The Centi Line - .075" Contact Spacing
The Cannon Centi connectors are especially
suitable for commercial applications such as
computers, instrumentation, communications
and audio equipment. They are available in D
subminiature size metal shell rectangular, plas-
tic shell rectangular and strip configurations.
All Centi connectors use the reliable twist pin
contact design in a 5 amp version terminated
on .075 (1.91) and .100 (2.54) centers. The
Centi contact is crimp removable, connectors
are available for customer assembly. Standard
crimp and assembly tools are available.
The twist pin contact is recessed within the
insulator housing while the rugged cylindrical
socket is exposed. When the connector halves
are mated, the chamfered sockets guide the
pins into positive alignment. The Centipin
TM
contact, now under compression, forms a
multi-point contact with the Centisocket
TM
to
provide a high degree of reliability.
Standard Data
• Contact rating: 5 amps max, except BR
Series (2 amps max.)
• Minimum contact centers: 0.075 (1.91).
• Wire sizes: #22 thru #26 AWG, stranded or
solid.
• Contact termination: Multiple indent crimp.
• Contact retention: Crimp snap-in/removable.
• Contact materials and finish: Copper alloy,
gold- plated per ASTM B488, Type II, Code
C, Class 1.25.
• Mating/unmating force: 12 oz. per contact,
max.
Performance Data
Test
Method
Criteria of Acceptance
No breakdown
No breakdown
5,000 megohms minimum
No physical damage
No physical damage
No loss of continutiy> 1/µsec
No physical damage
No loss of continuity> 1µsec
No mechanical or electrical defects
Insulation resistance > 100 megohms
Shall be capable of mating and unmating
and meet contact resistance requirements
9 milliohms maximum
4 lb. minimum axial load
(after 10 insertion extraction cycles)
Dielectric Withstanding Method 301:
1,000 VAC at sea level
Voltage
300 VAC at 70,000' altitude
Insulation Resistance
Thermal Shock
Physical Shock
Method 302, Condition A
Method 107, Condition A
+55˚C to +85˚C
Method 213, Condition I:
100 G's, 3 axes, 6 millisecond
duration sawtooth pulse
Method 204, Condition B:
15 G's, 10-2,000 Hz, 12 hours
500 cycles of mating and
unmating, 500 CPH max.
Method 106, Omit 7a and 7b
Method 101, Condition B:
48 hours
Method 307:
At 5 amps
-
Vibration
Durability
Moisture Resistance
Salt Spray
Contact Resistance
Contact Retention
Dimensions shown in inch (mm)
Specifications and dimensions subject to change
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59
Double Density D - .075" Contact Spacing
The Double Density D is a rectangular connector in
the popular D Subminiature shell configuration
featuring double the contact density in the same
insert area. The Double Density D connector can
thus accommodate up to 100 contacts instead of 50.
This double contact density is achieved by using
field-proven, highly reliable Centipin
TM
/Centisocket
TM
contacts on .075 (1.91) centers, in the positive con-
tact alignment design. In this design contact
positions are reversed; the flexible Centipin
TM
contacts are recessed in the insulator and the more
rugged Centisocket
TM
contacts are exposed. This
reversal of positions, and the chamfered-entry of the
sockets, assures positive mating even under severe
misalignment conditions. The contacts are retained
in the monobloc insulator by a resilient internal
shoulder that snaps into a locking groove in the con-
tact. The chamfered front of the contact will not
damage the internal shoulder in the insulator.
Contacts are crimp removable type.
2D
The Double Density D connector is available in the
five popular shell and insert sizes accommodating up
to 100 contacts. These connectors mate exclusively
with other Double Density D connectors. A wide
range of accessories can be used, including junction
shells, potting cups, switching shells, guide pin
plates, and dust caps.
1. STANDARD D HARDWARE-
1
Including full range of D-Subminiature accessories
2. ONE PIECE MONOBLOCK INSULATOR-
glass-filled nylon material
2
3. CONTACT RETENTION-
thermoplastic internal shoulder snaps into a locking groove in the contact.
