MIL-PRF-39012/22B
w/AMENDMENT 1
20 April 2009
SUPERSEDING
MIL-PRF-39012/22B
16 November 2006
PERFOR MAN CE S PECIFICATION SHEET
CONNECTORS, RECEPTACLES, ELECTRICAL, COAXIAL, RADIO FREQUENCY,
(SERIES BNC (UNCABLED), SOCKET CONTACT, FLANGE MOUNTED, CLASS 2)
This specification is approved for use by all Depart-
ments and Agencies of the Department of Defense.
The requirements for acquiring the product described herein shall consist of
this specification sheet and MIL-PRF-39012.
NOTES:
1. Dimens ions are in inches .
2. For dimensions ‘A’, ‘B’, ‘C’, ‘D’; ‘E’ and ‘F’, see table I.
3. Metric equivalents are given for information only.
4. All undimensioned pictorial representations are for reference purposes
only.
5. Receptacle recommended for component part use and for use on panels with a .078 inch (1.98
mm) ma xi mum t hi ckn e ss.
6. Bayonet studs and edges of flange shall be within 3 of the orientation shown.
7. Interface shall be in accordance with MIL-STD-348, socket contact.
8. There shall be a solid barrier in the socket between the pin entry and the solder pocket to prevent
solder wicking.
FIGURE 1. General configuration.
AMSC N/A FSC 5935
Inches mm
.059
.149
.245
.255
.338
.348
1.50
3.78
6.22
6.48
8.59
8.84
INCH-POUND
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MIL-PRF-39012/22B
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TABLE I. Dash numbers and overall dimensions.
Inches (millimeters) 2/ Part or Identifying Number
(PIN) 1/ Dim. Minimum Maximum
M39012/22-X001 A
B
C
D
E
F
--
.682 (17.32)
.605 (15.37)
--
.496 (12.60)
.085 (2.16)
1.187 (30.15)
.692 (17.58)
.645 (16.38)
.436 (11.07)
.504 (12.80)
.095 (2.41)
1/ For cross reference of dash number to superseded PIN or type
designation, see table III.
2/ Dimensions are in inches. Metric equivalents are given for information only.
X Denotes connector body plating material option. The only plating options allowable are Silver or
Nickel over brass in accordance with MIL-PRF-39012. Only connectors of the same materials shall
be mated to avoid dissimilar metal problems. CAUTION: A NICKEL PLATED BODY IS NOT FOR
USE IN APPLICATIONS WHERE PASSIVE INTERMODULATION GENERATION (PIM) MAY BE A
CONCERN (http://amphenolrf.com/simple/PIM%20Paper.pdf). Silver is the preferred plating
option.
Group qualification: See table II.
TABLE II. Group qualification. 1/ 2/
Group Submission and qualification of
any of the following connectors Qualifies the following
connectors
I M39012/21-X001
M39012/21-X002
M39012/21-X003
M39012/22-X001
M39012/21-X001
M39012/21-X002
M39012/21-X003
M39012/22-X001
1/ If a connector manufacturer produces a connector which meets all the requirements for two or more
connector PIN’s (within the same series), the manufacturer may receive qualification approval for two
or more connector PIN’s qualifying the one connector. It is not necessary that such connectors be in
the same group. Each connector, however, must be marked with its own appropriate PIN. For group
qualification, the connectors must be of similar design and be of the same materials and plating.
2/ For qualification retention, where more then one part is listed in a group in this column, data may be
supplied on any of those parts in order to retain qualification for those parts in the corresponding right
hand column. The part does not necessarily have to be the part initially qualified.
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MIL-PRF-39012/22B
w/AMENDMENT 1
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TABLE III. Cross reference of PIN.
PIN Substitute for type 1/
designation
M39012/22-0001 UG-290/U
1/ The superseded PIN or the type designation
is for cross reference only. The PIN M39012/
22-XXXX shall be used in all cases for marking and
identifying the connector.
ENGINEERING DATA
Nominal impedance: 50 ohms.
Frequency range: 0 to 4 GHz.
