MIL-PRF-39012/55H
w/AMENDMENT 2
02 September 2017
SUPERSEDING
MIL-PRF-39012/55H
w/AMENDMENT 1
10 December 2016
PERFORMANCE SPECIFICATION SHEET
CONNECTORS, PLUGS, ELECTRICAL, COAXIAL, RADIO FREQUENCY
(SERIES SMA (CABLED) - PLUG, PIN CONTACT, CLASS 2)
This specification i s approved for use by all Departments
and Agencies of the Department of Defense.
The requirements f or acquiring the product described herein shall consist of
this specification sheet and MIL-PRF-39012.
NOTES:
1. Dimensions are in in ches. Metric equivalents are i n parenth eses and given f or information o nly.
2. For dimension A, see tables I and V.
3. Dimension .400 (10.16 mm) is the largest ov erall diameter of the connector.
4. Width across fl at s are to accommodat e wrench, nominal size of . 3125 (7. 938 mm) minimum in
accordance with FED-STD-H28.
5. Dimension A def i nes t he overall length of the connector when assem bl ed to the cable.
6. All undimensioned pictorial configurations a re f or reference purposes o nl y.
7. Series SMA, pin contact interface in accord ance with MIL-STD-348.
FIGURE 1. General configuration.
AMSC N/A FSC 5935
INCH-POUND
MARKING IMPLEMENTATION DATE,
CATEGORY B, SEE TABLE VII
MIL-PRF-39012/55H
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Insulator dimensi ons 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. Metric equi valents are given for information only.
2. Chamfer is optional, if chamfer is used put chamfer on a 30º maximum.
3. Three holes .016 (0.41 mm) minimum diameter, equally spaced, are required for safety wiring after
mating. Location on coupl ing nut optional.
FIGURE 2. Category D captivation det ail.
MIL-PRF-39012/55H
w/AMENDMENT 2
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TABLE I. Dash number, cross referen ce and dimensions.
Dash number 1/ 2/ 3/
# Applicable cable group
from MIL-PRF-39012,
appendix B
Dimensions
Maximum 4/
Category A - Fi el d s erviceable (no special tools requir ed) 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 tabl e.
MIL-PRF-39012/55H
w/AMENDMENT 2
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TABLE I. Dash number, cross referen ce 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 re pl aceable - Define d piece parts 11/ 16/
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 connector s have captivat ed contact s .
2/ For logistics purposes, onl y connectors with safety wire holes will be stocked.
3/ Coupling nuts shall be corrosion resistant steel with a pa s sivated finis h in accordance with
SAE-AMS2700, type 2 (applies on ly to -3XXX series connectors).
4/ Dimensions are in inches, mill imeters are in parenthes es.
5/ All corrosion resis tant steel bodied connec tors which are designed to be as sembled to the cable
outer conductor using solder shall be gold plat ed to a minimum thi c kness of 50 m i c roinches
(1.27 µm) 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 inac tive for new design, new designs should procure to dash numbers -*009 and
-*109. These dash numbers use the same cab l e group (VI).
8/ Cable to be used when performi ng tests except in 10/.
9/ Preferred cable.
10/ Cable to be us ed for the +200°C t emperature cycling te s t. Connectors mate with con nec tors of the
same material; i.e., " 3XXX" series dash numbers mate only with other "3XXX" ser ies connectors
and "4XXX” series connectors with other "4XXX" ser ies connectors. This cable may be used for
test purposes with the a pproval of t he Qualifying Activity.
11/ These connectors are assem bled, using the applicable crimp tool, to the specifie d c ables strip ped
as shown on figure 4.
12/ Preferred die M22520/5-33 c losure B, al ternate die M2 2520/5-03 closure B.
13/ Preferred di e M 22520/5-35 closure B, alternate die M22520/5-03 clos ure A.
14/ Preferred di e M 22520/5-41 closure B, alternate die M22520/5-05 clos ure B, or -09 closure A.
15/ Preferred di e M 22520/5-19 closure B, alternate die M22520/5-05 clos ure A, or -11, 57, closure A.
16/ Complete conn ec tor assembly shall consist of a body, center c ontact, f errule and assem bly
instructions.
# The latest version of each cable shall be applic able.
ENGINEERING DATA:
Nominal impedan ce: 50 ohms.
Frequency range: 0 to 12.4 GHz.
Voltage rating: T he voltage rating shall be specified in table II.
Temperature range: -65°C to +165°C.
MIL-PRF-39012/55H
w/AMENDMENT 2
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TABLE II. Voltage rating.
Cables
Voltage max. (at sea level)
(V rms)
Voltage max. (V rms ) at 70,000
feet (4.437 kPa)
Cable group I
170
45
Cable group II, IIa, III, IV
250
65
Cable group VI, VIa, VIb
335
85
Dash
no.
Contact
no. 1/
A
±.001
Basic crim p
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 crim p
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 identificat ion only.
2/ Class 2 tool may be used by OEM (see MIL-DTL-22520).
FIGURE 3. Contact and ferrule dimens i ons f or category D only.
