INCH-POUND
MIL-PRF-39012/55H
8 June 2011
SUPERSEDING
MIL-PRF-39012/55G
6 January 2006
PERFORMANCE SPECIFICATION SHEET
CONNECTORS, PLUGS, ELECTRICAL, COAXIAL, RADIO FREQUENCY
(SERIES SMA (CABLED) - PLUG, PIN CONTACT, CLASS 2)
This specification is approved for use by all Departments
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. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. For dimension A, see tables I and V.
4. Dimension .400 (10.16 mm) is the largest overall diameter of the connector.
5. Width across flats are to accommodate wrench, nominal size of .3125 (7.938 mm) minimum in
accordance with FED-STD-H28, wrench openings.
6. Dimension A defines the overall length of the connector when assembled to the cable.
7. All undimensioned pictorial configurations are for reference purposes only.
8. Series SMA, pin contact interface in accordance with MIL-STD-348.
9. Metric equivalents are in parentheses.
FIGURE 1. General configuration.
AMSC N/A FSC 5935
MARKING IMPLEMENTATION DATE,
CATEGORY B, SEE TABLE VII
MIL-PRF-39012/55H
2
Insulator dimensions for category D only
Inches
mm
.001
0.03
.005
0.13
.008
0.20
.021
0.53
.042
1.07
.140
3.56
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only .
3. Chamfer is optional, if chamfer is used put chamfer on a 30º maximum.
4. Three holes .016 (0.41 mm) minimum diameter, equally spaced, are required for safety wiring after
mating. Location on coupling nut optional.
FIGURE 2. Category D captivation detail.
MIL-PRF-39012/55H
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TABLE I. Dash number, cross reference and dimensions.
Dash number 1/ 2/ 3/
# Applicable cable group
from MIL-PRF-39012,
appendix B
Dimensions
Inches (millimeters)
Maximum 4/
Category A - Field serviceable (no special tools required) 5/
3006
3106 6/
4006
4106 6/
CABLE GROUP I
M17/93-RG178 8/ 9/
A
1.030 (26.16)
3007
3107 6/
4007
4107 6/
CABLE GROUP II
M17/113-RG316 8/ 9/
3008
3108 6/
4008
4108 6/
CABLE GROUP IV
M17/54-RG122 8/ 9/
3009
3109 6/
4009
4109 6/
CABLE GROUP VI
M17/60-RG142 10/
M17/128-RG400 9/
M17/84-RG223 8/
3010 7/
3110 6/ 7/
4010 7/
4110 6/ 7/
CABLE GROUP VI
M17/111-RG303 8/ 9/
3030
3130 6/
4030
4130 6/
CABLE GROUP III
M17/152-00001 8/ 9/
Category C - Field replaceable (MIL-DTL-22520 crimp tool) 11/
3025
3125 6/
4025
4125 6/
CABLE GROUP I 12/
M17/93-RG178 8/ 9/
A
1.250 (31.75)
3026
3126 6/
4026
4126 6/
CABLE GROUP IIa 13/
M17/113-RG316 8/ 9/
3027
3127 6/
4027
4127 6/
CABLE GROUP IV 14/
M17/54-RG122 8/ 9/
3028
3128 6/
4028
4128 6/
CABLE GROUP VIb 15/
M17/60-RG142 10/
M17/128-RG400 9/
M17/84-RG223 8/
3029
3129 6/
4029
4129 6/
CABLE GROUP VIa 15/
M17/111-RG303 9/
M17/28-RG058 8/
See notes at end of table.
MIL-PRF-39012/55H
4
TABLE I. Dash number, cross reference and dimensions – Continued.
Dash number 1/ 2/ 3/
# Applicable cable group
from MIL-PRF-39012,
appendix B
Dimensions
Inches-millimeters
maximum 4/
Category D - Filed replaceable - Defined piece parts 11/ 16/ 17/
3502
3602 6/
4502
4602 6/
CABLE GROUP VIb
M17/60-RG142 8/ 10/
M17/128-RG400 9/
A
1.250 (31.75)
1/ These connectors have captivated contacts.
2/ For logistics purposes, only connectors with safety wire holes will be stocked.
3/ Coupling nuts shall be corrosion resistant steel with a passivated finish in accordance with
SAE-AMS2700, type 2 (applies only to -3XXX series connectors).
4/ Dimensions are in inches, millimeters are in parentheses.
5/ All corrosion resistant steel bodied connectors which are designed to be assembled to the cable
outer conductor using solder shall be gold plated to a minimum thickness of 50 microinches
(1.27 m) in accordance with ASTM B488, type II, code C, class 1.27 at least in the area of solder
attachment.
