MIL-C-24308 D Subminiature
D
*
H
D*H hermetically sealed connectors are designed
to meet environmental conditions of extreme
pressure differential. These connectors are part
of the ITT Cannon D Subminiature series and are
qualified to MIL-C-24308 (refer to page 41 for
cross reference information). The hermetic seal
prevents leakage and subsequent accumulation
of corrosive moisture behind the connector.
There are five basic shell sizes in both standard
and thru-bulkhead designs which can accommo-
date from nine to 50 contacts. Polarization is
achieved by the keystone shape of the shell, a
feature of all connectors within the D Subminia-
ture series.
How to Order
D*H
SERIES PREFIX
SHELL SIZE
CLASS
CONTACT ARRANGEMENT
CONTACT TYPE
FLANGE TYPE
MOUNTING
CONTACT TERMINATION
CONTACT TYPE
P — Pin only
FLANGE TYPE
0 — Solid flange, no mounting or locking
facilities
1 — Two .120 dia. mounting holes
2 — Two jackposts accepting
No. 4-40 screws
MOUNTING
0 — Standard
4 — Shell brazed to plate; can be front or
rear panel mounted
CONTACT TERMINATION
1 — Eyelet
2 — Solder pot
Printed circuit contacts — Consult factory
D
E
H
9
P
0
0
1
SERIES PREFIX
ITT Cannon prefix
SHELL SIZE
E, A, B, C, D
CLASS
H — Hermetic
CONTACT ARRANGEMENT
See page 41.
J
Hermetic Connectors
D*TBH
SERIES PREFIX
SHELL SIZE
SHELL STYLE
SERIES PREFIX
ITT Cannon prefix
SHELL SIZE
E, A, B, C, D
SHELL STYLE
TB – Thru-bulkhead
CLASS
CONTACT ARRANGEMENT
CONTACT TYPE
FLANGE TYPE
CLASS
H — Hermetic
CONTACT ARRANGEMENT
See page J-48.
CONTACT TYPE
P — Pin only
D
E
TB
H
9
P
0
FLANGE TYPE
00 — Solid flange, no mounting or locking
facilities
10 — Two .120 (3.05) dia. mounting holes
20 — Two jackposts accepting #4-40 screws
on layout identification side
30 — Two jackposts on both sides
(D*TBH only)
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
J-45
MIL-C-24308 D Subminiature
D
*
H
Materials and Finishes
Shell —
Insulator —
Contacts —
In accordance with ASTM 620, 619, 568 —
Compression glass
In accordance with ASTM A108 —
Steel, plated with gold over nickel
Low carbon steel, plated with electro-deposited tin
over cadmium over copper flash
Military vs. ITT Cannon Current Ratings
The ITT Cannon rating for #20 contacts is 5
amps, which means 5 amps for all contacts simul-
taneously. MIL-W-5088 rates #20 contacts at 7.5
amps maximum. The explanation is as follows:
MIL-W-5088B, Paragraph 3.9.2.1.2 specifies:
“Table 1 current ratings for cables in bundles are
based upon 15 or more cables carrying no more
than 20% of the total carrying capacity of the
bundle.”
Table 1 specifies a current rating of 7.5 amps
maximum for single wires in bundles of 15 or
more wires. NOTE: Wires and contacts are both
considered to be in the category of conductors.
Explanation
If 15 wires (normally rated at 7.5 amps per wire
maximum, or at least a total bundle current of
112.5 amps) are not to carry more than 20% of
the total 112.5 amps, the average current rating
per wire is 20% of 112.5 amps (total bundle ca-
pacity) divided by 15 (number of wires).
Conclusion
The Military rating of #20 contacts or wires is 1.5
amps average (based on 15 wires per bundle or
15 contacts per plug) vs an ITT Cannon rating of
5 amps.
