MIL-PRF-39012/20H
w/AMENDMENT 1
20 April 2009
SUPERSEDING
MIL-PRF-39012/20H
16 November 2006
PERFOR MAN CE S PECIFIC AT IO N SHEET
CONNECTO RS, PLUG , EL ECT RICAL, CO AX IA L, RA DIO FREQUENCY,
(SERIES BNC (CABLED), PIN CONTACT, RIGHT ANGLE, 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.
FIGURE 1. General configuration.
AMSC N/A FSC 5935
INCH-POUND
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MIL-PRF-39012/20H
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NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. For dimensions A and B, see tables I and III.
4. Dimension A, 1.218 inch and .593 inch are the largest overall diameter of the connector.
5. Wrench flats are to accommodate standard wrench in accordance with FED-STD-H28, appendix 10.
6. All undimensioned pictorial representations are for reference purposes only.
7. Dimension A defines the maximum length of the connector when assembled to the appropriate cable.
8. Series BNC, pin contact interface in accordance with MIL-STD-348.
FIGURE 1. General configuration – Continued.
TABLE I. Dash numbers, cross-reference, and dimensions.
Part or Identifying
Number (PIN) 1/
M39012/20-
Applicable cable 2/
M17/ Dimensions Inches (millimeters)
maximum #
Category A – Field serviceable (no special tools required) 3/
X101
Cable group VI
60-RG142 5/
128-RG400 6/
X102
(Superseding –0108 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
1.750 (44.45)
See notes at end of table.
Inches mm
.44
.510
.593
.800
.963
1.218
11.18
12.95
15.06
20.32
24.46
30.94
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MIL-PRF-39012/20H
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TABLE I. Dash numbers, cross-reference, and dimensions – Continued.
PIN 1/
M39012/20- Applicable cable 2/
M17/ Dimensions Inches (millimeters)
maximum #
Category C – Field replaceable (MIL-DTL-22520 crimp tool)
See note next to applicable cable group for crimp die 3/ 8/
X006
Cable group VIA 9/
111-RG303 5/ 6/
X007
Cable group VIB 9/
60-RG142 5/
128-RG400 6/
X011
(Superseding –0010 4/)
Cable group VIIA 10/
110-RG302 5/ 6/ 7/
X016
Cable group IV 11/
54-RG122 6/
X017
Cable group VIIB 10/
90-RG71 6/ 7/
X222
Cable group IIA 12/
113-RG316 5/ 6/
A
2.000 (50.80)
See notes at end of table.
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MIL-PRF-39012/20H
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TABLE I. Dash numbers, cross-reference, and dimensions – Continued.
PIN 1/
M39012/20- Applicable cable 2/
M17/ Dimensions Inches (millimeters)
maximum #
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-RG400 6/
X504
Cable group VIA
Cable group VIA
111-RG303 5/ 6/
A
B
1.828 (46.43)
1.578 (40.08)
1/ For cross-reference of dash number to superseded PIN or designation, see table IV.
2/ The latest version of each 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 +200C temperature cycling tests. This cable may 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 acc ept abl e.
8/ These connectors are assembled using the applicable crimp tool, to the specified cables stripped as
shown on figure 3.
9/ M22520/5-19 closure B or M22520/5-05 closure A.
M22520/5-11 closure A.
M22520/5-57 closure A.
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TABLE I. Dash numbers, cross-reference, and dimensions – Continued.
10/ M22520/5-19 closure A or M22520/5-07 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. CAUTION: A NICKEL PL ATED 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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MIL-PRF-39012/20H
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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 20-50 0.212 0.175
05, 41
Closure B
or 9
Closure A
X503 20-51 0.250 0.220
X504 20-52 0.245 0.206
M22520/5-01 5, 11, 57
Closure A or
19 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).
FIGURE 2. Contact and ferrule dimensions for category D only.
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Inches mm Inches mm Inches mm Inches mm
.001
,002
.005
.015
.017
.033
0.03
0.05
0.13
0.38
0.43
0.84
.035
.040
.043
.067
.083
.145
0.89
1.02
1.09
1.70
2.11
3.68
.175
.183
.206
.212
220
.235
4.45
4.65
5.23
5.38
5.59
5.97
.245
.250
.500
.611
6.22
6.35
12.70
15.52
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 20-12 0.033 10 lbs (44.48) Orn.
X502 20-11 0.017
M22520/1-
01 M22520/1-
12 6 lbs (26.69) Blue
X503
X504 20-10 0.043
M22520/1-
01 M22520/1-
12 20 lbs (88.96) Red Violet
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. Crimp tensile test sha ll be i n accor danc e with SA E-A S 3902 9.
4. Contact numbers and ferrule numbers are for identification only.
5. .003 inch (0.08 mm) maximum break.
6. Color bands shall be positioned so that no coloring material enters the inspection hole.
FIGURE 2. Contact and ferrule dimensions for category D only – Continued.