6/ No safety wire holes.
7/ These parts are inactive for new design, new designs should procure to dash numbers -*009 and
-*109. These dash numbers use the same cable group (VI).
8/ Cable to be used when performing tests except in 10/.
9/ Preferred cable.
10/ Cable to be used for the +200 C temperature cycling test. Connectors mate with connectors of the
same material; i.e., "3XXX" series dash numbers mate only with other "3XXX" series connectors
and "4XXX” series connectors with other "4XXX" series connectors. This cable may be used for
test purposes with the approval of the Qualifying Activity.
11/ These connectors are assembled, using the applicable crimp tool, to the specified cables stripped
as shown on figure 4.
12/ Preferred die M22520/5-33 closure B, alternate die M22520/5-03 closure B.
13/ Preferred die M22520/5-35 closure B, alternate die M22520/5-03 closure A.
14/ Preferred die M22520/5-41 closure B, alternate die M22520/5-05 closure B, or -09 closure A.
15/ Preferred die M22520/5-19 closure B, alternate die M22520/5-05 closure A, or -11, 57, closure A.
16/ Complete connector assembly shall consist of a body, center contact, ferrule and assembly
instructions.
17/ Not for use in Army equipment.
# The latest version of each cable shall be applicable.
ENGINEERING DATA:
Nominal impedance: 50 ohms.
Frequency range: 0 to 12.4 GHz.
Voltage rating: The voltage rating shall be specified in table II.
Temperature range: -65 C to +165 C.
MIL-PRF-39012/55H
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TABLE II. Voltage rating.
Dash
no.
Contact no.
1/
A
±.001
Basic crimp
tool 2/
Crimp die or
positioner
Crimp
tensile
minimum
Color band
Color band
3502
4502
55-10
.041
M22520/1-01
Solder or
M22520/1-15
6 pounds
Red
Silver
Dash
no.
Ferrule no.
1/
A
±.003
B
±.003
Basic crimp
tool 2/
Crimp die or
positioner
M22520/5-
3502
4502
55-50
.250
.220
M22520/5-01
-05, -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 3. Contact and ferrule dimensions for category D only.
MIL-PRF-39012/55H
6
Inches
mm
Inches
mm
.001
0.03
.050
1.27
.002
0.05
.062
1.57
.003
0.08
.100
2.54
.005
0.13
.133
3.38
.010
0.25
.153
3.89
.015
0.38
.193
4.90
.024
0.61
.220
5.59
.025
0.64
.250
6.35
.038
0.97
.421
10.69
.041
1.04
.500
12.70
NOTES :
1. Dimensions are in inches.
2. Metric equivalents are given for information only .
3. Crimp tensile test shall be in accordance with SAE-AS39029.
4. Copyright notice: All information disclosed in these specification sheets which is or may be
copyrighted is reproduced herein with the express permission of the copyright owner.
5. .003 inch maximum break.
6. 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.
NOTES :
1. Dimensions are in inches.
2. Metric equivalents are given for information only .
FIGURE 4. Cable stripping dimensions for field replaceable connectors.
Inches
mm
.130
.150
.271
.291
.380
.400
.530
3.30
3.81
6.88
7.39
9.65
10.16
13.46
MIL-PRF-39012/55H
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REQUIREMENTS:
Dimensions and configuration: See figures 1, 2, 3, and 4.
Force to engage and disengage:
Longitudinal force: Not applicable.
Torque: 2 inch-pounds, maximum.
Coupling proof torque: 15 inch-pounds, minimum.
Inspection conditions: For each test of threaded coupling connectors where the test is performed on
mated pairs, the pairs shall be torqued to 7 to 10 inch-pounds.
Mating characteristics: See MIL-STD-348 for dimensions.
Hermetic seal: Not applicable.
Leakage (pressurized connectors): Not applicable.
Insulation resistance: In accordance with MIL-STD-202: 5,000 megohms, minimum.
Center contact retention: 6 pounds minimum axial force. Applicable to captivated center contacts only.
Radial torque: Not applicable.
Corrosion (salt spray): In accordance with MIL-STD-202.
Voltage standing wave ratio (VSWR): From 0.5 to 12.4GHz, or approximately 80 percent of the cutoff
frequency of the test cable, whichever is lower.
Cable group VSWR
I 1.20 +0.025F (F in GHz)
II, IIa, III, IV 1.15 +0.02F (F in GHz)
VI, VIa, VIb 1.15 +0.01F (F in GHz)
Swept frequency VSWR test setup:
Item 6: VSWR shall be less than 1.025 +.002F (F in GHz).
Item 16: VSWR shall be less than 1.025 +.002F (F in GHz).
