MIL-PRF-55339/25C
17 September 2004
SUPERSEDING
MIL-A-55339/25B
23 March 1988
PERFORMANCE SPECIFICATION SHEET
ADAPTER, CONNECTOR, COAXIAL, RADIO FREQUENCY, IN-LINE, JAMNUT MOUNTED,
(BETWEEN SERIES BNC JACK TO SERIES N JACK), CLASS 2
This specification is approved for use by all Departments
and Agencies of the Department of Defe nse.
The requirements for acquiring the document described herein shall
consist of this specification sheet and MIL-PRF-5 5339.
FIGURE 1. General configuration.
AMSC N/A FSC 5935
Reference Series Contact
A BNC Socket
B N Socket
INCH-POUND
MIL-PRF-55339/25C
2
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for general i nformation only.
3. All undimensioned pictorial representations are for reference purposes only.
4. Interfaces shall be in accordance with MIL-STD-348, series BNC socket contac t and series N
socket conta ct.
Inches mm Inches mm
.002
.022
.062
.120
.130
.263
.300
.526
.531
.532
0.05
0.58
1.57
3.05
3.30
5.68
7.62
13.36
13.49
13.51
.543
.625
.630
.645
.745
.755
.900
1.014
1.038
1.071
1.781
13.79
15.88
16.00
16.38
18.92
19.18
22.86
25.76
26.37
27.20
45.24
FIGURE 1. General configuration - Continued.
DESIGN AND CONSTRUCTION
General configuration: See figure 1.
Impedance: 50 ohms, nom.
Working voltage: Sea level – 500 V rms.
70,000 feet (4.437 kPa) – 125 V rms.
Frequency range: 0 to 4 GHz.
Temperature range: -65º to +165ºC.
PERFORMANCE (install ation torque of 6 to 10 in. lb (0.68 to 1.13 Nm), series N)
Dimensions: See figure 1 and MIL-STD-348.
Center contact retention:
Series BNC Series N
Axial force (pounds, minimum) 6 (26.7 N) 6 (26.7 N)
Torque (ounce-inch, minimum) N/A N/A
Force to engage and disengage:
Series BNC Series N
Longitudinal force (pound s, maximum) 3.0 (13.3 N) N/A
Torque (inch-pounds, maximum) 2.5 (0.34 Nm) 6.0 (0.68 Nm)
MIL-PRF-55339/25C
3
Coupling proof torque: Not applicable.
Mating characteristics:
Center contact (socket):
Series BNC Series N
Oversize test pin diameter (inch, minimum): .057 (1.45 mm) .074 (1.88 mm)
Insertion depth (inch, minimum) .125 (3.17 mm) .125 (3.17 mm)
Number of insertions 1 1
Maximum test pin (insertion force test):
Steel test pin diameter (inch, minimum) .054 (1.37 mm) .066 (1.68 mm)
Pin finish (microinches) 16 (0.407 µm) 16 (0.407 µm)
Insertion force (pounds, maximum 2(8.89 N) 2 (8.89 N)
Number of insertions 1 1
Minimum test pin (withdrawal force):
Steel test pin diameter (inch, minimum) .052 (1.32 mm) .063 (1.60 mm)
Pin finish (microinches) 16 (0.407 µm) 16 (0.407 µm)
Withdrawal force (ounces, minimum) 2 (0.56 N) 2 (0.56 N)
Number of withdrawals 1 1
Outer contact: Not applicable.
Permeability: < 2.0.
Seal: Hermetic – Not applicable.
Pressurized – 30 psi (207 kPa) mi nimum.
Weatherproof – 30 lbf/in2 (207 kPa).
Insulation resistance: 5,000 megohms, minimum.
Voltage standing wave ratio (VSWR): 1.30, max .5 to 4 GHz.
RF leakage (total): -55 dB, min, 2 to 3 GHz.
RF insertion loss: .2 dB, max, 3 GHz (.012 √F (GHz) dB max tested at 3 GHz).
Durability: 500 cycles minimum at 12 cycles/min max. The connect or shall meet the mating
characteristics and force to engage and disengage requirements.
Dielectric withstanding: Test voltage – 1,500 V rms, minimum (sea level).
Contact resistance (milliohms, max).
Contact Initial After
Center 2.0 2.5
Outer 0.2 N/A
Outer (-70001) 0.4 N/A
Vibration, high frequency: Interruptions – 1 microsecond (µs), maximum.
Shock: Test condit ion I .
Thermal shock: Test condi tion C.
MIL-PRF-55339/25C
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Moisture resistance: 200 megohms, minimum.
Corona level:
Voltage – 375 V, minimum.
Altitude - 70,000 feet (4.437 kPa), minimum.
RF high potential withstanding voltage:
RF voltage – 1,000 V rms, minimum.
Frequency – 5 MHz, minimum.
Salt spray (corrosion): Applicable.
Coupling mechanism retention force: No t applicable.
Part or Identifying Number (PIN): M55339/25-00606.
PIN: M55339/25-70001. CAUTION: THIS PART HAS A NICKEL PLATED BODY AND IS NOT FOR
USE IN APPLICATIONS WHERE PAS SIVE INTERMODULATION GENERATI ON (PIM) MAY BE A
CONCERN.
Cross reference: See table I.
TABLE I. Cross reference of PINs.
PIN Superseded PIN or type designation 1/
M55339/25-00606 51C12929
UG-606/U
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. PIN M55339/25-00606 shall be used in all cases for marking a nd
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-55 339, this document references the following:
MIL-STD-348
MIL-PRF-55339/25C
5
CONCLUDING MATERIAL
Custodians: Preparing activity:
Army – CR DLA - CC
Navy – EC
Air Force – 11 (Project 5935-4657-024)
DLA - CC
Review activities:
Army – AR, AT, 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 responsi bilities can change, you should verify the currency of the information above
using the ASSIST Online database at http://assist.daps.dla.mil.
