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MCX - 75 Ohm Connectors
Specifications
INCHES (MILLIMETERS) ? CUSTOMER DRAWINGS AVAILABLE ON REQUEST
ELECTRICAL RATINGS
Impedance: 75 Ohms
Frequency Range: 0-6 GHz
Power Rating: (Loads and matching pad only) 1.0 watt at +25 ° C derated
linearly to 0.5 watt at +125 ° C
VSWR: (f = GHz)
Straight Cabled Right Angle
MECHANICAL RATINGS
Connectors Cabled Connectors
RG-179 cable ............................... 1.13 + .04f 1.07 + .04f
In-series adapters ........................ 1.07 + .03f
Between-series adapters, loads ... 1.05 + .01f
Matching pad ............................... 1.05 + .05f
Engagement Design: Compatible with CECC 22220, Series MCX 50 Ohm
Engagement Force: 5.6 pounds maximum axial force
Disengagement Force: 8 pounds maximum axial force, 1 pound min.
Contact Retention: 2.3 pounds min. axial force (captivated contacts)
1 inch-ounce min. torque (uncabled receptacles)
Uncabled receptacles ...................................................................... N/A
Cable Retention:
Axial Force* (lbs)  Torque (in-oz)
Working Voltage: (VRMS maximum) ?
Connectors for Cable Type          Sea Level    70K Feet
RG-179 ................................................... 335 85
Uncabled receptacles, adapters ............. 335 85
Loads, matching pad .............................. N/A
Dielectric Withstanding Voltage: (VRMS minimum at sea level) ?
Connectors for RG-179 ............................................................ 1000
Uncabled receptacles, adapters ............................................... 1000
Loads, matching pad .................................................................. N/A
Corona Level: (Volts minimum at 70,000 feet) ?
Connectors for RG-179 .............................................................. 250
Uncabled receptacles, adapters ................................................. 250
Loads, matching pad .................................................................. N/A
Insertion Loss: (dB maximum, tested at 1 GHz)
Straight cable connectors ....................................................... 0.1 dB
Right angle cable connectors ................................................. 0.2 dB
Uncabled receptacles, adapters, matching pad ......................... N/A
Insulation Resistance: 10,000 megohms minimum
Connectors for RG-179 20 N/A
Connectors for RG179 DS 25 N/A
*or cable breaking strength whichever is less
Durability: ............................................................ 500 cycles minimum
ENVIRONMENTAL RATINGS
(Meets or exceeds the applicable paragraph of MIL-C-39012)
Temperature Range: All connectors: - 65 ° C to + 165 ° C
Loads and matching pads: - 65 ° C to + 125 ° C
Thermal Shock: MIL-STD-202, Method 107, Condition F
Temperature Coefficient: Loads and matching pad: +/- 300ppm/ o C
Corrosion: MIL-STD-202, Method 101, Condition B
Shock: MIL-STD-202, Method 213, Condition B
Vibration: MIL-STD-202, Method 204, Condition B
Moisture Resistance: MIL-STD-202, Method 106
MATERIAL SPECIFICATIONS
Bodies: Brass per QQ-B-626, gold plated** per MIL-G-45204 .00001"
Contact Resistance: (milliohms maximum)
After
min. Interface spring - beryllium copper per QQ-C-530, gold plated
Initial  Environmental
Center contact (straight cabled connectors,
uncabled receptacles) ....................................... 5.0 8.0
Center contact ...................................................... 10.0 15.0
(right angle cabled connectors, adapters)
Center contact (loads, matching pads) ................ N/A
Outer contact ........................................................ 1.0 1.5
Braid to body (gold plated connectors) ................. 1.0 N/A
RF Leakage: (dB typical tested at 2.5 GHz)
Cable connectors ........................................................ -55 dB typical
Uncabled receptacles, adapters, loads, matching pads ............. N/A
RF High Potential Withstanding Voltage:
(VRMS minimum, tested at 4 and 7 MHz) ?
per MIL-G-45204 .00003" min.
Contacts: Male - brass per QQ-B-626 or beryllium copper per
QQ-C-530, gold plated per MIL-G-45204 .00003" min.
Female - beryllium copper per QQ-C-530, gold plated per
MIL-G-45204 .00003" min.
Insulators: PTFE fluorocarbon per ASTM D 1710 and ASTM D 1457
Expansion Caps: Brass per QQ-B-613, gold plated per MIL-G-45204
.00001" min.
Crimp Sleeves: Copper per WW-T-799, gold plated per MIL-G-45204
.00001" min.
Mounting Hardware: Brass (nuts) per QQ-B-626 or phosphor bronze
(lockwashers) QQ-B-750, gold plated per MIL-G-45204 .00001" min.
Connectors for RG-179 .............................................................. 700
?
Avoid user injury due to misapplication.
Uncabled receptacles, adapters ................................................. 600
Loads, matching pad .................................................................. N/A
See safety advisory definitions inside front cover.
** All gold plated parts include a .00005" min. nickel underplate barrier layer.
Mating Engagement for 75 Ohm MCX Series (Intermatable with CECC 22220 50 Ohm MCX)
JACK
PLUG
NOTES
1. ID of contact to meet VSWR mating characteristics and connector durability when
mated with a dia. .019-.021 (0.48-0.53) male contact.
2. Must meet the force to engage and disengage when mated with mating part.
JACK
PLUG
3. Interface shall intermate with MCX 50 Ohm interface per CECC 22220.
Connectivity Solutions
Tel: 800-247-8256 ? Fax: 507-833-6287 ? www.EmersonNetworkPower.com/connectivity
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