Resource

ca_D1-D102:Layout 1
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ca_D1-D102:Layout 1
2/10/11
11:51 AM
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MDM Micro EMI Shielded Interconnect System
with Integrated Backshell
Introduction
Today’s electronics systems in both Aerospace and Industrial applications require higher levels of signal performance. Higher signal speeds require new levels of radiation emission protection. In order to accommodate more effective shielding performance ITT-ICS introduces a
new family of EMI protective MDM series of connectors and cable assemblies. This new family of shielded connectors incorporates the highly successful ITT-ICS micro twist pin contact
system for superior electrical signal and mechanical performance. In addition, the new design
utilizes an EMI ground spring on the pin side connector as well as an integrated back shell for
shielding terminations on the back end. The ground spring is gold plated offering superior
EMI protection. The connector family is available from 9 contact positions thru 51 contact
positions and meets the performance requirements of Mil DTL 83513.
The new EMI MDM series is offered in cable assemblies which can be provided as pigtail or
end to end assemblies. These assemblies provide flexibility as to wire types and can be provided in twisted pairs. Cable types will typically include an overall shield braid that can be easily
terminated directly to the connector.
Current Rating
Dielectric Withstanding Voltage
Insulation Resistance
Low Level Contact Resistance
Operating Temperature
Shock
Vibration
Outgassing
EMI Shielding Effectiveness
3 AMP
600 VAC sea Level
150 VAC 70,000 feet
5000 megaohms maximum
32 Milliohms Maximum
-55° C to +150° C
50 g.
20 g.
Meets NASA Outgassing Requirements
Consult Factory
For additional performance requirements, please refer to Mil-DTL-85313.
Performance
Microminiature
D
The table below summarizes the results of key tests performed in accordance with MIL-STD-1344, where applicable. Data
is applicable to standard connectors with standard termination. Variations may affect this data, so please consult customer service for further information on your requirements.
The table below summarizes the results of key tests performed in accordance with MIL-STD-1344, where
applicable. Data is applicable to standard connectors with standard termination. Variations may affect this
data, so please consult customer service for further information on your requirements.
Test
Method
Dielectric Withstanding
Voltage
Method 3001:
600 VAC at sea level
150 VAC at 70,00' altitude
Method 3003
Method 1003. Condition A:
- 55˚C to +125˚C
Method 2004, Condition E:
50 G's, 3 axes, 6 millisecond
duration sawtooth pulse
Method 2005, Condition IV:
20 G's, 10-2,000 Hz. 12 hrs
Insulation Resistance
Thermal Shock
Physical Shock
Vibration
Durability
Moisture Resistance
Salt Spray
Criteria of Acceptance
No breakdown
No breakdown
5,000 megohms minimum
No physical damage
No physical damage
No loss of continuity > 1 µsec
No physical damage
No loss of continuity > 1 µsec
No mechanical or electrical defects
500 cycles of mating and
unmating, 500 CPH max.
Method 1002, Type II, omit steps 7a & 7b Insulation resistance > 100 megohms
Method 1001, Condition B:
Shall be capable of mating and unmating,
48 hours
and meet contact resistance requirements
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
D-34
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MDM Micro EMI Shielded Interconnect System
with Integrated Backshell
How to Order
Example =
MDME10 — 25
P
4
K
1
— 24
P — C
G
— XXX
Series:
MDME10 - Untwisted Wire
MDME40 - Twisted Pair Wire
Contact Arrangement:
9, 15, 21, 25, 31, 37, 51, and 100
Contact Type:
P - Pin
S - Socket
DP - Double End Cable, Pin Connectors both ends
DS - Double End Cable, Socket Connectors both ends
PS - Double End Cable, Pin and Socket
Wire Gauge (AWG):
4 - #24 Gage
6 - #26 Gage
8 - #28 Gage
0 - #30 Gage
Wire Type:
K - Teflon Wire per MIL-W-22759/11 (Not available in #30 gage)
J - Cross-Linked Tefzel Wire Per MIL-W-22759/33
Wire Color:
1 - White (MDME10 only) or White/Blue Pairs (MDME40 only)
5 - Color Coded per MIL-STD-681 (MDME10 only & #24 and #26 gage only)
White/Blue Twisted Pairs with Numbered Wire Markers (MDME40 only)
Overall Wire Length (inches):
6 inch minimum
Hardware:
M - Military Specification Hardware
P - Jackpost
K - Jackscrew - Standard Profile
L - Jackscrew - Low Profile
F - Float Mount
B - No Hardware (standard)
.091 dia. hole for sizes 9-51
.120 dia. hole for size 100
A - No Hardware
.125 dia. hole for sizes 9-51
.166 dia. hole for size 100
B1- No Hardware
.1475 dia. hole for size 100
(Per MIL-DTL-85313)
D
Ground Spring Option1:
F - No Ground Spring
G - Ground Spring Installed (Pin Connectors Only)
Shell Finish Mod Codes:
No Number / A174 (standard) - Electroless Nickel
A172 - Gold over Nickel
A101 - Cadmium/Yellow Chromate over Nickel
A141 - Irridite/Alodine
A30 - Black Anodize
1 Ground Spring cannot be used with plating codes A101, A141 and A30.
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
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D-35
Microminiature
Shield and Jacket Options:
N - No Shield, No Jacket
C - Braided Shield Installed
D - Braided Shield Installed, with E-CTFE Halar “Expanded Jacket (+150 C)
E - No Shield, with E-CTFE Halar “Expanded Jacket (+150 C)
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MDM Micro EMI Shielded Interconnect System
with Integrated Backshell
Microminiature
D
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
D-36
www.ittcannon.com