MIL-PRF-39012/55H
w/AMENDMENT 2
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. Metric equi valents are given for information only.
2. Crimp tensile test shall be in accordance with SAE-AS39029.
3. Copyright notice: All information disclosed in these specifi cat ion sheets which is o r m ay be
copyrighted is reproduced herein with t he express permission of the copyright owner.
4. .003 inch maximum break.
5. Color bands shall be posit i oned 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. Metric equi valents 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
w/AMENDMENT 2
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REQUIREMENTS:
Dimensions and conf i guration: See figures 1, 2, 3, and 4.
Force to engage and disengage:
Longitudinal forc e: Not applicable.
Torque: 2 inch-pounds, maximum.
Coupling proof t orque: 15 inch-pounds, minimum.
Inspection condit i ons: For each test of threaded coupling connectors where the test i s performed on
mated pairs, the pairs s hal l 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 resi stance: In accordance with MIL-STD-202-302: 5,000 megohms, minimum.
Center contact retention: 6 pounds mi nimum axial force. Appl icable to captivated center contacts only.
Radial torque: Not appl i cable.
Corrosion (salt spray): In accordance with MIL-STD-202-101, test condition B.
Voltage standing wave ratio (VSWR): From 0.5 to 12.4GHz, or ap prox i m ately 80 percent of the cutoff
frequency of the test cable, whichever i s l ower.
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 1.02 5 +. 002F (F in GHz).
Item 16: VSWR shall b e l ess than 1.025 +.002F (F in GHz).
Second step of VS WR ch eckout procedure: V SWR shall be less th an 1.080 +.005F (F in G Hz).
Group B inspection: Use step 5, long cable method.
Qualification and group C insp ect i on: Use step 5, lon g cable method.
Connector durability: 500 cycles minimum , at 12 cycles per minute, maximum. The connector shall
meet the mating chara ct eristics and forc e to engage and diseng age requirements.
MIL-PRF-39012/55H
w/AMENDMENT 2
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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 conne ctor s.
Dielectric withstanding voltage at sea level: MIL-STD-202-301.
Cable group V rms
I 500
II, IIa, III, IV 750
VI, VIa, VIb 1,000
Vibration, high frequency: In accordan ce with MIL-STD-202-204, test condi tion D.
Shock: In accordance with MIL-STD-202-213, t est condition I.
Thermal shock: In accord ance wit h MIL-STD-202-107, 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-202-106.
No measurements at hi gh humidity. Insulatio n resistance shall be at least 200 mega ohms within
5 minutes after removal from humidity.
Corona level:
Altitude: 70,000 f eet.
Cable group V rms min.
I 125
II, IIa, III, IV 190
VI, VIa, VIb 250
RF high potential withstanding volt age:
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 forc e shall be as specified i n table III.
MIL-PRF-39012/55H
w/AMENDMENT 2
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TABLE III. Cable retention force.
Cable dielectric out er
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 pull out : Applicable.
RF leakage: -60 dB mini mum tested at a f requency between 2 and 3 GHz.
RF insertion loss: dB maximum = .06√F (GHz). Test f requency, 6 GHz.
Part or Identifying Number (PIN): M39012/55- (dash number from table I or "B " numbe r from table V).
Group qualification: S ee t abl e IV.
TABLE IV. Group qualification and ret ention testing.
Group
Submission and quali fication of
any of the followin g connectors
1/ 2/
Qualifies the following
connectors 3/
I
M39012/55-*009
M39012/55-*006
M39012/55-*007
M39012/55-*008
M39012/55-*009
M39012/55-*010
M39012/55-*030
II
M39012/55B*015
M39012/55B*011
M39012/55B*012
M39012/55B*013
M39012/55B*014
M39012/55B*015
M39012/55B*016
M39012/55B*017
III
M39012/55B*022
M39012/55B*018
M39012/55B*019
M39012/55B*020
M39012/55B*021
M39012/55B*022
M39012/55B*023
M39012/55B*024
See notes at end of tabl e.
TABLE IV. Group qualification and ret ention testing – Continued.
MIL-PRF-39012/55H
w/AMENDMENT 2
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Group
Submission and quali fication of
any of the followin g connectors
1/ 2/
Qualifies the following
connectors 3/
IV
M39012/55-*028
M39012/55-*025
M39012/55-*026
M39012/55-*027
M39012/55-*028
M39012/55-*029
V
M39012/55-*502
M39012/55-*502
1/ Individual c onnectors other than listed i n the middle column, are self qualifying. R etention of qu ali fication of
connectors of equal or lower frequency is granted by sim il arity.
2/ Qualification of connectors qualifies connectors of the same materi al only.
3/ Connectors qualified with safety wire holes automatically qual ifies connec tors without safety wire
holes.
* Denotes materia l .
NOTES:
1. For qualification retent i on, where more than one part is listed in a group in the middle column, data
may be supplied on any of those parts in orde r t o ret ain qualification for those parts in the
corresponding right hand column. The part does not necessarily have to be the part init ial l y
qualified. This note does not apply if t here i s only one port listed in the middle column.
