SMA 50 Ohm
Rear Mount Bulkhead Plug -
Antenna Connector
INCHES (MILLIMETERS)
CUSTOMER DRAWINGS AVAILABLE UPON REQUEST
CABLE TYPE
RG-178/U, .047 Semi-Rigid
* With Nickel mounting nut.
VSWR & FREQ. RANGE
VSWR: N/A 0-4 GHz
GOLD PLATED*
142-0801-421*
Mates with SMA Jack Antenna Interface.
Mounting Hole Layout
FLEXIBLE CABLE
RG-178, RG-196
SEMI-RIGID
CABLE DIA.
.047 (1.19)
1. Identify connector parts. (2 piece parts)
2. Strip cable to dimensions shown. Do not nick
center conductor or braid on flexible cable.
3.
Flexible Cable Attachment:
Twist stranded
center conductor into tight bundle and tin (op-
tional). Slide cable into body, making sure cable
insulation bottoms on center contact and braid
fits inside stem. Solder center conductor to con-
tact through the side access ports. Use a mini-
mum amount of solder for a good joint.
.020
(0.51) diameter solder is recommended.
Sol-
der braid to body. Use a minimum amount of
solder to completely join the braid to the body.
Semi-Rigid Cable Attachments:
Slide cable
into body making certain cable insulation bot-
toms on center contact. Solder center conduc-
tor to contact through the side access ports. Use
a minimum amount of solder for a good joint.
.020 (0.51) diameter solder is recommended.
Solder body to cable jacket. Use a minimum
amount of heat to minimize cable insulation
movement.
Emerson Network Power Connectivity Solutions
299 Johnson Avenue SW, Waseca, MN 56093 • 800 -247- 8256 • +1 (507) 833-8822 • www.EmersonConnectivity.com
SMA - 50 Ohm Connectors
Specifications
INCHES (MILLIMETERS)
CUSTOMER DRAWINGS AVAILABLE UPON REQUEST
ELECTRICAL RATINGS
Impedance:
50 ohms
Frequency Range:
Dummy loads .......................................................................... 0-2 GHz
Flexible cable connectors ................................................... 0-12.4 GHz
Uncabled receptacles, RA semi-rigid and adapters ........... 0-18.0 GHz
Straight semi-rigid cable connectors and
field replaceable connectors ............................................... 0-26.5 GHz
VSWR:
(f = GHz)
Straight
Right Angle
Cabled Connectors Cabled Connectors
RG-178 cable .............................. 1.20 + .025f
1.20 + .03f
RG-316, LMR-100 cable .............. 1.15 + .02f
1.15 + .03f
RG-58, LMR-195 cable ................ 1.15 + .01f
1.15 + .02f
RG-142 cable ............................... 1.15 + .01f
1.15 + .02f
LMR-200, LMR-240 cable ............ 1.10 + .03f
1.10 + .06f
.086 semi-rigid ............................ 1.07 + .008f
1.18 + .015f
.141 semi-rigid (w/contact) .......... 1.05 + .008f
1.15 + .015f
.141 semi-rigid (w/o contact) ...... 1.035 + .005f
Jack-bulkhead jack adapter and plug-plug adapter ................. 1.05 + .01f
Jack-jack adapter and plug-jack adapter ............................... 1.05 + .005f
Uncabled receptacles, dummy loads .................................................. N/A
Field replaceable (see
page 59) .........................................................