Average Maximum Temperature vs Connector Size
for various current ratings of mated pairs of D
Subminiature connectors
7.5 AMP CONFINED
300
TEMPERATURE (F°)
250
200
150
100
150
E
5 AMP FREE AIR
7.5 AMP FREE AIR
5 AMP CONFINED
A
B
C
CONNECTOR SIZE
D
J
Hermetic Connectors
Notes:
1. Free air condition. Connectors not shielded from ambient
condition in any manner.
2. Confined condition. Connectors placed in insulated box (1 x 2
x 3.5) during test, with no moving air.
3. Average maximum temperature stabilization: 1 hour or less in
all cases.
4. All contacts in each mated pair tested were wired in series with
specified current flowing.
5. Ambient conditions 77°F, 50% rh.
Test Data
All voltages are measured from contact to shell,
in unmated condition.
Voltage Rating (ac)
Sea Level
Test (Max.)
750
Altitude (feet)
20,000
50,000
625
225
70,000
175
Insulation Resistance.....5,000 megohms min. when tested
per MIL-STD-202A, Method 302
Contact Voltage Drop ....6.67 millivolts per amp max. when
mated with any Original D or
GOLDEN-D connector receptacle
Air Leakage Rate ...........1 micron cubic ft/hour max. (1.04 x
10
-5
cc/sec.) at 1 atm pressure
differential
Vibration Resistance ......Exceeds test requirements of MIL-
Ref. MIL-C-24308
STD-202, Method 204, Condition B
Corrosion Resistance .....Exceeds requirements of 48 hour
Ref. MIL-C-24308
salt spray exposure, tested in
accordance with MIL-STD-202,
Method 101
Shock ............................Exceeds tests for MIL-STD-202
Ref. MIL-C-24308
Method 213
DWV..............................750 VAC rms
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
J-46
www.ittcannon.com
MIL-C-24308 D Subminiature
D
*
H
Standard
D*H
Through Bulkhead
D*TBH
J
Hermetic Connectors
F
E
D•
C
B•
A
± .010 ± .014 (0.36)
± .010
± .005
± .010
Part Number ± .010
- .005 (0.13)
(0.25)
(0.25)
(0.13)
(0.25)
(0.25)
by Shell Size
—
.498 (12.65)
1.208 (30.68) .703 (17.86) .984 (24.99) .366 (9.30)
DEH9P-*
.498 (12.65) .112 (2.84)
DETBH9P-* 1.208 (30.68) .703 (17.86) .984 (24.99) .366 (9.30)
—
.498 (12.65)
DAH15P-* 1.545 (39.24) 1.029 (26.14) 1.312 (33.32) .366 (9.30)
.498 (12.65) .112 (2.84)
DATBH15P-* 1.545 (39.24) 1.029 (26.14) 1.312 (33.32) .366 (9.30)
—
.498 (12.65)
DBH25P-* 2.093 (53.16) 1.589 (40.36) 1.852 (47.04) .384 (9.75)
.498 (12.65) .128 (3.25)
DBTBH25P-* 2.093 (53.16) 1.589 (40.36) 1.852 (47.04) .384 (9.75)
—
.498 (12.65)
DCH37P-* 2.733 (69.42) 2.237 (56.82) 2.500 (63.50) .384 (9.75)
.498 (12.65) .128 (3.25)
DCTBH37P-* 2.733 (69.42) 2.237 (56.82) 2.500 (63.50) .384 (9.75)
—
DDH50P-* 2.640 (67.06) 2.133 (54.18) 2.406 (61.11) .490 (12.45) .610 (15.49)
DDTBH50P-* 2.640 (67.06) 2.133 (54.18) 2.406 (61.11) .490 (12.45) .610 (15.49) .128 (3.25)
*Add contact termination mounting, and flange type; see part number explanation.
•Dimensions B and D are measured as outside dimensions from the start of the radius corner.