Retention Force: 8 lbs. min. initially, 4 lbs. min. after 10 cycles.
3
4
4. TWIST PIN CONTACTS-
seven outer wiping surfaces assure electrical continuity even under severe
shock and vibration
5. POSTIVE CONTACT ALIGNMENT-
flexible pin is recessed in insulator cavity and rugged socket is exposed
5
6. GUIDE-IN KEYS AND KEYWAYS-
assure alignment during mating and prevent scooping
6
Specifications
WEIGHT
Part Number
by shell size
2DE19P
2DE19S
2DA31P
2DA31S
2DB52P
2DB52S
2DC79P
2DC79S
2DD100P
2DD100S
Weight (in gr.)
Weight (in oz.)
Less With Contacts Less With Contacts
4.05
3.75
5.20
4.90
8.75
7.15
11.70
9.70
12.85
10.95
5.02
5.17
6.78
7.22
11.40
11.05
15.73
15.62
17.95
18.45
.142
.133
.183
.173
.308
.252
.413
.342
.453
.386
.177
.182
.239
.255
.402
.390
.555
.551
.633
.651
*Shell
MATERIALS AND FINISHES
-
Steel, cadmium plated with yellow chro-
mate supplementary coating
MECHANICAL FEATURES
Sizes
Coupling
Polarization
Contact Spacing
- Five shell sizes: E, A, B, C, and D
- Friction or jackscrew
- Keystone-shaped shells
- .075 (1.91)
Mounting Hardware - Stainless steel
and Float Mounts
Insulator
Contacts
Alternate finish,
Modification Code
- Glass-filled nylon
- Copper alloy, gold plate
- A106 Gold over brass
A156 Gold over brass
Contact Termination - Crimp snap-in
A197 Tin/Lead over steel
*Brass non-magnetic also available
How to Order
2D E
R
2D A F
RoHS COMPLIANCE
SERIES
SHELL SIZE
FLOAT MOUNTS
CONTACT ARRANGEMENT
CONTACT TYPE
TERMINATION
MODIFICATION
NOTE: Connectors may be ordered less contacts by adding the mod callout "FO" at end of number.
Contacts are then supplied in bulk form.
19
31
S
P BR * * * *
SERIES
2D - Double Density D
SHELL SIZE
E, A, B, C and D
FLOAT MOUNTS
Omit if not required
CONTACT ARRANGEMENT
19, 31, 52, 79 and 100
CONTACT TYPE*
P - Pin
S - Socket
TERMINATION
BR - 90˚ right angle PCB mounting
(For BR Series use "P" to designate jackpost)
MODIFICATION
F171 - Jackpost assembly
F172 - Standard jackscrew
F173 - Low profile jackscrew
For other modifications consult factory
Dimensions shown in inch (mm)
Specifications and dimensions subject to change
* Accommodates AWG #26 thru #22
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60
Double Density D - .075" Contact Spacing
Standard Shell
M
A
B
10˚ (TYP)
K
J
G
L
2D
+
+
D
E
+
+
H
C
V
TWO MTG. HOLES
.123 ± .005
(3.12 ± 0.13)
T
.856(21.74)MAX.
