50 Ohm SMA Field Replaceable INCHES (MILLIMETERS) 4-Hole Flange Mount Jack Receptacle - CUSTOMER DRAWINGS AVAILABLE UPON REQUEST Without EMI Gasket ACCEPTS FREQUENCY GOLD NICKEL PIN SIZE RANGE PLATED PLATED .020 (0.51) 0-26.5 GHz 142-1701-531 142-1701-536 Emerson Network Power Connectivity Solutions 299 Johnson Avenue SW, Waseca, MN 56093 • 800 -247- 8256 • +1 (507) 833-8822 • www.EmersonConnectivity.com onlinecomponents.com SMA - 50 Ohm Connectors INCHES (MILLIMETERS) CUSTOMER DRAWINGS AVAILABLE UPON REQUEST Field Replaceable - Application Notes The field replaceable style of connector is known by many names in the industry, such as MIC launcher, hermetic seal launcher, spark plug launcher, etc. Some types, such as those known as “spark plugs”, have the hermetic seal incorporated into the connector. Thes e types require special welding to install and can not be replaced without destroying the hermeticity of the circuit housing. True field replaceable TM connectors, such as those manufactured by Johnson Components , are easy to install and replace. Because the hermetic seal is not incorporated into the connector design, the connector can be removed and replaced without destroying the hermetic seal or the h ermeticity of the circuit housing. All of the above mentioned connector types perform the same basic function - creating a transition from microstrip circuitry to a coaxial transmission line. Whenever possible, the hermetic seal pin diameter should be chosen as close as possible to the microstrip trace width. For optimum electrical performance, the transition from the hermetic seal to the microstrip trace must be properly compensated. Compen- sation involves adjusting the microstrip trace width to minimize any impedance discontinuities found in the transition area. TM The plot shown below is representative of the typical return loss of an Johnson Components field replaceable connector. To produce the TM data shown below, a test fixture is created using the appropriate Johnson Components hermetic seal. The fixture consists of a suitably thick spacer plate with the hermetic seal mounted flush to both surfaces. Two connectors are mounted back to back around the f ixture and the VSWR of this test assembly is measured. The return loss data shown is equivalent to the square root of the measured VSWR o f the test assembly. Since the connectors tested are of identical design, it can be stated with fair accuracy that the data shown represents the response of a single field replaceable connector and its transition to the hermetic seal. TM Although Johnson Components does not publish a VSWR specification for field replaceable connectors, typical connector VSWR can be expected to be less than 1.1 + .01f (f in GHz). A VSWR specification is not stated because an industry standard method for tes ting field replaceable connectors does not exist. The actual performance of the connector is dependent upon the application for the follo wing reasons: 1. The choice of hermetic seal to be used by the customer is not specified by the connector manufacturer. Hermetic seals produc ed by different manufacturers will not have the same electrical characteristics. For optimum electrical performance, Johnson Compo- TM nents recommends the use of our standard 142-1000-001, 002, 003 and 004 hermetic seals for pin diameters of .012 (0.30), .015 (0.38), .018 (0.46) and .020 (0.51). Custom hermetic seal configurations can be quoted. 2. It is recommended that the hermetic seal be mounted flush with the circuit housing. Tolerance variations between the hermeti c seal and machined housing do not always guarantee an optimum transition to the connector. Some manufacturers recommend an additional counterbore in the circuit housing to accommodate a solder washer during installation of the seal. Johnson Compo - TM nents does not recommend this type of installation because if the counterbore is not completely filled with solder, electrical discontinuities may be created. 