Circular Connectors
MARC 73 Series Connectors
Service and Performance Data
MARC 73 Series Connectors meet or exceed the performance requirements of specification MIL-C-38999. Your sales rep-
resentative or field engineer can supply detailed, cross-reference information. MARC 73 Series Connectors meet the fol-
lowing selected test parameters as specified below:
DESCRIPTION
Contact Retention
TEST REQUIREMENTS
Contacts are to withstand 10 lbs [44.48 N] axial load without axial displacement
in excess of 0.012 [0.30] or damage to contacts or inserts when the axial load is
applied to the mating end of the contacts in unmated plugs and receptacles at a
rate of approximately 1 lb/sec. [4.45 N].
The potential drop across normally mated contacts shall not exceed 25 mv
under room ambient and high temperature service conditions when measured
as specified in MIL C-39029 with maximum rated current.
No evidence of dielectric breakdown or flashover when mated and unmated
plugs are subjected to 645 and 180 volts RMS, respectively, at altitudes up to
70,000 feet [21,336 m] and 1000 volts RMS at sea level.
Insulation resistance of mated plugs and receptacles shall be 5000 megohms,
minimum, at room temperature and 1000 megohms, minimum, at 257°F
[+125°C] when measured per MIL-STD 202, Method 302, Test Condition B.
Plugs and receptacles shall withstand up to 500 cycles of engagement and
separation without detrimental damage to plugs or receptacles or not satisfying
subsequent tests.
Mating and unmating forces shall not exceed 27 Ibs [120.10 N] maximum,
(15 shell size) after fully wired plugs and receptacles are immersed for 20 hours,
each, in hydraulic fluid (MIL-H-5606) and high temperature lubricating oil
(MIL-L-9236) followed by a one-hour dry.
Mated connectors shall show no circuit interruptions greater than one microsec-
ond during 12 hours vibration to include six sweeps in each axis at extreme tem-
peratures of -85°F [-65°C] and 257°F [+125°C] per MIL-STD-202, Method 204,
Test Condition D. Post inspection shall show no detrimental cracking, breaking,
or loosening of parts.
The insulation resistance of mated connectors shall exceed 1000 megohms after
subjection to moisture resistance testing per MIL-STD-202, Method 106.
The insulation resistance of wired and mated connectors shall be 5000
megohms, minimum, and there shall be no flashover or breakdown at test voltage
of 1000 volts RMS after the third cycle and while immersed in 5% salt water
solution at 68°F [20°C] and room ambient pressure at 68°F [20°C].
Unmated plugs and receptacles shall show no excessive corrosion which
would detrimentally affect the electrical and mechanical performance of the
connectors after subjection to 24 hours exposure to salt spray atmosphere per
MIL-STD-202, Method 101.
Contact Resistance
Dielectric Withstanding
Voltage, Altitude and Sea Level
Insulation Resistance,
Room and High Temp.
Coupling and Uncoupling
Fluid Immersion
Sweep Vibration, Mated
Moisture Resistance
Altitude Breathing
Salt Spray
82
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
Circular Connectors
MARC 73 Series Connectors
(Continued)
Service and Performance Data
I. Electrical
— Electrical Ratings
Contact
Size
22 AWG
1
Current Rating
(Amperes,
Max., 81°F [+27°C])
5
Dielectric
Withstanding
Voltage (RMS)
1000
Working Voltage
110,000 Ft. Alt.
1
Sea Level
750
300
Contact
Resistance
(Millivolts, Max.)
8
110,000 ft = 33,528 m
Wire Range Accommodations
Wire
Barrel
Size
Wire
Size
(AWG)
26
22 AWG
24
22
O.D. of Finished Wire
Range
Nominal
.029
Min.
0.74
—
.044
1.12 Max.
.031
Nom.
0.79
.036
Nom.
0.91
.042
1.07 Nom.
Wire Spec.
MIL-W-16878
Type “E” or “ET”
Type “ET”
Type “ET”
II. Mechanical
— Durability: 500 Cycles Mate/Unmate.