Second step of VSWR checkout procedure: VSWR shall be less than 1.080 +.005F (F in GHz).
Group B inspection: Use step 5, long cable method.
Qualification and group C inspection: Use step 5, long cable method.
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.
MIL-PRF-39012/55H
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Conductor resistance: In milliohms, maximum.
Initial After environment
Center conductor: 3.0 4.0
Outer contact: 2.0 N/A
Braid to body: 0.5 N/A
NOTE: 5 milliohms is permissible (braid to body) on passivated steel bodied connectors.
Dielectric withstanding voltage at sea level: Method 301 of MIL-STD-202.
Cable group V rms
I 500
II, IIa, III, IV 750
VI, VIa, VIb 1,000
Vibration, high frequency: In accordance with MIL-STD-202, method 204, test condition D.
Shock: In accordance with MIL-STD-202, method 213, test condition I.
Thermal shock: In accordance with MIL-STD-202, test condition B, except high temperature shall be
+85 C. High temperature shall be +200 C for connectors using +200 C cables (see tables I and V).
Moisture resistance: In accordance with MIL-STD-202.
No measurements at high humidity. Insulation resistance shall be at least 200 mega ohms within
5 minutes after removal from humidity.
Corona level:
Altitude: 70,000 feet.
Cable group V rms min.
I 125
II, IIa, III, IV 190
VI, VIa, VIb 250
RF high potential withstanding voltage:
Frequency: 5 to 7.5 MHz.
Leakage current: Not applicable.
Cable group V rms min.
I 335
II, IIa, III, IV 500
VI, VIa, VIb 670
Cable retention force shall be as specified in table III.
MIL-PRF-39012/55H
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TABLE III. Cable retention force.
Cable dielectric outer
diameter
Pounds (min.)
Single braid
Double braid
Inches (max.)
.036
.067
.110
.122
10
20
30
40
N/A
N/A
N/A
45
Coupling mechanism retention force: 60 pounds minimum.
Safety wire hold pullout: Applicable.
RF leakage: -60 dB minimum tested at a frequency between 2 and 3 GHz.
RF insertion loss: dB maximum = .06 F (GHz). Test frequency, 6 GHz.
Part or Identifying Number (PIN): M39012/55- (dash number from table I or "B" number from table V).
Group qualification: See table IV.
TABLE IV. Group qualification and retention testing.
See notes at end of table.
MIL-PRF-39012/55H
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TABLE IV. Group qualification and retention testing – Continued.
1/ Individual connectors other than listed in the middle column, are self qualifying. Retention of qualification of
connectors of equal or lower frequency is granted by similarity.
2/ Qualification of connectors qualifies connectors of the same material only.
3/ Connectors qualified with safety wire holes automatically qualifies connectors without safety wire
holes.
* Denotes material.
NOTES:
1. For qualification retention, where more than one part is listed in a group in the middle 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. This note does not apply if there is only one port listed in the middle column.
2. If a connector manufacturer produces a connector which meets all the requirements for two or
more connector PINs (within the same series), the manufacturer may receive qualification
approval for two or more connector PINs by 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.
MIL-PRF-39012/55H
11
TABLE V. Category B – nonfield replaceable (special tools may be required).
See notes at end of table.
M39012/55B ^
Applicable cable # M17/
Dimensions
Inches 1/ 2/ 3/ 4/
(millimeters)
maximum
3011 5/
3111 5/ 6/
4011 5/
4111 5/ 6/
M17/93-RG178
M17/169-00001
A
1.250 (31.75)
3012 5/
3112 5/ 6/
4012 5/
4112 5/ 6/
M17/119-RG174
M17/113-RG316
M17/173-00001
M17/172-00001
3013 5/
3113 5/ 6/
4013 5/
4113 5/ 6/
M17/54-RG122*
M17/157-00001
3014 5/
3114 5/ 6/
4014 5/
4114 5/ 6/
M17/28-RG058*
M17/155-00001
3015 5/
3115 5/ 6/
4015 5/
4115 5/ 6/
M17/60-RG142*@
M17/158-00001
3016 5/
3116 5/ 6/
4016 5/
4116 5/ 6/
M17/84-RG223*
M17/167-00001
3017 5/
3117 5/ 6/
4017 5/
4117 5/ 6/
M17/111-RG303*
M17/170-00001
Not for Air Force, Navy or Army Use. For OEM Use
Only.
MIL-PRF-39012/55H
12
TABLE V. Category B – Non-field replaceable (special tools may be required) – Continued.
1/ Dimensions are in inches, millimeters are in parentheses.
2/ Coupling nuts shall be corrosion resistant steel with a passivated finish in accordance with
SAE-AMS2700 type 2 (applies only to "-3XXX" series connectors).
