Microminiature D Connectors
MCDM Series Metal Shell Connectors
Microminiature D
Connectors
Technical & Performance
Data
Performance
Contact Resistance
— The average
mated contact resistance is 4 milliohms,
with a maximum value of 8 milliohms,
using standard #24 solid copper leads
when measured directly behind the
crimp joints of the mated pin and socket
contacts. The average resistance value at
100 microvolts is 4.8 milliohms.
Dielectric Withstanding Voltage
(60 Hz rms room temperature)
—
Solder Pots: 600 VAC at sea level;
150 VAC at 70,000 feet [21,336 m].
Wire Terminations: 750 VAC at sea level;
200 VAC at 70,000 feet [21,336m]
Vibration (Per MIL-STD-202C,
Method 204-A, Condition D)
— No
discontinuity in excess of 1 microsecond
during twelve 20 minute sweeps from 10
to 2,000 CPS at .06 double amplitude or
20 G forces, whichever is less.
Corrosion Resistance (Per
MIL-STD-202C, Method 101B,
Condition B)
— Both mated and
unmated samples do not exceed the
maximum allowable contact resistance
(8 milliohms) when subjected to the
48 hour salt spray test.
Durability
— The contact resistance
after 500 mating cycles is less than the
maximum allowable, 8 milliohms.
Insulation Resistance
—
Greater than 5,000 megohms at room
temperature for the materials listed
under “Materials”.
Maximum Current Carrying
Capacity
— No. 24 contact, 3
amperes. It must be recognized,
however, that all the wires to a connector
will not carry their maximum current
under all environmental conditions due
to wire temperature.
Contact Engaging and Separation
Forces
— 6 oz. [1.67N] maximum
(eng.); 0.5 oz. [.14N] minimum (sep.).
Temperature Range (Operating)
—
Diallyl phthalate -67°F to 257°F
[-55°C to +125°C].
Materials
Insulator
— Diallyl phthalate per
MIL-M-14, Type SDG-F or Liquid
Crystal Polymer (LCP) per ASTM
D5138.
Contacts
— Pin Contact: Copper alloy
and beryllium copper alloy make up the
complete construction. Socket Contact:
Copper alloy.
Body Shell
— High grade aluminum
alloy.
Finishes
Contacts
— Standard finish is
0.000050 [0.00127] gold over copper
flash per MIL-G-45204, Type II.
Body Shell
— Electroless nickel per
AMS 2404.
Note:
Insulators are molded into their metal
shells — No bonded joint is used.
1
Screw Mount
A
F
Contact #1
E
Pin
.089–.094
Dia.
[2.26–2.39]
2 Plcs.
.193
[4.90]
B
.093
[2.36]
The only metal shell con-
nector that mates with all
existing plastic types. This
line is ideal for external use
and other applications
requiring frequent discon-
nect and remating. When
durability and reliability are
paramount the metal shell
connector is unsurpassed —
it eliminates the need for
retrofitting where new metal
shell varieties must mate
with older plastic types.
Originally designed for mili-
tary applications, they are
currently used for commer-
cial requirements, including
computers.
.379
[9.63]
Pin
Pin
C
D
A
F
Contact #1
E
Socket
.089–.094
Dia.
[2.26–2.39]
.180
[4.57]
B
.093
[2.36]
.365
[9.27]
Socket
Socket
.798
[20.27]
D
25
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
Microminiature D Connectors
MCDM Series Metal Shell Connectors
(Continued)
Screw Mount
(Continued)
How To Specify
S — Solder pot for #26 max. stranded wire
X — Special, does not fit description below.
MCD- M1
Connector Series
Shell Type and Material
M1 — Metal Shell
Screw Mount
Diallyl Phthalate or LCP Insulator
B
37
P
6
A
1
18.0
Lead Length in Inches (min.)