N/A
Working Voltage:
(Vrms maximum)
Connectors for Cable Type
Sea Level 70K Feet
RG-178 ...................................................................... 170
45
RG-316; LMR-100, 195, 200 ..................................... 250
65
RG-58, RG-142, LMR-240, .086 semi-rigid,
uncabled receptacles, .141 semi-rigid w/o contact ... 335
85
.141 semi-rigid with contact and adapters ................. 500
125
Dummy loads ................................................................................. N/A
Dielectric Withstanding Voltage:
(VRMS minimum at sea level)
Connectors for RG-178 ................................................................... 500
Connectors for RG-316; LMR-100, 195, 200 .................................. 750
Connectors for RG-58, RG-142, LMR-240, .086 semi-rigid,
field replaceable, uncabled receptacles ...................................... 1000
Connectors for .141 semi-rigid with contact and adapters ............ 1500
Connectors for .141 semi-rigid w/o contact, dummy loads .............. N/A
Corona Level:
(Volts minimum at 70,000 feet)
Connectors for RG-178 ................................................................... 125
Connectors for RG-316; LMR-100, 195, 200 .................................. 190
Connectors for RG-58, RG-142, LMR-240, 086 semi-rigid,
uncabled receptacles, .141 semi-rigid w/o contact .......................... 250
Connectors for .141 semi-rigid with contact and adapters .............. 375
Dummy loads ...................................................................................... N/A
Insertion Loss:
(dB maximum)
Straight flexible cable connectors
and adapters ...................... 0.06
f (GHz), tested at 6 GHz
Right angle flexible cable
connectors ......................... 0.15
f (GHz), tested at 6 GHz
Straight semi-rigid cable
connectors with contact ..... 0.03
f (GHz), tested at 10 GHz
Right angle semi-rigid cable
connectors ......................... 0.05
f (GHz), tested at 10 GHz
Straight semi-rigid cable
connectors w/o contact ...... 0.03
f (GHz), tested at 16 GHz
Straight low loss flexible
cable connectors ................ 0.06
f (GHz), tested at 1 GHz
Right Angle low loss flexible
cable connectors ................ 0.15
f (GHz), tested at 1 GHz
Uncabled receptacles, field replaceable, dummy loads ..................... N/A
Insulation Resistance:
5000 megohms minimum
Contact Resistance:
(milliohms maximum)
Initial After Environmental
Center contact (straight cabled connectors
and uncabled receptacles) ........................... 3.0*
4.0*
Center contact (right angle cabled
connectors and adapters) .............................. 4.0
6.0
Field replaceable connectors ........................ 6.0
8.0
Outer contact (all connectors) ........................... 2.0
N/A
Braid to body (gold plated connectors) ............. 0.5
N/A
Braid to body (nickel plated connectors) ........... 5.0
N/A
*N/A where the cable center conductor is used as a contact
RF Leakage:
(dB minimum, tested at 2.5 GHz)
Flexible cable connectors, adapters and .141 semi-rigid
connectors w/o contact ............................................................. -60 dB
Field replaceable w/o EMI gasket .............................................. -70 dB
.086 semi-rigid connectors and .141 semi-rigid connectors
with contact, and field replaceable with EMI Gasket ................ -90 dB
Two-way adapters ...................................................................... -90 dB
Uncabled receptacles, dummy loads .............................................. N/A
RF High Potential Withstanding Voltage:
(Vrms minimum, tested at 4
and 7 MHz)
Connectors for RG-178 ................................................................... 335
Connectors for RG-316; LMR-100, 195, 200 .................................. 500
Connectors for RG-58, RG-142, LMR-240, .086 semi-rigid,
.141 semi-rigid cable w/o contact, uncabled receptacles .............. 670
Connectors for .141 semi-rigid with contact and adapters ............ 1000
Power Rating (Dummy Load):
0.5 watt @ + 25°C, derated to 0.25 watt @
+125°C
MECHANICAL RATINGS
Engagement Design:
MIL-C-39012, Series SMA
Engagement/Disengagement Force:
2 inch-pounds maximum
Mating Torque:
7 to 10 inch-pounds
Bulkhead Mounting Nut Torque:
15 inch-pounds
Coupling Proof Torque:
15 inch-pounds minimum
Coupling Nut Retention:
60 pounds minimum
Contact Retention:
6 lbs. minimum axial force (captivated contacts)
4 inch-ounce minimum torque (uncabled receptacles)
Cable Retention:
Axial Force*(lbs) Torque (in-oz)
Connectors for RG-178 ............................ 10
N/A
Connectors for RG-316, LMR-100 ........... 20
N/A
Connectors for LMR-195, 200 .................. 30
N/A
Connectors for RG-58, LMR-240 ............. 40
N/A
Connectors for RG-142 ............................ 45
N/A
Connectors for .086 semi-rigid ................. 30
16
Connectors for .141 semi-rigid ................. 60
55
*Or cable breaking strength whichever is less.
Durability:
500 cycles minimum
100 cycles minimum for .141 semi-rigid connectors w/o contact
(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
ENVIRONMENTAL RATINGS
Shock:
MIL-STD-202, Method 213, Condition I
Vibration:
MIL-STD-202, Method 204, Condition D
Moisture Resistance:
MIL-STD-202, Method 106
†Avoid user injury due to misapplication. See safety advisory definitions inside front cover.
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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