Package Outline Drawing (POD)

Hermetic Packages for Integrated Circuits
Ceramic Metal Seal Flatpack Packages (Flatpack)
K20.A MIL-STD-1835 CDFP4-F20 (F-9A, CONFIGURATION B)
20 LEAD CERAMIC METAL SEAL FLATPACK PACKAGE
A
e
A
INCHES
PIN NO. 1
ID AREA
-A-
D
-B-
S1
b
MILLIMETERS
SYMBOL
MIN
MAX
MIN
MAX
NOTES
A
0.045
0.115
1.14
2.92
-
b
0.015
0.022
0.38
0.56
-
b1
0.015
0.019
0.38
0.48
-
c
0.004
0.009
0.10
0.23
-
c1
0.004
0.006
0.10
0.15
-
D
-
0.540
-
13.72
3
E1
0.004 M
H A-B S
Q
D S
0.036 M
H A-B S
D S
C
E
-D-
A
-C-
-HE2
L
E3
SEATING AND
BASE PLANE
c1
L
E3
(c)
M
(b)
SECTION A-A
NOTES:
1. Index area: A notch or a pin one identification mark shall be located adjacent to pin one and shall be located within the shaded
area shown. The manufacturer’s identification shall not be used
as a pin one identification mark. Alternately, a tab (dimension k)
may be used to identify pin one.
2. If a pin one identification mark is used in addition to a tab, the limits of dimension k do not apply.
3. This dimension allows for off-center lid, meniscus, and glass
overrun.
4. Dimensions b1 and c1 apply to lead base metal only. Dimension
M applies to lead plating and finish thickness. The maximum limits of lead dimensions b and c or M shall be measured at the centroid of the finished lead surfaces, when solder dip or tin plate
lead finish is applied.
5. N is the maximum number of terminal positions.
6. Measure dimension S1 at all four corners.
7. For bottom-brazed lead packages, no organic or polymeric materials shall be molded to the bottom of the package to cover the
leads.
8. Dimension Q shall be measured at the point of exit (beyond the
meniscus) of the lead from the body. Dimension Q minimum
shall be reduced by 0.0015 inch (0.038mm) maximum when solder dip lead finish is applied.
9. Dimensioning and tolerancing per ANSI Y14.5M - 1982.
10. Controlling dimension: INCH.
48
0.300
6.22
7.62
-
-
0.330
-
8.38
3
E2
0.130
-
3.30
-
-
E3
0.030
-
0.76
-
7
0.38
2
k
b1
M
0.245
e
LEAD FINISH
BASE
METAL
E
E1
0.050 BSC
0.008
0.015
1.27 BSC
0.20
-
L
0.250
0.370
6.35
9.40
-
Q
0.026
0.045
0.66
1.14
8
S1
0.00
-
0.00
-
6
M
-
0.0015
-
0.04
-
N
20
20
Rev. 0 5/18/94