MIL-DTL-55302/176C
Recommended circuit layout
F ± .015 (0.38 mm)
Type
Type of termination
Inches
mm
.733
18.62
I
Compliant pin (wrappost)
.533
13.54
II
.250
6.35
IV
.190
4.83
VI
Solder post (see note 10)
Inches
mm
Inches
mm
Inches
mm
.001
0.03
.025
0.64
.275
6.98
,002
0.05
.050
1.27
.300
7.62
.005
0.13
.080
2.03
.375
9.52
.006
0.15
.085
2.16
.400
10.16
.008
0.20
.100
2.54
.407
10.34
.010
0.25
.120
3.05
.462
11.73
.015
0.38
.182
4.62
.485
12.32
.016
0.41
.197
5.00
.020
0.51
.210
5.33
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Unless otherwise specified, tolerance is ± .005 inch (0.13 mm) on decimals and ± 2° on angles.
4. Guide pins are purchased separately. See MIL-DTL-55302/182.
5. Location indicators embossed on surface.
6. Numbers and indicating end cavities, letters indicating row nearest to polarizing feature, and markings every ten
positions stamped on this surface.
7. Holes for solder type shall be .042 - .050 inch (1.07 1.27 mm). Holes for compliant pin shall be manufactured
as follows: .0453 ± .0010 inch (1.151 ±0.025 mm) drilled hole (1.15 mm drill) .001 - .003 inch (0.03 0.08 mm)
thick copper on wall, .0003 inch (0.008 mm) minimum tin lead plating, finished hole diameter .037 - .043 (0.94
1.09 mm) after plating, .036 - .043 inch (0.91 1.09 mm) after reflow, copper hardness (knoop) 150 maximum.
8. Chamfers shall be .015 inch (0.38 mm) minimum at a 45° angle ± 5°.
9. There shall be a minimum of two standoffs per inch of connector length for the balance of the part. Standoffs
shall not compromise the terminating area washout feature.
10. Solder post shall be a .036 (0.91 mm) maximum diameter or .036 (0.91 mm) maximum across the diagonal.
FIGURE 2. Connectors, pin assemblies .100 inch (2.54 mm) spacing with one guide,
240 through 366 contacts - Continued.
4