Voltage rating: 500 volts rms maximum working voltage at sea level. 125 volts rms maximum at
70,000 feet (4.437 kPa).
Temperature rating: -65C to +165C.
REQUIREMENTS:
Design and construction: See figure 1.
Center contacts: 4 pounds (17.8 N) minimum axial force. 4 inch-ounces (0.03 Nm) minimum radial
torque.
Force to engage and disengage:
Longitudinal force: 3 pounds (13.34 N), maximum.
Torque: 2.5 inch-pounds (0.28 Nm), maximum.
Coupling mechanism retention force: Not applicable.
Mating characteristics:
See MIL-STD-348 for mating dimensions.
Contacts with spring members:
Oversize test pin: .057 inch (1.45 mm) diameter minimum (non-closed entry contacts only).
Insertion depth: .125 inch (3.17 mm) minimum.
Number of insertions: 1.
Insertion force test: Steel test pin diameter - .054 inch (1.37 mm), minimum.
Test pin finish: 16 microinches (0.406 µm).
Insertion force: 2 pounds (8.90 N), maximum.
Withdrawal force test: Steel test pin diameter - .052 inch (1.32 mm), maximum.
Withdrawal force: 2 ounces (0.56 N), minimum.
Test pin finish: 16 microinches (0.406 µm).
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MIL-PRF-39012/22B
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Hermetic seal: Not applicable.
Leakage (pressurized connectors): Not applicable.
Insulation resistance: Method 302, test condition B of MIL-STD-202. 5,000 megohms minimum.
Contact resistance: In milliohms maximum.
Initial After environment
Center contact 2.0 2.5
Outer contact (Silver) .2 Not applicable
Outer contact (Nickel) .4 Not applicable
Resistance to test prod damage: Not applicable.
Corrosion (salt spray): Method 101, test condition B of MIL-STD-202.
Voltage standing wave ratio (VSWR): Not applicable.
Dielectric withstanding voltage: Method 301 of MIL-STD-202. 1,500 volts rms at sea level.
Corona level:
Voltage: 375 volts minimum.
Altitude: 70,000 feet (4.437 kPa).
RF high potential withstanding voltage:
Voltage and frequency: 1,000 volts rms at 5 MHz.
Leakage current: Not applicable.
Contact durability: Insertion and withdrawal force 500 cycles minimum at 12 cycles/min maximum.
The mating force shall meet the mating characteristics requirements.
Vibration, high frequency: Method 204, test condition B of MIL-STD-202. No discontinuities.
Shock: Method 202 of MIL-STD-202.
Acceleration – 50 G’s at 7 milliseconds.
No discontinuities.
Temperature cycling: Method 102, test condition C of MIL-STD-202, except high temperature shall be
200C.
Thermal shock: Not applicable.
Moisture resistance: Method 106 of MIL-STD-202. No measurements at high humidity. Insulation
resistance shall be at least 200 megohms within 5 minutes after removal from humidity. Dielectric
withstanding voltage shall be met.
Cable retention force: Not applicable.
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MIL-PRF-39012/22B
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RF leakage: Not applicable.
Insertion loss: Not applicable.
Qualification by similarity: Qualification by similarity may be given for the like styles of currently qualified
TNC series connectors with the approval of the qualifying and preparing activity. Similarity will include,
cable accommodation, materials and plating, assembly procedures and crimp tools/dies, as a minimum.
Amendment notations. The margins of this specification are marked with vertical lines to indicate
modifications generated by this amendment. This was done as a convenience only and the Government
assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are
cautioned to evaluate the requirements of this document based on the entire content irrespective of the
marginal notations.
Referenced documents. In addition to MIL-PRF-39012, this document references the following:
MIL-STD-202
MIL-STD-348
CONCLUDING MATERIAL
Custodians: Preparing activity:
ArmyCR DLA - CC
Navy – EC
Air Force – 85 (Project 5935-2008-193)
NASA - NA
DLA – CC
Review activities:
Army – AM, AT, CR4, 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.
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