3. The transition between the hermetic seal pin and the microstrip trace will affect electrical performance, as stated above. Several different methods of hermetic seal mounting and seal pin to microstrip trace attachment are used in the industry. Johnson TM Components can not recommend one method over the other as this is dependent upon the customer’s application. As always, quotes for non-standard field replaceable connectors and/or hermetic seals are welcome. Emerson Network Power Connectivity Solutions 299 Johnson Avenue SW, Waseca, MN 56093 • 800 -247- 8256 • +1 (507) 833-8822 • www.EmersonConnectivity.com onlinecomponents.com SMA - 50 Ohm Connectors Specifications INCHES (MILLIMETERS) CUSTOMER DRAWINGS AVAILABLE UPON REQUEST ELECTRICAL RATINGS Insertion Loss: (dB maximum) Impedance: 50 ohms Straight flexible cable connectors Frequency Range: and adapters ...................... 0.06 f (GHz), tested at 6 GHz Dummy loads ..........................................................................0-2 GHz Right angle flexible cable Flexible cable connectors ................................................... 0-12.4 GHz connectors ......................... 0.15 f (GHz), tested at 6 GHz Uncabled receptacles, RA semi-rigid and adapters ........... 0-18.0 GHz Straight semi-rigid cable Straight semi-rigid cable connectors and connectors with contact ..... 0.03 f (GHz), tested at 10 GHz field replaceable connectors ............................................... 0-26.5 GHz Right angle semi-rigid cable VSWR: (f = GHz) Straight Right Angle Cabled Connectors Cabled Connectors connectors ......................... 0.05 f (GHz), tested at 10 GHz Straight semi-rigid cable RG-178 cable .............................. 1.20 + .025f 1.20 + .03f connectors w/o contact ...... 0.03 f (GHz), tested at 16 GHz RG-316, LMR-100 cable .............. 1.15 + .02f 1.15 + .03f Straight low loss flexible RG-58, LMR-195 cable ................ 1.15 + .01f 1.15 + .02f cable connectors ................ 0.06 f (GHz), tested at 1 GHz RG-142 cable ............................... 1.15 + .01f 1.15 + .02f Right Angle low loss flexible LMR-200, LMR-240 cable ............ 1.10 + .03f 1.10 + .06f cable connectors ................ 0.15 f (GHz), tested at 1 GHz .086 semi-rigid ............................ 1.07 + .008f 1.18 + .015f Uncabled receptacles, field replaceable, dummy loads .....................N/A .141 semi-rigid (w/contact) .......... 1.05 + .008f 1.15 + .015f Insulation Resistance: 5000 megohms minimum .141 semi-rigid (w/o contact) ...... 1.035 + .005f Contact Resistance: (milliohms maximum) Initial After Environmental Jack-bulkhead jack adapter and plug-plug adapter ................. 1.05 + .01f Center contact (straight cabled connectors Jack-jack adapter and plug-jack adapter ............................... 1.05 + .005f and uncabled receptacles) ........................... 3.0* 4.0* Uncabled receptacles, dummy loads .................................................. N/A Center contact (right angle cabled Field replaceable (see page 59) ......................................................... N/A  connectors and adapters) ..............................4.0 6.0 Working Voltage: (Vrms maximum) Field replaceable connectors ........................6.0 8.0 Connectors for Cable Type Sea Level 70K Feet Outer contact (all connectors) ...........................2.0 N/A RG-178 ...................................................................... 170 45 Braid to body (gold plated connectors) .............0.5 N/A RG-316; LMR-100, 195, 200 ..................................... 250 65 Braid to body (nickel plated connectors) ...........5.0 N/A RG-58, RG-142, LMR-240, .086 semi-rigid, *N/A where the cable center conductor is used as a contact uncabled receptacles, .141 semi-rigid w/o contact ... 335 85 RF Leakage: (dB minimum, tested at 2.5 GHz) .141 semi-rigid with contact and adapters ................. 500 125 Flexible cable connectors, adapters and .141 semi-rigid Dummy loads ................................................................................. N/A  connectors w/o contact ............................................................. -60 dB Dielectric Withstanding Voltage: (VRMS minimum at sea level) Field replaceable w/o EMI gasket .............................................. -70 dB Connectors for RG-178 ................................................................... 