Coupling/Uncoupling Forces and Tightening Torques:
Shell
Size
9
12
15
18
Coupling/
Uncoupling
Force
(In-Lbs.) Max.
10 [44.48]
15 [66.72]
22 [97.86]
28 [124.55]
Tightening Torque (In-Lbs.)
Mounting Nut
Retaining Nut
20 [2.26 N] Max.
20 [2.26 N] Max.
20 [2.26 N] Max.
20 [2.26 N] Max.
30-45 [3.39 Nm – 5.08 Nm]
40-55 [4.52 Nm – 6.21 Nm]
55-70 [6.21 Nm – 7.91 Nm]
70-85 [7.91 Nm – 9.60 Nm]
Operating Temperature: -67°F to 257°F [-55°C to +125°C].
Connector Mated Length: 2.217 [56.31] Max.
Part Number and
Ordering Information
MARC 73 Series Connector
part numbers indicate size,
shape, insert layout, type of
seal, style of contact and
polarization.
Circular
Connectors
MD73
06
E
15
91
P
N
(***)
Modification
Designator
when applicable
Series — MD73
Single hole mntng.
receptacle
Line cord receptacle
Box mntng. receptacle
Straight plug, bayonet
quick disconnect
00
Polarizing position
N, 1, 2, 3, 4, etc. . . .
P — Pin power contact
S — Socket power contact
Insert arrangement number
Shell Size — O.D. of receptacle barrel to nearest .062 [19.05] inch
E — Environmentally sealed
01
02
06
Notes:
Pin contacts in plug; socket contacts in receptacle.
If P or S does not appear in the numbering system, no contacts will be supplied with order (order separately).
3
Contact Arrangements
1
Shell Size 9
Shell Size 12
Shell Size 15
Insert Arrangement
2
Number of Contacts
Contact Size
9-27
3
27
22 AWG
12-61
3
61
22 AWG
15-91
3
91
22 AWG
Views shown are front face views of receptacles. Front face view of plug is mirror image of that shown.
Arrow ( ) indicates insert top or vertical position in relation to top or vertical position of housing.
3
The 22 AWG contact arrangements will accommodate MIL-W-16878 Type ET, 22, 24, 26 AWG wire. Contact spacing
is on 0.065 [1.65] centers.
1
2
83
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
Circular Connectors
MARC 73 Series Connectors
(Continued)
Configurations
MD73-06E
Straight Plug, Bayonet
Coupling, Environmental
and Non-Environmental
(Mates with Receptacles
02, 00 and 01)
A
Master Polarizing
Keyway
B
C
.093
Max.
[2.36]
Shell
Size
9
12
15
18
A
.813
20.65
1.000
25.40
1.125
28.58
1.594
40.49
Dimensions
B (Max.)
1.000
25.40
1.000
25.40
1.000
25.40
1.000
25.40
C (Max.)
1.288
32.72
1.288
32.72
1.288
32.72
1.288
32.72
MD73-02E
Receptacle, Box Mounting,
Environmental and Non-
Environmental (Mates with
Plug, Type 06)
Master Polarizing
Key
.110–.130
Dia.
[2.79–3.30]
4 Holes
B
Typ.
C
Hex.
A
Typ.
.052–.072
[1.32–1.83]
1.360
[34.54]
.093
Max.
[2.36]
.065–.085
[1.65–2.16]
D
Panel Cutout
.375 [9.53] Max. Panel Thickness
Shell
Size
9
12
15
18
Dimensions
C
.562
14.27
.75
19.05
.875
22.23
1.125
28.58
A
.875
22.23
1.000
25.40
1.125
28.58
1.344
34.14
B
.662
16.81
.786
19.96
.906
23.01
1.062
26.97
D
.693-.697
17.60-17.70
.881-.885
22.38-22.48
1.006-1.011
25.55-25.68
1.250-1.260
31.75-32.00
MD73-00E
Receptacle, Single Hole
Mounting, Environmental
and Non-Environmental
(Mates with Plug, Type 06)
Master Polarizing
Key
.125
[3.18]
B
Hex.
A
Hex.
F
Hex.
.093 Max.
