MIL-PRF-39012/18H
w/AMENDMENT 1
20 April 2009
SUPERSEDING
MIL-PRF-39012/18H
16 November 2006
PERFORMANCE SPECIFICATION SHEET
CONNECTORS, RECEPTACLE, ELECTRICAL, COAXIAL, RADIO FREQUENCY,
(SERIES BNC, (CABLED), 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.
Inches mm Inches mm Inches mm
.075
.095
.099
.120
.245
.255
1.91
2.41
2.51
3.05
6.22
6.48
.338
.348
.436
.496
.504
.505
8.59
8.84
11.07
12.60
12.80
12.83
.535
.565
.680
.700
13.59
14.35
17.30
17.80
FIGURE 1. General configuration.
AMSC N/A FSC 5935
INCH-POUND
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NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for Information only.
3. For dimension A, see tables I and III.
4. Dimension .505 inch (12.83 mm) is the largest overall diameter of the connector.
5. Wrench flats (if required for assembly) are to accommodate standard wrench opening in
accordance with FED-STD-H28, appendix 10.
6. Receptacles not recommended for use on panels with greater than .078 inch (1.98 mm) maximum
thickness.
7. All undimensioned pictorial representations are for reference purposes only.
8. Bayonet studs and edges of flange shall be within 3° of the orientation shown.
9. Dimension A, defines the maximum length of the connector when assembled to the appropriate
cable.
10. Series BNC, socket contact interface in accordance with MIL-STD-348.
FIGURE 1. General configuration – Continued.
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Chamfer is optional.
4. Concave depression .100 inch (2.54 mm) x .005 inch (0.13 mm) deep between studs permissible.
FIGURE 2. Category D captivation detail.
Inches mm
.002
.006
.010
.032
.036
.077
0.05
0.15
0.25
0.81
0.91
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TABLE I. Dash numbers, cross-reference, and dimensions.
Part or Identifying
Number (PIN) 1/
M39012/18-
Applicable cable 2/
M17/ Dimensions Inch (millimeters)
maximum #
Category A – Field serviceable (no special tools required) 3/
X102
(Superseding –0111 4/ )
Cable group VI
60-RG142 5/
128-RG400 6/
X101
(Superseding –0118 4/ )
Cable group VII
110-RG302 5/ 6/ 7/
X103
Cable group IV
54-RG122 6/
X220
Cable group II
113-RG316 5/ 6/
X225
Cable group X
127-RG393 5/ 6/
A
1.250 (31.75)
Category C – field replaceable (MIL-DTL-22520 crimp tool)
See note next to applicable cable for crimp die 3/ 8/
X013
Cable group VIA 9/
111-RG303 5/ 6/
X014
Cable group VIB 9/
60-RG142 5/
128-RG400 6/
A
1.500 (38.10)
See notes at end of table.
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TABLE I. Dash numbers, cross-reference, and dimensions – Continued.
PIN 1/
M39012/18-
Applicable cable 2/
M17/ Dimensions Inch (millimeters)
maximum #
Category C – field replaceable (MIL-DTL-22520 crimp tool)
See note next to applicable cable for crimp die 3/ 8/
X015
(Superseding –X010 4/)
Cable group VIIA 10/
110-RG302 7/
X016
Cable group IV 11/
54-RG122 6/
X017
Cable group VIIB 10/
90-RG71 6/ 7/
X221
Cable group IIA 12/
113-RG316 5/ 6/
A
1.500 (38.10)
Category D – Field replaceable – Defined piece part 3/ 8/ 13/ 14/
X501
Cable group IV
54-RG122 6/
X502
Cable group V
95-RG180 5/ 6/ 7/
X503
Cable group VIB
60-RG142 5/
128-00001 6/
X504
Cable group VIA
111-RG303 5/ 6/
A
1.234 (31.34)
See notes at end of table.
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TABLE I. Dash numbers, cross-reference, and dimensions – Continued.
1/ For cross-reference of PIN to superseded PIN or designation, see table IV.
2/ The latest version of cash cable shall be applicable.
3/ These connectors have captivated center contacts.
4/ The superseded PIN is NOT acceptable for Government use.
5/ Cable to be used for the +200°C temperature cycling tests. This cable can be used for tests with the
approval of the Qualifying Activity.
