Micro-D Metal Shell Low Profile 0.50” Spacing
MDLM
Our Micro-D Metal Shell Low Profile Connectors offer the flexibility and small profile that today’s
electronics systems demand. Using the dielectric footprint of Cannon’s MD Series Connector and an
aluminum shell designed to be a thinner, lower profile package, ITT Cannon engineers have developed
a connector family that meets all of the performance criteria of the Cannon MDM and MIL-DTL-83513
Connectors. The Micro-D Metal Shell Low Profile Series is available in standard cable plugs and receptacles
in contact sizes 9 through 51 positions. This family of connectors, like the original MDM series, features
Cannon Twist Pin Contact Technology on 0.050 inch spacing.
Component Materials & Finishes
Material
6061-T6 Aluminum Alloy per QQ-A-200/8
Finishes (-A174)
Insulators (9-51)
Contacts
Electroless nickel plate per SAE-AMS-C-26074, Class 4m .001-.0015 inch thick
Liquid Crystalline Polymer per MIL-M-24519, Type GLCP-30F
Gold Plate per MIL-DTL-45204 .000050 inch thick min over Copper Alloy per SAE-AMS-2418 .000010 inch thick min.
300 Series stainless steel, passivated
Hardware
Float Mount Washer
Standard Epoxy
400 Series stainless steel, passivated
Hysol EE4215/HD3561, color: black
Mechanical Features
Coupling
Friction/Jackscrews
Keystone-shaped shells
.050 (1.27)
Polarization
Contact Spacing Centers
No. of Contacts
9 thru 51 signal
Wire Size (Standard)
Contact Termination
#25 Solid Wire, #26 Standard Wire
Multiple indent crimp
Test
Method
Criteria of Acceptance
Dialectric Withstanding Voltage Method 3001: 600 VAC at sea level 150 VAC at 70,000 altitude
No breakdown No breakdown
5,000 megaohms minimum
No physical damage
Insulation Resistance
Thermal Shock
Physical Shock
Vibration
Method 3003
Method 1003, condition A: -55° C to +125° C
Method 2004, Condition E: 50 G’s, 3 axes, 6 milliseconds duration sawtooth pulse No physical damage no loss of continuity > 1 μsec
Method 2005, Condition IV: 20 G’s, 10-2,000 Hz. 12 hrs.
500 cycles of mating and unmating, 500 CPH max
Method 1002, Type II, omit steps 7a and 7b
Method 1001, Condition B: 48 Hours
No physical damage no loss of continuity > 1 μsec
No mechanical or electrical defects
Durability
Moisture Resistance
Salt Spray
Insulation resistance > 100 megaohms
Shall be capable of mating and unmating, and
meet contact resistance requirements
Contact Resistance MIL-
STD-202
Method 1001, Condition B:
at 3 amps
at 1 milliamp
8 milliohms maximum
10 milliohms maximum
Contact Retention
Per MIL-DTL-85313
5 lb. minimum axial load
Dimensions shown in mm
Specifications and dimensions subject to change
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