500 .086 semi-rigid connectors and .141 semi-rigid connectors Connectors for RG-316; LMR-100, 195, 200 .................................. 750 with contact, and field replaceable with EMI Gasket ................ -90 dB Connectors for RG-58, RG-142, LMR-240, .086 semi-rigid, Two-way adapters ...................................................................... -90 dB field replaceable, uncabled receptacles ...................................... 1000 Uncabled receptacles, dummy loads .............................................. N/A Connectors for .141 semi-rigid with contact and adapters ............ 1500 RF High Potential Withstanding Voltage: (Vrms minimum, tested at 4 Connectors for .141 semi-rigid w/o contact, dummy loads .............. N/A   and 7 MHz) Corona Level: (Volts minimum at 70,000 feet) Connectors for RG-178 ................................................................... 335 Connectors for RG-178 ................................................................... 125 Connectors for RG-316; LMR-100, 195, 200 .................................. 500 Connectors for RG-316; LMR-100, 195, 200 .................................. 190 Connectors for RG-58, RG-142, LMR-240, .086 semi-rigid, Connectors for RG-58, RG-142, LMR-240, 086 semi-rigid, .141 semi-rigid cable w/o contact, uncabled receptacles .............. 670 uncabled receptacles, .141 semi-rigid w/o contact .......................... 250 Connectors for .141 semi-rigid with contact and adapters ............ 1000 Connectors for .141 semi-rigid with contact and adapters .............. 375 Power Rating (Dummy Load): 0.5 watt @ + 25°C, derated to 0.25 watt @ Dummy loads ...................................................................................... N/A +125°C MECHANICAL RATINGS Engagement Design: MIL-C-39012, Series SMA Cable Retention: Axial Force*(lbs) Torque (in-oz) Engagement/Disengagement Force: 2 inch-pounds maximum Connectors for RG-178 ............................ 10 N/A Mating Torque: 7 to 10 inch-pounds Connectors for RG-316, LMR-100 ........... 20 N/A Bulkhead Mounting Nut Torque: 15 inch-pounds Connectors for LMR-195, 200 .................. 30 N/A Coupling Proof Torque: 15 inch-pounds minimum Connectors for RG-58, LMR-240 ............. 40 N/A Coupling Nut Retention: 60 pounds minimum Connectors for RG-142 ............................ 45 N/A Contact Retention: Connectors for .086 semi-rigid ................. 30 16 6 lbs. minimum axial force (captivated contacts) Connectors for .141 semi-rigid ................. 60 55 4 inch-ounce minimum torque (uncabled receptacles) *Or cable breaking strength whichever is less. Durability: 500 cycles minimum 100 cycles minimum for .141 semi-rigid connectors w/o contact ENVIRONMENTAL RATINGS (Meets or exceed the applicable paragraph of MIL-C-39012) Temperature Range: - 65°C to + 165°C Shock: MIL-STD-202, Method 213, Condition I Thermal Shock: MIL-STD-202, Method 107, Condition B Vibration: MIL-STD-202, Method 204, Condition D Corrosion: MIL-STD-202, Method 101, Condition B 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 onlinecomponents.com SMA - 50 Ohm Connectors Specifications INCHES (MILLIMETERS) CUSTOMER DRAWINGS AVAILABLE UPON REQUEST 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 or Tefzel per ASTM D 3159 or PFA 340 per ASTM 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 or brass per QQ-B-613, gold plated per MIL-G-45204 .00001" min. or nickel plated per QQ-N-290 Mounting Hardware: Brass per QQ-B-626 or QQ-B-613, gold plated per MIL-G-45204 .00001" min. or nickel plated per QQ-N-290 Seal Rings: Silicone rubber per ZZ-R-765 EMI Gaskets: Conductive silicone rubber per MIL-G-83528, Type M * All gold plated parts include a .00005" min. nickel underplate barrier layer. Mating Engagement for SMA Series per MIL-C-39012 JACK PLUG PLUG JACK NOTES 1. ID OF CONTACT TO MEET VSWR, CONTACT RESISTANCE AND INSERTION WITHDRAWAL FORCES WHEN MATED WITH DIA .0355-.0370 MALE PIN. Emerson Network Power Connectivity Solutions 299 Johnson Avenue SW, Waseca, MN 56093 • 800 -247- 8256 • +1 (507) 833-8822 • www.EmersonConnectivity.com onlinecomponents.com