6/ Cable to be used when performing test requiring cable except as in 5/ and 7/.
7/ These are not 50-ohm cables; therefore, when attached to the specified connectors, VSWR, RF,
leakage and insertion loss are not applicable.
8/ These connectors are assembled using the applicable crimp tool, to the specified cables stripped as
shown on figure 4.
9/ M22520/5-19 closure B or M22520/5-05 closure A.
M22520/5-11 closure A.
M22520/5-57 closure A.
10/ M22520/5-19 closure A or 822520/5-07 closure A.
M22520/5-13 closure A.
M22520/5-59 closure A.
11/ M22520/5-41 closure B or M22520/5-05 closure B.
M22520/5-09 closure A.
12/ M22520/5-35 closure B or M22520/5-03 closure A.
13/ Complete connector assembly shall consist of a body, center contact, ferrule and assembly
instructions.
14/ Not to be used in Army equipment.
# 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. C AUTION: 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.
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Dash
number
Ferrule
number
1/
A
± 0.003
B
± 0.003
Basic crimp
tool 2/
Crimp die or
Positioner
M22520/5
X501
X502 18-50 0.212 0.175
-9
Closure A
or
-5, -41
Closure B
X503 18-51 0.250 0.220
X504 18-52 0.245 0.206
M22520/5-01 -5, -11
Closure A
or
-19, -57
Closure B
1/ Contact numbers and ferrule numbers are for identification only.
2/ Class 2 tool may be used by OEM (see MIL-DTL-22520).
Inches mm Inches mm Inches mm Inches mm
.001
.002
.003
.005
.015
.017
0.03
0.05
0.08
0.13
0.38
0.43
.033
.035
.040
.043
.067
.083
0.84
0.89
1.02
1.09
1.70
2.11
.145
.175
.183
.206
.210
.212
3.68
4.45
4.65
5.23
5.33
5.38
.220
.230
.235
.250
.478
.500
5.59
5.84
5.97
6.35
12.14
12.70
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
FIGURE 3. Contact and ferrule dimensions for category D only.
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Dash no. Contact
no. 1/
A
+0.001
-0.002
Basic crimp
tool 2/
Crimp die or
positioner
Crimp
tensile,
pounds
min.
(N)
Color
band
Color
band
X501 18-12 0.033 10 lbs.
(44.28) Orn
X502 18-11 0.017
M22520/1-01 M22520/1-12 6 lbs.
(26.69) Blue
X503
X504 18-10 0.043 M22520/1-01 M22520/1-12
20 lbs.
(88.96) Red
Green
1/ Contact numbers and ferrule numbers are for identification only.
2/ Class 2 tool may be used by OEM (see MIL-DTL-22520).
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Contact material shall be copper beryllium. Connectors supplied with phosphor bronze
contacts are no longer acceptable for Government use.
4. Crimp tensile test shall be in accordance with SAE-AS39029.
5. Copyright notice: All information disclosed in these specification sheets which is or may be copyright
is reproduced herein with the express permission of the copyright owner.
6. .003 inch maximum break.
7. Color bands shall be positioned so that no coloring material enters the inspection hole.
FIGURE 3. Contact and ferrule dimensions for category D only – Continued.
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Inches mm
.146
.166
.333
.353
.427
.447
.593
3.71
4.22
8.46
8.97
10.85
11.35
15.06
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
FIGURE 4. Recommended cable stripping dimensions for category C connectors.
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: - 65°C to + 165°C.
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REQUIREMENTS:
Dimensions and configuration: See figures 1, 2, 3 and 4.
Force to engage and disengage:
Longitudinal force - 3 pounds (13.34 N), maximum.
Torque – 2.5 inch-pounds (.28 Nm), maximum.
Coupling proof torque: Not applicable.
Inspection conditions: Coupling torque not applicable.
Mating characteristics:
In accordance with MIL-STD-348 and figures 2 and 3 for dimensions.
Center contact (socket):
Oversize test pin: .057 inch (1.45 mm) diameter minimum (nonclosed 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 (.56 N), minimum.
Test pin finish: 16 microinches (0.406 µm).
Hermetic seal: Not applicable.
Leakage (pressurized connectors): Not applicable.
Insulation resistance: Method 302 of MIL-STD-202, test condition B, 5,000 megohms minimum.