Insulation Color or Finish
1 — All white wire
2 — All yellow wire
3 — All gray wire
4 — Gold plated
5 — Tin dipped gold plated
6 — Bare (unfinished)
7 — Color coded per MIL-STD-681,
System 1
8 — Special color code
9 — 10 color repeating (solid) per M83513
Hardware (See Pages 14 and 15)
B — No Hardware
F — Float Bushing
K — Jackscrew, Slotted Head, High Profile
L — Jackscrew, Slotted Head, Low Profile
Q — Jackscrew, Allen Head, High Profile
R — Jackscrew, Allen Head, Low Profile
X — Lockscrew, Slotted Head
Y — Lockscrew, Allen Head
P — Jackpost
Wire Type
*A — Type E, 7 strand
*B — Type ET, 7 strand
*C — Type E, 19 strand
*Per MIL-W-16878
*D — Type ET, 19 strand
F — 7 strand per MIL 22759/11
(#28 AWG only)
G — 19 strand per MIL-22759/11
#26 AWG, #24 AWG
L — Copper, solid
Q — Stranded per MIL-W-22759/33
Wire Size
4 — #24
5 — #25
6 — #26
8 — #28
0 — #30
Contact Type
P — Pin
S — Socket
Layout
9, 15, 21, 25, 30, 31, 37, 51
Part Number
MCDM1-9P***
MCDM1-9S***
MCDM1-15P***
MCDM1-15S***
MCDM1-21P***
MCDM1-21S***
MCDM1-25P***
MCDM1-25S***
MCDM1-30P***
MCDM1-30S***
MCDM1-31P***
MCDM1-31S***
MCDM1-37P***
MCDM1-37S***
MCDM1-51P***
MCDM1-51S***
A
± .005
[±.127]
.780
19.81
.780
19.81
.930
23.62
.930
23.62
1.080
27.43
1.080
27.43
1.180
29.97
1.180
29.97
.930
23.62
.930
23.62
1.330
33.78
1.330
33.78
1.480
37.59
1.480
37.59
1.430
36.32
1.430
36.32
B
± .005
[±.127]
.290
7.36
.365
9.27
.440
11.18
.515
13.08
.590
14.99
.665
16.89
.690
17.53
.765
19.43
.435
11.05
.515
13.08
.840
21.34
.915
23.24
.990
25.15
1.065
27.05
.940
23.88
1.015
25.78
C
± .010
[±.254]
.398
10.11
.398
10.11
.548
13.92
.548
13.92
.698
17.73
.698
17.73
.798
20.27
.798
20.27
.548
13.92
.548
13.92
.948
16.46
.948
16.46
1.098
27.89
1.098
27.89
1.048
26.62
1.048
26.62
D
± .010
[±.254]
.165
4.19
.165
4.19
.165
4.19
.165
4.19
.165
4.19
.165
4.19
.165
4.19
.165
4.19
.252
6.40
.252
6.40
.165
4.19
.165
4.19
.165
4.19
.165
4.19
.208
5.28
.208
5.28
E
± .005
[±.127]
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.295
7.49
.295
7.49
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.250
6.35
.250
6.35
F
± .005
[±.127]
.565
14.35
.565
14.35
.715
18.16
.715
18.16
.865
21.97
.865
21.97
.965
24.51
.965
24.51
.715
18.16
.715
18.16
1.115
28.32
1.115
28.32
1.270
32.26
1.270
32.26
1.215
30.86
1.215
30.86
Avg. Weight
lbs. ± 5%
[grams]
.003
1.36
.003
1.36
.004
1.81
.004
1.81
.005
2.26
.005
2.26
.006
2.72
.005
2.26
.007
3.17
.007
3.17
.007
3.17
.006
2.72
.007
3.17
.007
3.17
.009
4.08
.008
3.62
Note:
Weight given is with .500 [12.7] uninsulated, solid, 24 AWG gold plated copper pigtails.
26
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
Microminiature D Connectors
MCDM Series Metal Shell RF COMBOMATE Connectors
Microminiature D
Connectors
Screw Mount Coaxial
Terminations
Available
now
— RF
Performance in standard
subminiature rectangular
connectors, with VSWR
values of 1.01 to 1.10 in
frequencies ranging in DC
to 2.3 GHz. This is the
COMBOMATE Connector.
This series of connectors
incorporates the same metal
shells and twist pin contacts
used in the widely accepted,
high reliability, MCDM Series.
The RF COMBOMATE
Connector Series will
accommodate RG 196 A/U
or RG 178 B/U coaxial cable
terminated in a unique
manner in standard, already
tooled insert layouts. This
feature results in savings in
cost, time and space.
The RF COMBOMATE
Connector Series will
accommodate a maximum
of 17 RG 196 A/U or
RG 178 B/U cables in an
area of less than .225 sq.
inches [14.51 mm
2
]. Mixed
layouts with coaxial termina-
tions and standard AWG 24,
26 and 28 are also immedi-
ately available in 7 different
shell sizes. The overall
envelope and mounting
dimensions of equivalent
size of COMBOMATE
Connectors are exactly the
same as the standard
MCDM Series.
Contact #1
E
A
F
.089–.094
Dia.
[2.26–2.39]
2 Plcs.
Pin
.193
[4.90]
B
.093
[2.36]
.379
[9.63]
Pin
Pin
1
.250
Max.
[6.35]
Epoxy
C
D
A
F
Contact #1
E
Socket
.089–.094
Dia.
[2.26–2.39]
.180
[4.57]
B
.093
[2.36]
.365
[9.27]
Socket
Socket
.250
Max.
[6.35]
Epoxy
D
Performance Data —
Coaxial Terminations
Impedance
— 49.0 to 51.0 Ohms.
Voltage Standing Wave Ratio
(VSWR)
— 1.01:1 to 1.10:1 at
frequency ranging in DC to 2.3 GHz.
