SMC - 50 Ohm Connectors
Specifications
INCHES (MILLIMETERS)
CUSTOMER DRAWINGS AVAILABLE UPON REQUEST
Impedence:
50 ohms
Frequency Range:
0-10 GHz
VSWR:
(f = GHz)
Straight Cabled
RG-178 cable ................................... 1.25 + .04f
RG-316 and .086 semi-rigid
cable ............................................. 1.20 + .04f
Uncabled receptacles ............................ N/A
Adapters ........................................... 1.20 + .04f
ELECTRICAL RATINGS
Right Angle Cabled
1.40 + .06f
1.30 + .04f
Working Voltage:
(Vrms maximum)†
Connectors for Cable Type
Sea Level
70K Feet
RG-178 ............................................... 250
60
RG-316, .086 semi-rigid
uncabled receptacles, adapters ........ 335
85
Dielectric Withstanding Voltage:
(VRMS minimum at sea level)†
Connectors for RG-178 ........................................................................... 750
Connectors for RG-316, .086 semi-rigid
uncabled receptacles, adapters ........................................................... 1000
Corona Level:
(Volts minimum at 70,000 feet)†
Connectors for RG-178 ........................................................................... 185
Connectors for RG-316, .086 semi-rigid .................................................. 250
Uncabled receptacles and adapters ........................................................ N/A
Insertion Loss:
(dB maximum, tested at 4 GHz)
Straight cable connectors .................................................................. 0.25 dB
Right angle cable connectors ............................................................ 0.50 dB
Uncabled receptacles and adapters ........................................................ N/A
Insulation Resistance:
1000 megohms minimum
Contact Resistance:
(milliohms maximum)
After
Initial
Environmental
Center contact (straight cabled
connectors and uncabled receptacles) .............. 6.0
8.0
Center contact (right angle cabled
connectors and adapters) ................................ 12.0
16.0
Outer contact (gold plated connectors) ................. 1.0
N/A
Outer contact (nickel plated connectors) .............. 2.5
N/A
Braid to body (gold plated connectors) ................. 1.0
N/A
Braid to body (nickel plated connectors) ............... 2.5
N/A
RF Leakage:
(dB minimum tested at 2.5 GHz)
Cable connectors ............................................................................... -55 dB
Uncabled receptacles and adapters ........................................................ N/A
** All gold plated parts inlcude a .00005" min. nickel underplate barrier layer.
Avoid user injury due to misapplication. See safety advisory definitions inside front cover.
RF High Potential Withstanding Voltage:
(Vrms minimum, tested at
4 and 7 MHz)†
Connectors for RG-178 ........................................................................... 500
Connectors for RG-316 ........................................................................... 700
Uncabled receptacles and adapters ........................................................ 600
MECHANICAL RATINGS
Engagement Design:
MIL-C-39012, Series SMC
Engagement/Disengagment Force:
16 inch-ounce maximum torque
Mating Torque:
35 to 50 inch-ounce
Coupling Proof Torque:
100 inch-ounce minimum
Coupling Nut Retention:
35 pounds minimum
Contact Retention:
4 lbs. minimum axial force (captivated contacts)
1 inch-ounce minimum torque (uncabled receptacles)
Cable Retention:
Axial Force*
Torque
(pounds)
(in-oz)
Connectors for RG-178 ...................................... 10
N/A
Connectors for RG-316 ...................................... 20
N/A
Connectors for .086 semi-rigid ........................... 30
16
* or cable breaking strength whichever is less
Durability:
500 cycles minimum
ENVIRONMENTAL RATINGS
(Meets or exceed the applicable paragraph of
MIL-C-39012
Temperature Range:
- 65
°
C to + 165
°
C
Thermal Shock:
MIL-STD-202, Method 107, Condition B
Corrosion:
MIL-STD-202, Method 101, Condition B
Shock:
MIL-STD-210, Method 213, Condition C
Vibration:
MIL-STD-202, Method 204, Condition D
MATERIAL SPECIFICATIONS
Bodies:
Brass per QQ-B-626, gold plated** per MIL-G-45204 .00001" min or
nickel plated per QQ-N-290
Contacts:
Male - brass per QQ-B-626, gold plated per MIL-G-45204
.00003" min.
Female - beryllium copper per QQ-C-530, gold plated per MIL-G-45204
.00003" min.
Nut Retention Spring:
Beryllium copper per QQ-C-533, unplated
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. or nickel plated per QQ-N-290
Crimp Sleeves:
Copper per WW-T-799, gold plated per MIL-G-45204 .00001"
min. or nickel plated per QQ-N-290
Mounting Hardware:
Brass (nuts) per QQ-B-626 or phosphor bronze
(lockwashers) per QQ-B-750, gold plated per MIL-G-45204 .00001" min. or
nickel plated per QQ-N-290
MATING ENGAGEMENT FOR SMC SERIES PER MIL-C-39012
PLUG
JACK
PLUG
JACK
NOTES
1. Inside of contact to meet VSWR, mating charac-
teristics and connector durability when mated with
a dia .019/.021 (0.48/0.53) male contact.
Emerson Network Power Connectivity Solutions
299 Johnson Avenue SW, Waseca, MN 56093 • 800 -247- 8256 • +1 (507) 833-8822 • www.EmersonConnectivity.com
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