Center contact retention: 6 pounds (26.69 N), minimum axial force. Applicable to
captivated-center-contact connectors only.
Corrosion (salt spray): Method 101 of MIL-STD-202, test condition B.
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Voltage standing wave ratio (VSWR): From 500 to 4 GHz, or approximately 80 percent of upper
cutoff frequency of the cable, whichever is lower; 1.30 maximum.
Swept frequency VSWR test setup:
Item 6 - VSWR shall be Less than 1.015 + .005 F (F in GHz).
Item 16- VSWR shall be Less than 1.015 + .005 F (F in GHz).
Second step of VSWR checkout procedure - VSWR shall be less then 1.045 + .019 F (F in GHz).
Group B inspection - VSWR shall be less than 1.1 + .01 F (F in GHz).
Qualification and group C inspection - VSWR shall not exceed 1.15.
Connector durability: 500 cycles minimum at 12 cycles/minute maximum. The connector shall meet
the mating characteristics and force to engage end disengage requirements.
Contact resistance: In milliohms maximum:
Initial
After environment
Center contact 1.5 2.0
Outer contact (silver) .2 Not applicable
Outer contact (nickel) .4 Not applicable
Braid to body .1 Not applicable
Dielectric withstanding voltage: Method 301 of MIL-STD-202. 1,500 volts rms minimum at sea level.
Vibration, high frequency: Method 204 of MIL-STD-202, test condition B. No discontinuity permitted.
Shock: Method 213 of MIL-STD-202, test condition G. No discontinuity permitted.
Thermal shock: Method 107 of MIL-STD-202, test condition B, except test high temperature shall be
+85°C. High temperature shall be +200°C for connectors using +200° cables (see tables I and III).
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.
Corona Level:
Voltage - 375 volts rms, minimum.
Altitude - 70,000 feet.
RF high potential withstanding voltage:
Voltage and frequency: 1,000 volts rms at a frequency from 5 to 7.5 MHz.
Leakage current: Not applicable.
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Cable retention force:
Noncrimp assemblies: 40 pounds (177.93 N) minimum.
Crimp assemblies:
10 pounds (44.48 N), minimum for cables .155 - .189 inch (3.94 mm – 4.80 mm) OD.
20 pounds (88.96 N), minimum for cables .190 -.229 inch (4.82 mm – 5.82 mm) OD.
30 pounds (133.45 N), minimum for cables .230 -.249 inch (5.84 mm – 6.32 mm) OD.
40 pounds (177.93 N), minimum for cables .250 inch (6.35 mm) OD and Larger.
Coupling mechanism retention force: Not applicable.
RF Leakage: -55 dB minimum, tested at a frequency between 2 and 3 GHz.
Insertion loss: .2 dB maximum tested at 3 GHZ.
PIN: M39012/18 - (dash number from table I or “B” number from tableIII).
Group qualification: See table II.
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TABLE II. Group qualification. 1/
Group Submission and qualification of any
of the following connectors 2/ 3/
Qualifies the following
connectors
I M39012/
17-X101
17-X103
17-X111
17-X118
18-X102
18-X103
18-X111
18-X118
19-X101
19-X110
19-X111
19-X118
18-X220
M39012/
17-X101
17-X102
17-X103
17-X111
17-X118
18-X101
18-X102
18-X103
18-X111
18-X118
19-X101
19-X102
19-X110
19-X111
19-X118
18-X220
II 17-X102
18-X101
19-X102
17-X102
18-X101
19-X102
III 17B0004
17B0005
17B0006
17B0007
17B0009
17B0019
18B0004
18B0005
18B0006
18B0007
18B0009
18B0019
19B0003
19B0004
19B0005
19B0006
19B0008
19B0019
17B0004
17B0005
17B0006
17B0007
17B0008
17B0009
17B0012
17B0019
18B0004
18B0005
18B0006
18B0007
18B0008
18B0009
18B0012
18B0019
19B0003
19B0004
19B0005
19B0006
19B0007
19B0008
19B0012
19B0019
See notes at end of table.