Part Number
by Shell Size
2DE19P
2DE19S
2DA31P
2DA31S
2DB52P
T
+ .020 (0.51)
- .000 (0.00)
.250 (6.35)
.250 (6.35)
.250 (6.35)
.250 (6.35)
.236 (5.99)
Part Number
by Shell Size
2DB52S
2DC79P
2DC79S
2DD100P
2DD100S
T
+ .020 (0.51)
- .000 (0.00)
.236 (5.99)
.236 (5.99)
.236 (5.99)
.236 (5.99)
.236 (5.99)
Float Mount
A
B
10˚ (TYP)
+
+
K
J
N
E
.032 (.812)
TOTAL
DIAMETRAL
FLOAT
+
G
D
+
H
M
V
C
TWO MTG. HOLES
.0885 ± .0025
(2.248 ± 0.064)
Part Number
A
B
C
D
E
G
H
J
K
L
M
N
by Shell Size± .015 (0.38) ± .010 (0.25) ± .010 (0.25) ± .010 (0.25) ±.015 (0.38) ± .010 (0.25) ± .010 (0.25) ± .010 (0.25) ± .010 (0.25) ± .010 (0.25) ± .010 (0.25) ± .010 (0.25)
2DE19P
2DE19S
2DA31P
2DA31S
2DB52P
2DB52S
2DC79P
2DC79S
1.213 (30.81)
1.213 (30.81)
.697 (17.70) .984 (24.99)
.640 (16.26) .984 (24.99)
.360 (9.14) .494 (12.55)
.308 (7.82) .494 (12.55)
.759 (19.28) .422 (10.72)
.759 (19.28) .422 (10.72)
.036 (.914)
.032 (213)
.036 (.914)
.032 (213)
.036 (.914)
.032 (213)
.036 (.914)
.032 (213)
.036 (.914)
.032 (213)
.236 (5.99)
.243 (6.17)
.236 (5.99)
.243 (6.17)
.231 (5.87)
.243 (6.17)
.231 (5.87)
.243 (6.17)
.231 (5.87)
.243 (6.17)
.055 (1.40)
.047 (1.19)
.055 (1.40)
.047 (1.19)
.055 (1.40)
.047 (1.19)
.055 (1.40)
.047 (1.19)
.055 (1.40)
.047 (1.19)
.422 (10.72)
.429 (10.90)
.422 (10.72)
.429 (10.90)
.426 (10.82)
.429 (10.90)
.426 (10.82)
.429 (10.90)
.426 (10.82)
.429 (10.90)
.120 (3.05)
.120 (3.05)
.120 (3.05)
.120 (3.05)
.129 (3.28)
.120 (3.05)
.129 (3.28)
.120 (3.05)
.129 (3.28)
.120 (3.05)
V
Max.
.555 (14.10)
.555 (14.10)
.555 (14.10)
.555 (14.10)
.555 (14.10)
.555 (14.10)
.555 (14.10)
.555 (14.10)
.555 (14.10)
.555 (14.10)
1.541 (39.14) 1.025 (26.03) 1.312 (33.32)
1.541 (39.14)
.968 (24.58) 1.312 (33.32)
.360 (9.14) .494 (12.55) 1.083 (27.51) .422 (10.72)
.308 (7.82) .494 (12.55) 1.083 (27.51) .422 (10.72)
.378 (9.60) .494 (12.55) 1.625 (41.27) .422 (10.72)
.308 (7.82) .494 (12.55) 1.625 (41.27) .422 (10.72)
.378 (9.60) .494 (12.55) 2.272 (57.71) .422 (10.72)
.308 (7.82) .494 (12.55) 2.272 (57.71) .422 (10.72)
2.088 (53.03) 1.583 (40.21) 1.852 (47.04)
2.088 (53.03) 1.508 (38.30) 1.852 (47.04)
2.729 (69.31) 2.231 (56.67) 2.500 (63.50)
2.729 (69.31) 2.156 (54.76) 2.500 (63.50)
2DD100P
2.635 (66.92) 2.127 (54.02) 2.406 (61.11) .484 (12.29) .605 (15.37) 2.178 (55.32) .534 (13.56)
2DD100S
2.635 (66.92) 2.062 (52.37) 2.406 (61.11) .420 (10.67) .605 (15.37) 2.178 (55.32) .534 (13.56)
For shell with float mounts, add letter F after shell size, e.g., 2DEF19P.
Jackscrew/Jackpost Assembly
#4-40 UNC-2A THREAD
.025 (0.64)
MAX.
.180 ± .025 Grip
(4.57 ± 0.64) Length
#4-40 UNC-2A THREAD .025 (0.64)
MAX.