2. If a connector manufacturer produces a connector which meets all t he requirements for two or
more connector PINs (withi n the same series), the manufacturer may receiv e qualification
approval for two or more connector PINs by qualifying the one connect or. It is not
necessary that suc h 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
w/AMENDMENT 2
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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
3111 5/ 6/
4011 5/
M17/93-RG178
M17/169-00001∅
A
1.250 (31.75)
3112 5/ 6/
4012 5/
4112 5/ 6/
M17/119-RG174
M17/113-RG316
M17/173-00001∅
M17/172-00001∅
3113 5/ 6/
4013 5/
M17/54-RG122*
M17/157-00001∅
3114 5/ 6/
4014 5/
M17/28-RG058*
M17/155-00001∅
3115 5/ 6/
4015 5/
M17/60-RG142*@
M17/158-00001∅
3116 5/ 6/
4016 5/
M17/84-RG223*
M17/167-00001∅
3117 5/ 6/
4017 5/
M17/111-RG303*
M17/170-00001∅
Not for Air Force, Na vy or Army Use. For OEM Use
Only.
MIL-PRF-39012/55H
w/AMENDMENT 2
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TABLE V. Category B – Non-field replaceable (special tools may be requi red) – Continued.
1/ Dimensions ar e i n inches, m illim eters are in parentheses.
2/ Coupling nuts shall be corrosion resistant steel with a passivated finish in accordance with
SAE-AMS2700 type 2 (ap plies only to "-3XXX" series connectors).
3/ For logistics purposes, only co nnectors with s afety wire holes will be stocked.
4/ All corrosion res i s tant steel bodied connectors which ar e designed to be assembled to the cable outer
conductor using solder shall be gold plated to a minim um thickness of 50 microinches (1.27 µm) in
accordance with ASTM B488, type II, code C, class 1.27 at least in the ar ea of solder attachment.
5/ Inactive for new design.
6/ No safety wire holes.
7/ These connectors have captivated c enter contact s.
^ Connectors mate with connectors of the s ame 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 c abl e s hall be app li c able,
∅ Caution is directed to the application of this c able 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 requiri ng cable except as in note @.
@ Cable to be used for the +200°C temperature cycling test and may be used f or testing purposes with
the approval o f the Qualifying A c tivity.
Maintenance replacements for categ ory B : See table VI.
M39012/55B ^
Applicable cable #
M17/
Dimensions
Inches 1/ 2/ 3/ 4/
(millimeters)
maximum
3118 6/ 7/
4018 7/
M17/93-RG178
M17/169-00001∅
A
1.375 (34.93)
3119 6/ 7/
4019 7/
4019 6/ 7/
M17/119-RG174
M17/173-00001∅
M17/113-RG316
M17/172-00001∅
3120 6/ 7/
4020 7/
M17/54-RG122*
M17/157-00001∅
3121 6/ 7/
4021 7/
M17/28-RG058*
M17/155-00001∅
3122 6/ 7/
4022 7/
M17/60-RG142*@
M17/158-00001∅
3123 6/ 7/
4023 7/
M17/84-RG223*
M17/167-00001∅
3124 6/ 7/
4024 7/
M17/111-RG303
M17/170-00001∅
MIL-PRF-39012/55H
w/AMENDMENT 2
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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 i ns tallation only. They will not be stocked or acquired by the
Government.
^ The material of the item shall b e the same mater ial as the item bei ng r eplaced. 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 connector s manufactured prior to 3 Apr il 1987 that are in s tock or
distribution and were prev i ously qualified and marked with the old PIN shall also b e considered acceptable for
Government us e until stock is purged.
^ The material of the item shall b e the same mater ial as the item bei ng r eplaced. Example: 55B3011
replaces 55-3011.
MIL-PRF-39012/55H
w/AMENDMENT 2
14
Amendment notati ons. The margins of this specification are marked with vertical li nes t o i ndicate
modifications generated by t his amendm ent . Thi s wa s done as a convenience only and the
Government as sumes no liability whatsoever for any inaccuracies in these not ations. Bidders and
contractors are cauti oned to evaluate t he requirements of t hi s doc um ent based on the entire cont ent
irrespective of the marginal not ations.
Referenced documents. In addition to M IL-PRF-39012, this document references t he following:
ASTM B488
MIL-STD-202-101
MIL-STD-202-106
MIL-STD-202-107
MIL-STD-202-204
MIL-STD-202-213
MIL-STD-202-301
MIL-STD-202-302
MIL-STD-348
SAE-AMS2700
SAE-AS39029
MIL-DTL-22520
FED-STD-H28
CONCLUDING MATERIAL
Custodians: P reparing activity:
Army - CR DLA - CC
Navy - EC
Air Force - 85 (Project 5935-2017-110)
DLA - CC
Review activities:
Army - AR, AT, EA, MI
Navy - AS, MC, OS, SH
Air Force – 99
NOTE: T he activities listed above were interested in this document as of the date of this document.
Since organizations and responsibiliti es can change, you should verify the curre ncy of the information
above using the A S SIST Online database at https://assist.dla.mil .