3/ For logistics purposes, only connectors with safety wire holes will be stocked.
4/ All corrosion resistant steel bodied connectors which are designed to be assembled to the cable outer
conductor using solder shall be gold plated to a minimum thickness of 50 microinches (1.27 m) in
accordance with ASTM B488, type II, code C, class 1.27 at least in the area of solder attachment.
5/ Inactive for new design.
6/ No safety wire holes.
7/ These connectors have captivated center contacts.
^ Connectors mate with connectors of the same material; i.e., M39012/59-3001 mates with M39012/55-
3001, and M39012/59-4001 mates with M39012/55-4001.
# The latest version of each cable shall be applicable,
Caution is directed to the application of this cable above 400 MHz. Attenuation is tested only at 400
MHz. SRL and power handling capabilities are not stipulated herein.
* Cable to be used when performing tests requiring cable except as in note @.
@ Cable to be used for the +200 C temperature cycling test and may be used for testing purposes with
the approval of the Qualifying Activity.
M39012/55B ^
Applicable cable # M17/
Dimensions
Inches 1/ 2/ 3/ 4/
(millimeters)
maximum
3018 7/
3118 6/ 7/
4018 7/
4118 6/ 7/
M17/93-RG178
M17/169-00001
A
1.375 (34.93)
3019 7/
3119 6/ 7/
4019 7/
4019 6/ 7/
M17/119-RG174
M17/173-00001
M17/113-RG316
M17/172-00001
3020 7/
3120 6/ 7/
4020 7/
4120 6/ 7/
M17/54-RG122*
M17/157-00001
3021 7/
3121 6/ 7/
4021 7/
4121 6/ 7/
M17/28-RG058*
M17/155-00001
3022 7/
3122 6/ 7/
4022 7/
4122 6/ 7/
M17/60-RG142*@
M17/158-00001
3023 7/
3123 6/ 7/
4023 7/
4123 6/ 7/
M17/84-RG223*
M17/167-00001
3024 7/
3124 6/ 7/
4024 7/
4124 6/ 7/
M17/111-RG303
M17/170-00001
MIL-PRF-39012/55H
13
Maintenance replacements for category B: See table VI.
TABLE VI. Maintenance replacements for category B.
Category B
Dash number *
Category C
Dash number
Category A
Dash number
Category D
Dash number
B^011
B^012
B^013
B^014
B^015
B^016
B^017
B^018
B^019
B^020
B^021
B^022
B^023
B^024
^025
^026
^027
^029
^028
^028
^029
^025
^026
^027
^029
^028
^028
^029
^006
^007
^008
^009
^009
^009
^010
^006
^007
^008
^009
^009
^009
^010
^502
^502
* Category B connectors are for original installation only. They will not be stocked or acquired by the
Government.
^ The material of the item shall be the same material as the item being replaced. Example: 55B3011
(corrosion resistant steel) replaces 55-3025.
Cross reference of PIN’s: See table VII.
TABLE VII. Supersession data.
Preferred PIN
M39012/55B 1/
Superseded PIN
M39012/55-
Preferred PIN
M39012/55B 1/
Superseded PIN
M39012/55-
^011
^111
^012
^112
^013
^113
^014
^114
^015
^115
^016
^116
^017
^117
^011
^111
^012
^112
^013
^113
^014
^114
^015
^115
^016
^116
^017
^117
^018
^118
^019
^119
^020
^120
^021
^121
^022
^122
^023
^123
^024
^124
^018
^118
^019
^119
^020
^120
^021
^121
^022
^122
^023
^123
^024
^124
1/ The “B” PIN is required marking. The connectors manufactured prior to 3 April 1987 that are in stock or
distribution and were previously qualified and marked with the old PIN shall also be considered acceptable for
Government use until stock is purged.
^ The material of the item shall be the same material as the item being replaced. Example: 55B3011
replaces 55-3011.
MIL-PRF-39012/55H
14
Changes from previous issue. The margins of this specification are marked with vertical lines to indicate
where changes from the previous issue were made. 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 and relationship to the last previous issue.
Referenced documents. In addition to MIL-PRF-39012, this document references the following:
ASTM B488
MIL-STD-202
MIL-STD-348
SAE-AMS2700
SAE-AS39029
MIL-DTL-22520
FED-STD-H28
CONCLUDING MATERIAL
Custodians: Preparing activity:
Army - CR DLA - CC
Navy - EC
Air Force - 85 (Project 5935-2009-094)
DLA - CC
Review activities:
Army - AR, AT, EA, MI
Navy - AS, MC, OS, SH
Air Force – 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 https://assist.daps.dla.mil .