Microminiature D Connectors
MCDM Series Metal Shell Connectors
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].
Microminiature D
Connectors
Technical & Performance
Data
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.
1
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.
Screw Mount
A
F
Contact #1
E
.193
[4.90]
.089–.094 Dia.
[2.26–2.39] 2 Plcs.
Pin
B
.093
[2.36]
The only metal shell connector that mates with all
existing plastic types. This
line is ideal for external use
and other applications
requiring frequent disconnect 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 military applications, they are
currently used for commercial requirements, including
computers.
.379
[9.63]
Pin
Pin
D
C
A
F
Contact #1
E
.180
[4.57]
.089–.094
Dia.
[2.26–2.39]
Socket
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