Dielectric Withstanding Voltage
(60 Hz rms room temperature)
—
750 VAC at sea level;
200 VAC at 70,000 feet [21,336 m].
(Actual Test Data)
1 to 2
30 MHz
60.0 db
100 MHz
49.1 db
175 MHz
42.6 db
38.0 db
500 MHz
31.6 db
1000 MHz
2000 MHz
22.4 db
3000 MHz
21.5 db
Crosstalk (Between Adjacent Lines)
2 to 3
3 to 4
59.8 db
60.7 db
48.3 db
51.7 db
41.4 db
47.2 db
38.8 db
39.5 db
32.0 db
30.0 db
22.5 db
22.3 db
23.9 db
21.4 db
4 to 5
60.0 db
50.6 db
47.0 db
40.0 db
32.5 db
20.8 db
24.2 db
Sample
30 MHz
100 MHz
175 MHz
500 MHz
1000 MHz
2000 MHz
3000 MHz
#1
.08 db
.24 db
.35 db
.58 db
1.25 db
1.48 db
2.66 db
Insertion Loss
#2
#3
.08 db
.08 db
.24 db
.25 db
.36 db
.36 db
.60 db
.50 db
1.33 db
1.36 db
1.71 db
1.42 db
2.45 db
2.74 db
#4
.08 db
.25 db
.34 db
.58 db
1.35 db
1.40 db
2.86 db
#5
.08 db
.25 db
.32 db
.48 db
1.24 db
1.45 db
2.84 db
Note:
Verification of all test data is on file at Tyco Electronics and is
available upon request.
All test runs using RG 196 A/U.
27
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
Microminiature D Connectors
MCDM Series Metal Shell RF COMBOMATE Connectors
(Continued)
Screw Mount Coaxial
Terminations
(Continued)
How To Specify
MCD
M3
7
P
3
18.0
Lead Length in Inches (min.)
Wire Size
3 — RG 196 A/U (White insulation)
2 — RG 178 B/U (Brown insulation)
X — Special, does not fit description*
Contact Type
P — Pin
S — Socket
Layout
3, 5, 7, 8, 10, 12, 17
Maximum RF combinations using RG 196 A/U and RG 178 B/U cable
Shell Type and Material
M3 — Metal Shell
Screw Mount
Diallyl Phthalate or LCP Insulator
Connector Series
*Ordering Criteria:
A wide variety of contact combinations, coaxial and power mixed, are available.
Contact Tyco Electronics for additional arrangement numbers.
Part Number
MCDM3-3P**
MCDM3-3S**
MCDM3-5P**
MCDM3-5S**
MCDM3-7P**
MCDM3-7S**
MCDM3-8P**
MCDM3-8S**
MCDM3-10P**
MCDM3-10S**
MCDM3-12P**
MCDM3-12S**
MCDM3-17P**
MCDM3-17S**
A
± .005
[± .127]
.780
19.81
.780
19.81
.930
23.62
.930
23.62
1.080
27.43
1.080
27.43
1.180
29.97
1.180
29.97
1.330
33.78
1.330
33.78
1.480
37.59
1.480
37.59
1.430
36.32
1.430
36.32
B
± .005
[± .127]
.290
7.36
.365
9.27
.440
11.18
.515
13.08
.590
14.99
.665
16.89
.690
17.53
.765
19.43
.840
21.34
.915
23.24
.990
25.15
1.065
27.05
.940
23.88
1.015
25.78
C
Max.
.408
10.36
.408
10.36
.558
14.17
.558
14.17
.708
17.98
.708
17.98
.808
20.52
.808
20.52
.958
24.33
.958
24.33
1.108
27.89
1.108
27.89
1.058
26.87
1.058
26.87
D
Max.
.200
5.08
.200
5.08
.200
5.08
.200
5.08
.200
5.08
.200
5.08
.200
5.08
.200
5.08
.200
5.08
.200
5.08
.200
5.08
.200
5.08
.245
6.22
.245
6.22
E
± .005
[± .127]
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.208
5.28
.250
6.35
.250
6.35
F
± .005
[± .127]
.565
14.35
.565
14.35
.715
18.16
.715
18.16
.865
21.97
.865
21.97
.965
24.51
.965
24.51
1.115
28.32
1.115
28.32
1.270
32.26
1.270
32.26
1.215
30.86
1.215
30.86
28
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
Microminiature D Connectors
MCDM Series Metal Shell RF COMBOMATE Connectors
(Continued)
Microminiature D
Connectors
Contact Arrangement as
Viewed from the Engaging
Face of the Pin Side
1
5
1
8
1
11
6
9
9
15
12
21
3
RG196 A/U or
RG 178 B/U
1
5
RG196 A/U or
RG 178 B/U
13
1
7
RG196 A/U or
RG 178 B/U
16
14
25
17
31
1
8
RG196 A/U or
RG 178 B/U
1
19
10
RG196 A/U or
RG 178 B/U
Center Conductor
20
37
12
RG196 A/U or
RG 178 B/U
1
18
Shield
Termination Pattern
19
35
36
51
17
RG196 A/U or
RG 178 B/U
Note:
The above contact arrangements are the maximum densities that can be obtained in each shell size when using
RG 196 A/U or RG 178 B/U cable.
29
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