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TABLE II. Group qualification - Continued. 1/
Group Submission and qualification of any
of the following connectors 2/ 3/
Qualifies the following
connectors
IV M39012/
17B0008
17B0012
18B0008
18B0012
19B0007
19B0012
M39012/
17B0008
17B0012
18B0008
18B0012
19B0007
19B0012
V 17-X013
17-X014
17-X016
17-X020
18-X013
18-X014
18-X016
18-X020
19-X013
19-X014
19-X016
19-X020
18-X221
17-X013
17-X014
17-X015
17-X016
17-X017
17-X020
18-X013
18-X014
18-X015
18-X016
18-X017
18-X020
19-X013
19-X014
19-X015
19-X016
19-X017
19-X020
19-X221
VI 17-X015
17-X017
18-X015
18-X017
19-X015
19-X017
17-X015
17-X017
18-X015
18-X017
19-X015
19-X017
VII 18-X501
18-X503
18-X504
18-X501
18-X502
18-X503
18-X504
VIII 18-X502 18-X502
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.
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TABLE II. Group qualification - Continued. 1/
2/ For qualification retention, where more than 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.
3/ 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.
TABLE III. Cateqory B - Nonfield replaceable (special tools may be required). 1/
Dash number
1/ 2/ 3/
Applicable
Cable M17/ 4/ Dimensions
Inches
(millimeters)
maximum #
M39012/18B0004 28-RG058*
M39012/18B0005 84-RG223*
M39012/18B0006 111-RG303*
M39012/18B0007 60-RG142*@
M39012/18B0008 29-RG59*Δ
30-RG062 Δ
97-RG210Δ
M39012/18B0009 54-RG122*
M39012/18B0012 90-RG71*Δ
M39012/18B0019 110-RG302*Δ
A
1.500 (2810)
1/ For maintenance replacements for category B, see table V.
2/ For cross-reference of PIN to superseded PIN or type designation, see table IV.
3/ Inactive for new design.
4/ The latest version of each cable shall, be applicable.
# Dimensions are in inches. Metric equivalents are given for information only.
* Cable to be used when performing tests requiring cable except as in @ and Δ.
@ Cable to be used for the +200°C temperature cycling tests. This cable can be used for tests with the
approval of the Qualifying Activity.
Δ These are not 50 ohm cables, therefore, when attached to the specified connectors, VSWR, RF
leakage, and insertion loss are not applicable.
Not for Air Force
,
Arm
y,
or Nav
y
use. For OEM use onl
y
.
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TABLE IV. Cross-reference of PIN’s.
Preferred PIN
M39012/18
Substitute for PIN
or type designation 1/ 2/
-0101
-0102
-0103
B0004
B0005
B0006
B0007
B0008
B0009
-0111
B0012
-0013
-0014
-0015
-0016
-0017
-0018
B0019
-0020
-0501
-0502
-0503
-0504
UG-262/U, M39012/18-0001
UG-291/U, M39012/18-0002
UG-1055/U, M39012/18-0003
UG-1802/U, M38012/18-0004
UG-1803/U, M39012/18-0005
UG-1814/U, M39012/18-0006
UG-1811/U, M39012/18-0007
UG-1801/U, M39012/18-0008
UG-1793/U, M39012/18-0009
M39012/18-0011
M39012/18-0012
M39012/18-0018
M39012/18-0019
1/ The superseded PIN or the type designation I for cross-reference only. Where a superseded PIN or
type designation is not given, none was assigned or will be assigned. The PIN M39012/18-XXXX
shall be used in all cases for marking and identifying the connector.
2/ The basic type designation includes all letter versions of the specified number, e.g. UG-18/U
includes UG-18 A/U, UG-18B/U, etc.
TABLE V. Maintenance replacements for category B.
Category B
no.*
Inactive for
new design
Category C
dash no.
Category A
dash no.
Category D
dash no.
B0004 0013 0102 0504
B0005 0014 0102 ---
B0006 0013 0112 ---
B0007 0014 0102 0503
B0008 0015 0101 ---
B0009 0016 0103 0501
B0012 0017 0101 ---
B0019 0020 0118 ---
* Category B connectors are for original installation only.
They will not be stocked or acquired by the Government.
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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:
FED-STD-H28
MIL-STD-202
MIL-STD-348
MIL-DTL-22520
SAE-AS39029
CONCLUDING MATERIAL
Custodians: Preparing activity:
Army - CR DLA - CC
Navy - EC
Air Force – 85 (Project 5935-2008-189)
NASA - NA
DLA - CC
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.
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