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MIL-PRF-39012/20H
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Inches mm
.146 3.71
.166 4.22
.333 8.46
.353 8.97
.427 10.85
.447 11.35
.593 15.06
NOTES:
1. Dimensions are in inches .
2. Metric equivalents are given for information only.
FIGURE 3. Cable stripping dimensions for field replaceable connectors.
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MIL-PRF-39012/20H
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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
Dimensions and configuration: See figures 1, 2 and 3.
Force to engage and disengage:
Longitudinal force: 3 pounds (13.34 N), maximum.
Torque: 2.5 inch-pounds (0.28 Nm), maximum.
Coupling proof torque: Not applicable.
Inspection conditions: Coupling torque not applicable.
Mating characteristics:
In accordance with MIL-STD-348.
Outer contact:
Test ring ID: .319 inch (8.10 mm) maximum, 16 microinch (0.406 µm) finish.
Insertion force: 5 pounds (22.24 N), maximum when inserted a minimum of .093 inch (2.36 mm).
Contacts with slotted members: Shall contact a .324 inch (8.23 mm), minimum diameter ring with
.031 inch (0.79 mm) of their tip ends.
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.
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MIL-PRF-39012/20H
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Corrosion (salt spray): Method 101 of MIL-STD-202, test condition B.
Voltage standing wave ratio (VSWR): From .5 to 4 GHz, or approximately 80 percent of upper cutoff
frequency of the cable, whichever is lower; 1.35, 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 than 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 per minute, maximum. The connector shall meet
the mating characteristics and force to engage and disengage requirements.
Initial: 5 pounds (22.24 N), maximum.
Final: 5 pounds, (22.24 N) maximum; 1 pound (4.45 N), 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
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
+85C. High temperature shall be +200C for connectors using +200C 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 leve l:
Voltage: 375 volts rms, minimum.
Altitude: 70,000 feet (4.437 kPa).
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MIL-PRF-39012/20H
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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.
Cable retention force:
Noncrimp assemblies: 40 pounds (177.93 N), minimum.
Crimp assemblies:
50 pounds (222.41 N), minimum for cables .155 - .189 inch (3.94 mm – 4.80 mm) OD.
60 pounds (266.90 N), minimum for cables .190 - .229 inch (4.83 mm – 5.82 mm) OD.
75 pounds (333.62 N), minimum for cables .230 - .249 inch (5.84 mm – 6.32 mm) OD.
90 pounds (400.34 N), minimum for cables .250 inch (6.35 mm) OD and larger.
Coupling mechanism retention force: 100 pounds (444.82 N), minimum.
RF leakage: -55 dB minimum, tested at a frequency between 2 and 3 GHz. This requirement may be
met by meeting the RF leakage requirement on the MIL-PRF-39012/16 connector which has the same
mating end design and which is intended for the same cable.
Insertion loss: .3 dB, maximum tested at 3 GHz.
PIN: M39012/20 (dash number from table I or “B” number from table III).
Group qualification: See table II. TABLE II. Group qualification. 1/
Group Submission and qualification or
any of the following connectors 2/ 3/Qualifies the following
connectors
I
M39012/20
-X101
-X108
M39012/20
-X101
-X108
X102
II BX002
BX003 BX002
BX003
III -X006
-X007
-X010
-X006
-X007
-X010
IV -X501
-X503
-X504
-X501
-X502
-X503
-X504
V -X502 -X502
See notes at end of table.
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TABLE II. Group qualification – Continued. 1/
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 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. Category B – Non-field replaceable (special tools may be required).
PIN
1/ 2/ 3/
Applicable
cable
M17/ 4/
Dimensions
Inches
(millimeters)
maximum #
M39012/20B0002 028-RG058*
M39012/20B0003 084-RB223* A 2.000 (50.80)
1/ For cross-reference of PIN to superseded PIN or type designation, see table IV.
2/ For maintenance replacements for category B, see table V.
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.
Not for Air Force
,
Arm
y,
or Nav
y
use. For OEM use onl
y
.
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MIL-PRF-39012/20H
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TABLE IV. Cross-reference of PIN’s.
Preferred PIN
M39012/20 Substitute for PIN
or type designation 1/ 2/
-0101
B0002
B0003
-0006
-0007
-0108
-0010
-0501
-0502
-0503
-0504
UG-913/U, M3901 2/20-000 1
UG-1812/U, M39012/20-0002
UG1813/U, M39012/20-0003
M39012/20-0004
M39012/20-0008
M39012/20-0009
M39012/20-0005
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 M39012/20-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.
Categor y B
number*
Inactive for
new desi gn
Categor y C
dash number Categor y A
dash number Categor y D
dash number
B0002
B0003 0006
0007 0101
0101 0504
--
* Category B connectors are for original installation only.
They will not be stocked or acquired by the Government.
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-PRF-39012/16
MIL-DTL-22520
SAE-AS39029
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MIL-PRF-39012/20H
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CONCLUDING MATERIAL
Custodians: Preparing activity:
Army – CR DLA – CC
Navy – EC
Air Force – 85 (Project 5935-2008-191)
NASA - NA
DLA - CC
Review activities:
Army – AT, AV, 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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