0.13 mm) of its exact longitudinal position relative to pins 1 and
18.
5. All leads - increase maximum limit by .003 inch (0.08 mm) measured at the center of the flat,
when lead finish A or B is applied.
6. Sixteen spaces.
7. Applies to all four corners (leads number 1, 9, 10, and 18).
8. If this configuration is used, no organic or polymeric materials shall be molded to the bottom of
the package to cover the leads.
9. Optional, see note 1. If a pin 1 identification mark is used in addition to this tab, the minimum
limit of dimension K does not apply.
FIGURE 1. Case outline X (18 lead, �" x W" flat package) - Continued.
9
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