[2.36]
D
T
Thread
C
E
Panel Cutout
Shell
Size
9
12
15
18
Dimensions
D
.669-.673
16.99-17.09
.850-.856
21.59-21.74
.975-.979
24.77-24.87
1.212-1.216
30.78-30.89
A
.813
20.65
1.000
25.40
1.125
28.58
1.625
41.28
B
.75
19.05
.937
23.80
1.062
26.97
1.375
34.93
C
1.360
34.54
1.360
34.54
1.360
34.54
1.360
34.54
E
.693-.697
17.60-17.70
.881-.885
22.38-22.48
1.006-1.010
25.55-25.65
1.251-1.255
31.78-31.88
F
.562
14.27
.75
19.05
.875
22.23
1.125
28.58
T (Class 2A)
11/16-32UN
7/8-28UN
1-28UN
1-1/4-28UN
84
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
Circular Connectors
MARC 73 Series Connectors
(Continued)
Configurations
(Continued)
MD73-01E
Receptacle, Line Cord,
Environmental (Mates with
Plug, Type 06)
B
C
Hex.
Master Polarizing
Key
A
.093
Max.
[2.36]
Shell
Size
9
12
15
18
A
1.360
34.54
1.360
34.54
1.360
34.54
1.360
34.54
Dimensions
B (Max.)
.703
17.86
.891
20.57
1.016
25.81
1.203
30.56
C
.562
14.27
.75
19.05
.875
22.23
1.125
28.58
Accessories
Cable Clamps
T
Thread
B
.225
Max.
[5.72]
.156
[3.96]
A
Circular
Connectors
Shell Size
9
12
15
18
Clamp Part No.
086-0341-00N1
086-0342-00N1
086-0343-00N1
086-0344-00N1
A
.704
17.88
.773
19.63
.829
21.06
.890
22.61
B
.750
19.05
.932
23.67
1.078
27.38
1.250
31.75
T Thd. 2A
1/2-20 UNF
11/16-24 UNEF
13/16-20 UNEF
1-28 UN
.225
Max.
[5.72]
C
.156
[3.96]
3
B
D
A
T
Thread
Shell Size
9
12
15
18
Clamp Part No.
086-0337-00N1
086-0338-00N1
086-0339-00N1
086-0340-00N1
A
.737
18.72
.913
23.19
1.048
26.62
1.225
31.12
B (Max.)
.600
15.24
.785
19.94
.962
24.43
1.185
30.10
C (Max.)
1.100
27.94
1.250
31.75
1.469
37.31
1.550
39.37
D
.879
22.33
1.067
27.10
1.233
31.32
1.550
39.37
T Thd. 2A
1/2-20 UNF
11/16-24 UNEF
13/16-20 UNEF
1-28 UN
85
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
Circular Connectors
MARC 73 Series Connectors
(Continued)
Accessories
(Continued)
Contacts
Twist pin — 22 Pins and
Sockets
Copper alloy plated .000050 [0.00127]
gold over copper flash per MIL-G-45204,
Type II
Rating
— 5 amps
Contact Resistance
— .008 ohms
max.
.415
[10.54]
.250
[6.35]
.680
[17.27]
.042
Dia.
[1.07]
.250
[6.35]
.030
Dia.
[0.76]
.034
Dia.
[0.86]
.050
Dia.
[1.27]
.035
Dia.
[0.89]
.030–.032
Dia.
[0.76–0.81]
.050
Dia.
[1.27]
Part Number 096-0526-0000
Part Number 096-0626-0001
Engineering/Separation Forces
—
6 oz. [1.67 N] max. / .502 [.139 N] min.
Durability
— 2000 cycles
Contact Cavity Sealing Plugs
.800
[20.32]
.437
[11.10]
.264
[6.71]
.035–.041
[0.89–1.04]
.264
[6.70]
.036–.044
[0.91–1.10]
Part Number 086-0331-0000
Part Number 086-0330-0000
Contact Size
22 AWG
Sealing Plug
086-0331-0000
Filler Plug
086-0330-0000
Note:
Sealing plug occupies insert and grommet cavities.
Filler plug occupies insert cavity only.
86
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
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