.180 ± .025 Grip
(4.57 ± 0.64) Length
#4-40 UNC-2B
THREAD
.233 (5.92)
.223 (5.66)
.620 ± .010
(15.75 ± 0.25)
.230 (5.84) MAX.
.325 ± .015
(8.26 ± 0.38)
#4-40 UNC-2A THREAD
Standard (F172) Jackscrew
(factory installed)
Dimensions shown in inch (mm)
Specifications and dimensions subject to change
Low Profile (F173) Jackscrew
(factory installed)
Jackpost (F171)
Front Panel Connector Mounting Only
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61
Double Density D - .075" Contact Spacing
Contact Arrangements
All views are pin front face. Use reverse order for socket side.
1
7
14
6
13
19
1
11
22
10
21
31
1
18
36
17
35
52
2D
DE
19 Contacts
DA
31 Contacts
1
27
52
76
DB
52 Contacts
26
51
75
100
1
27
54
26
53
79
DC
79 Contacts
DD
100 Contacts
Cavity identification numbers are shown for reference only and do not appear on insulator front face. However they do appear on rear of insulator.
90˚ PCB Mounting - 3 Row
.148
(3.76)
MIN.
.0375
(0.95)
REF.
.125 (3.18)
.115 (2.92)
DIA. TYP.
.075
(.190)
REF.
2x
.253 (6.43)
.233 (5.92)
.130 (3.30)
.100 (2.54)
.690
(17.53)
MAX.
.100
(2.54)
REF.
.100
(2.54)
REF.
.510 (12.95)
.490 (12.45)
B
B
.075 (1.90)
CAV. #1
.065 (1.65)
.510 (12.95)
.480 (12.18)
#4-40
UNC-2B THREAD
(2 PLACES)
LAST CAV.
A
A
PCB Termination Leads
(all contact arrangements)
.024 (6.10) to .028 (7.11).
LAST
LEAD
Suggested finished PC hole
Size .033 (8.38) +_ .003 (0.08)
LEAD #1
Part Number
by Shell Size
2DE19SBRP
2DA31SBRP
2DB52SBRP
2DC79SBRP
A
± .015 (0.38)
1.215 (30.86)
1.540 (39.12)
2.090 (53.09)
2.730 (69.34)
B
± .010 (0.25)
.984 (24.99)
1.312 (33.32)
1.852 (47.04)
2.500 (63.50)
C
Max.
.690 (17.53)
.690 (17.53)
.690 (17.53)
.690 (17.53)
Dimensions shown in inch (mm)
Specifications and dimensions subject to change
www.ittcannon.com
62
Double Density D - .075" Contact Spacing
90˚ PCB Mounting - 4 Row
2D
.0375 (0.94) REF.
.125 (3.18)
.115 (2.92)
DIA. TYP.
.075 (1.90) REF.
.130
(3.30)
MIN.
+ + + + + + + + + +
.790
(20.07)
MAX.
+ + + + + + ++ + +
+ + + + + ++ + +
+ + + + + ++ + +
+ + + + + ++ + +
.100
(2.54)
REF.
.100
(2.54)
REF.
.200
(5.08)
REF.
+ + + + + + + + +
+ + + + + + + + +
+ + + + + + + + +
.253 (6.43)
.233 (5.92)
.510 (12.95)
.490 (12.45)
B
B
.075 (1.90)
.065 (1.65)
.620 (15.75)
.590 (14.99)
CAV #1
+
+
#4-40
UNC-2B THREAD
(2 PLACES)
CAV #100
A
A
LEAD
#100
LEAD
#1
Part Number
by Shell Size
2DD100SBRP
A
+ .015 (0.38)
_
2.635 (66.93)
B
+ .010 (0.25)
_
2.406 (61.11)
C
Max.
.790 (20.07)
Contact Arrangements - Page 62
Dimensions shown in inch (mm)
Specifications and dimensions subject to change
www.ittcannon.com
63
