INCH-POUND MIL-PRF-55339/20A 17 September 2004 SUPERSEDING MIL-PRF-55339/20 6 May 1975 PERFORMANCE SPECIFICATION SHEET ADAPTER, CONNECTOR, COAXIAL, RADIO FREQUENCY, IN-LINE, (BETWEEN SERIES BNC JACK TO SERIES N PLUG), CLASS 2 This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the document described herein shall consist of this specification sheet and MIL-PRF-55339. Reference A B Series BNC N Inches .827 1.356 Contact Socket Pin mm 21.01 34.44 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. All undimensioned pictorial representations are for reference purposes only. 4. Interface shall be in accordance with MIL-STD-348, series BNC socket contact and series N pin contact. FIGURE 1. General configuration. AMSC N/A FSC 5935 MIL-PRF-55339/20A DESIGN AND CONSTRUCTION General configuration: See figure 1. Impedance: 50 ohms, nom. Working voltage: Sea level - 5000 V rms. 70,000 feet (4.437 kPa) - 125 V rms. Frequency range: 0 to 4 GHz. Temperature range: -65 to +165C. PERFORMANCE (installation torque of 6 to 10 lb. (0.68 to 1.13 Nm), series N) Dimensions: See figure 1 and MIL-STD-348. Center contact retention: Axial force (lb. min) Torque (in. oz, min) Series BNC 6 (26.7 N) N/A Series N 6 (26.7 N) N/A Force to engage and disengage: Longitudinal force (lb. max) Torque (in. lb, max) Series BNC 3.0 (13.3 N) 2.5 (0.34 Nm) Series N 0 6.0 (0.68 Nm) Coupling proof torque: 15 in. lb (1.69 Nm), min, series N. Mating characteristics, series BNC: Center contact (socket): Oversize test pin dia - .057 in. (1.45 mm), min. Insertion depth - .125 in. (3.17 mm), min. Number of insertions - 1. Max test pin (insertion force test), series BNC: Steel test pin dia - .054 in. (1.37 mm), min. Pin finish - 16 microinches (0.407 m). Insertion force - 2 lb (8.89 N), max. Number of insertions - 1. Min test pin (withdrawal force), series BNC: Steel test pin dia - .052 in. (1.32 mm), max. Pin finish - 16 microinches (0.407 m). Withdrawal force - 2 oz (0.56 N), min. Number of withdrawals - 1. Outer contact, series N: Min test ring ID - .316 in. (8.03 mm), max. Ring finish - 16 microinches (0.407 m). Insertion force - 25 lb (111.2 N), max. Insertion depth - .093 in. (2.36 mm), min. Number of insertions - 1. Slotted member contact only, series N: Max test ring ID - .324 in. (8.23 mm), min. Test ring finish - 16 microinches (0.407 m). Insertion depth - .031 in. (0.79 mm), max. Number of insertions - 1. 2 MIL-PRF-55339/20A Permeability: <2.0. Seal: Hermetic - Not applicable. Pressurized - Not applicable. Weatherproof - Not applicable. Insulation resistance: 5,000 megohms, min. VSWR: 1.35:1, max .5 to 4 GHz. RF leakage (total): -55 dB, min, 2 to 3 GHz. RF insertion loss: .35 dB, max, 3 GHz (.020 F (GHz) dB max tested at 3 GHz). Durability: 500 cycles minimum at 12 cycles/min, maximum. The connector shall meet the mating characteristics and force to engage and disengage requirements. Dielectric withstanding: Test voltage - 1,500 V rms, min (sea level). Contact resistance (milliohms, max). Contact Center Outer Outer (-70001) Initial 2.0 .25 .50 After 2.5 N/A N/A Vibration, high frequency: Interruptions - 1 s, max. Shock: Test condition I. Thermal shock: Test condition C. Moisture resistance: 200 megohms, min. Corona level: Voltage - 375 V, min. Altitude - 70,000 feet (4.437 kPa), min. RF high potential withstanding voltage: RF voltage - 1,000 V rms. min. Frequency - 5 MHz, min. Salt spray (corrosion): Applicable. Coupling mechanism retention force: 100 lb (444.8 N), min, series N. Part or Identifying Number (PIN): M55339/20-00201. PIN: M55339/20-70001. CAUTION: THIS PART HAS A NICKEL PLATED BODY AND IS NOT FOR USE IN APPLICATIONS WHERE PASSIVE INTERMODULATION GENERATION (PIM) MAY BE A CONCERN. 3 MIL-PRF-55339/20A Cross reference: See table I. TABLE I. Cross reference of PIN. PIN Superseded PIN or type designation 1/ M55339/20-00201 UG-201A/U REB49324 1/ The superseded PIN or the type designation is for cross reference only. Where a superseded PIN or type designation is not given, none was assigned or will be assigned. The PIN M55339/20-00201 shall be used in all cases for marking and identifying the adapter. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Referenced documents. In addition to MIL-PRF-55339, this document references the following: MIL-STD-348 CONCLUDING MATERIAL Custodians: Army - CR Navy - EC Air Force - 11 DLA - CC Preparing activity: DLA - CC (Project 5935-4657-019) Review activities: Army - AR, AT, EA, MI Navy - AS, MC, OS, SH Air Force - 19, 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http://assist.daps.dla.mil. 4