H
G
± .010
± .010
(0.25)
(0.25)
.725 (18.42) .369 (9.37)
—
—
.932 (23.67) .369 (9.37)
—
—
1.479 (35.57) .369 (9.37)
—
—
2.125 (53.98) .369 (9.37)
—
—
2.000 (50.80) .500 (12.70)
—
—
J
± .010
(0.25)
.904 (2.39)
—
.904 (2.39)
—
.103 (2.62)
—
.103 (2.62)
—
.103 (2.62)
—
K
± .008
(0.20)
—
.236 (5.99)
—
.236 (5.99)
—
.226 (5.74)
—
.226 (5.74)
—
.226 (5.74)
M
± .015
(0.38)
.334 (8.48)
—
.334 (8.48)
—
.334 (8.48)
—
.334 (8.48)
—
.334 (8.48)
—
X
Solder
.238 (6.05)
—
.238 (6.05)
—
.238 (6.05)
—
.238 (6.05)
—
.238 (6.05)
—
X
Eyelet
.161 (4.09)
—
.161 (4.09)
—
.161 (4.09)
—
.161 (4.09)
—
.161 (4.09)
—
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
www.ittcannon.com
J-47
MIL-C-24308 D Subminiature
D
*
H
Mounting Dimensions
Hermetic sealing is effective only when connec-
tors are front panel mounted, except for brazed
assemblies in which both shells are brazed to the
plate. Brazed assemblies may be used for either
front or rear panel mounting, and entire connec-
tor is subject to leak test. Consult factory for
other rear mounting applications.
D*H
D*TBH
J
Hermetic Connectors
Part Number
by Shell Size
DEH9P-*
DETBH9P-*
DAH15P-*
DATBH15P-*
DBH25P-*
DBTBH25P-*
DCH37P-*
DCTBH37P-*
DDH50P-*
DDTBH50P-*
C
± .005 (0.13)
.984 (24.99)
.984 (24.99)
1.312 (33.32)
1.312 (33.32)
1.852 (47.04)
1.852 (47.04)
2.500 (63.50)
2.500 (63.50)
2.406 (61.11)
2.406 (61.11)
P
.735 (18.67)
—
.942 (23.93)
—
1.489 (37.82)
—
2.135 (54.23)
—
2.010 (51.05)
—
S
.379 (9.63)
—
.379 (9.63)
—
.379 (9.63)
—
.379 (9.63)
—
.510 (12.95)
—
U
Min.
.794 (20.17)
.794 (20.17)
1.120 (28.45)
1.120 (28.45)
1.682 (42.72)
1.682 (42.72)
2.330 (59.18)
2.330 (59.18)
2.226 (56.54)
2.226 (56.54)
V
Min.
.457 (11.61)
.457 (11.61)
.457 (11.61)
.457 (11.61)
.477 (12.12)
.477 (12.12)
.477 (12.12)
.477 (12.12)
.583 (14.81)
.583 (14.81)
Approx.
Weight
9g
23g
25g
Cross Reference Chart
Military Part No.
M24308/9-1
M24308/9-2
M24308/9-3
M24308/9-4
M24308/9-5
M24308/9-6
M24308/9-7
ITT Cannon Part No.
DEH9P002
DAH15P002
DBH25P002
DCH37P002
DDH509002
DEH9P001
DAH15P001
Military Part No.
M24308/9-8
M24308/9-9
M24308/9-10
M24308/9-11
M24308/9-12
M24308/9-13
M24308/9-14
ITT Cannon Part No.
DBH25P001
DCH37P001
DDH50P001
DEH9P202
DAH15P202
DBH25P202
DCH37P202
Military Part No.
M24308/9-15
M24308/9-16
M24308/9-17
M24308/9-18
M24308/9-19
M24308/9-20
ITT Cannon Part No.
DDH50P202
DEH9P201
DAH15P201
DBH25P201
DCH37P201
DDH50P201
Contact Arrangements
Face View
Pin Insert
Shell Size
No. of Contacts
Contact Size
E
9
#20
A
15
#20
B
25
#25
Shell Size
No. of Contacts
Contact Size
C
37
#20
D
50
#20
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
J-48
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