SMA
Amphenol
®
SMA
Description
SMA is an acronym for SubMinature version A and
was developed in the 1960’s. It uses a threaded
interface.
50 ohm SMA connectors are semi-precision, sub-
miniature units which provide excellent electrical
performance from DC to 18 Ghz. These high perfor-
mance connectors are compact in size and
mechanically have outstanding durability.
Built in accordance with MIL-C-39012 and CECC
22110/111. They can be mated with all connectors
which meet these spec mating diameters regardless
of manufacturer.
Stainless Steel
Features/Benefits
• Broadband performance DC to 18 GHz with low
reflection stainless steel construction with 1/4-
36 threaded coupling offers high performance
in a compact design.
• Low cost Commercial Grade (Brass SMA)
available in nickel or gold plating, flexible
provides approximately 30% reduction in cost
with 250 mating cycles.
• Various flexible cable groups including: .086
and .141 semi-rigid allows customer flexibility
in their design with a durable connector.
Specifications
Plugs
Jacks
Receptacles
In-Series Adapters
56-57
58-61
62-63
64-73
74-75
Brass
Specifications
Plugs, Jacks
Receptacles
76
77-78
79-82
Application
• Base Stations
• Cable Assemblies
• Components
• Instrumentation
• Mil/Aero
• PC/LAN
• Process Controls
• Telecom
Phase Adjustable
Connectors
Specifications
Plugs and Adapters
83
84
Amphenol Corporation Tel: 800-627-7100
www.amphenolrf.com
55
SMA
Specifications
Amphenol
®
ELECTRICAL
Impedance
Frequency range
50 ohms
.141" & .085" O.D.
copper jacket semi-
rigid cable. 0-18GHz.
Flexible cables:
0-12.4 GHz.
Voltage rating
RG-55, 58,141,142, 223,
303: 500 volts peak
RG-122,, 174, 188, 316:,
375 volts peak
Dielectric
withstanding voltage
.141" & RG-58 group:
1,000 VRMS.
.085" & RG-316 group:
750 VRMS.
VSWR
(straight connectors)
.141" O.D. copper
jacket cable:
1.05 + .005 f (GHz)
RG-55 group:
1.15 + .011 f (GHz)
RG-122 group:
1.15 + .02 f (GHz)
RG-178 group:
1.20 + .025 f (GHz)
(angle connectors)
.141" O.D. copper
jacket cable:
1.10 + .01 f (GHz)
RG-55 group:
1.15 + .02 f (GHz)
RG-122 group:
1.15 + .03 f (GHz)
RG-178 group:
1.20 + .03 f (GHz)
Contact resistance
Center: 2.0 milliohms
Body: 2.0 milliohms
Braid to body: 0.5
milliohms
Insulation resistance:
RF leakage
Insertion loss:
5000 megohms
-60 dB
minimum
.03
√
f(GHz) dB max.
ENVIRONMENTAL
Temperature range
Thermal shock
-65°C to + 165°C
MIL-Std. 202 method
107 (test cond. B)
except high temp test
@ + 200°C
MIL-Std. 202 method
204 (test cond. D)
MIL-Std. 202 method
213 (test cond. I)
No discontinuity
permitted.
MIL-Std. 202 method
101 (test cond. B)
5% salt solution.
MIL-Std. 202 method
106, except step 7b
(vibration) omitted,
and high humidity
measurements do not
apply.
Crimp type: heat
shrink tubing
Solder type: silicone
rubber gaskets
Altitude
MIL-Std. 202 method
105 (test cond. C), no
corona at 70,000 ft.
.141" & RG-55 group:
250 VRMS.
.085" & RG-122 group:
190 VRMS.
MATERIAL
Bodies, coupling nuts, Non-magnetic stainless
other metal parts
steel per QQ-S-764,
(except as noted)
Type 303.
Contacts
Beryllium copper per
QQ-C-530, heat treated
per MIL-H-7199.
.00005" min. gold per
MIL-G-45204, type 1,
grade C. Gold over
nickel unless otherwise
requested.
Gold plated or
passivated to meet the
finish and corrosion
requirements of MIL-C-
39012.
TFE fluorocarbon per
ASTM D1457.
Silicone rubber, per
MIL-R-5847 and ZZ-R-
765. class IIB, grade
65-75.
Stainless steel, internal-
tooth supplied with all
bulkhead mounted
connectors.
Seamless copper tubing
alloy # 122 (DHP), hard
drawn to Rockwell 58-77
on 30-T scale per
ASTM B75.
Vibration
Shock
Plating:
Center contacts.
Corrosion
Plating:
Other metal parts
Moisture resistance
Insulators
Gaskets
Weatherproofing
Lockwashers
Crimp ferrules
MILITARY SPECIFICATIONS
MECHANICAL
Mating
Mating torque
.250-36 threaded
coupling
Minimum:
2 inch pounds
22 N.cm
Recommended:
7 to 10 inch pounds
80-110 N.cm
Maximum:
15 inch pounds
170 N.cm
Coupling nut
retention
Axial force:
100 lbs. min., 300 N.cm
Torque: 15 in. lbs. min.
76 N.cm
Jacks: N/A
Connector affixment
to cable
Cable affixment to
center contact
Contact captivation
Cable retention
Crimp types,
solder types
Solder, except as
noted
All types, except
as noted
Crimp type for RG-58,
.141, 303=60 lbs min.;
for RG-55,142, 223 =
80 lbs min. 400 N.cm
500 mating and
unmating cycles @
12 cycles per min.
MIL-C-39012 &
MIL-C-83517 SMA
specification sheets
As applicable
Connector durability
NOTE: These characteristics are typical and may
not apply to all connectors.
Amphenol Corporation Tel: 800-627-7100
www.amphenolrf.com
56
SMA
Amphenol
®
SMA
Plug
Jack
2.56/3.63
.135 MAX
.130 MIN
.015/.045
.074/.078
.015/.045
.218 MIN
.170 MIN
FULL THD
6.35/6.73
ø.250 MIN
6.53/6.59
ø.1808 MAX
ø
.051/.049
CONTACT
ø
.216
.208
ø
.1810 MIN
.250-36UNS-2B
.250-36UNS-2A
.115
.000/.010
SMA JACK
.010 MAX
.000 MIN
RECESS
SMA PLUG
.1.91/2.56
100 MAX
.015 MAX
ø 0.90
ø 0.96
.000 MAX
PROJECTION
REF PLANE
.015 MIN
.050 MIN
.000 MAX
PROJECTION
CECC = Cenelec Electronic Components
Committee in Europe
SMA
Amphenol Corporation Tel: 800-627-7100
www.amphenolrf.com
57
SMA
Straight Cable Plugs
Fig. 1
a
.330(8.4)
c
Amphenol
®
Fig. 2
VSWR = 1.35 max.
DC-22GHz
.312(7.92) hex.
.330(8.4)
a
SMA Plugs - Solder to Body
901-9201-2A
for .085" (2.2mm) S/R, RG-405 (M17/133)
Gold Plated Nut [VSWR = 1.07 + .008(GHz) DC-18GHz]
901-9201-2ASF
for .085" (2.2mm) S/R, RG-405 (M17/130)
Gold Plated Passivated Nut
901-9201-1A
for .141" (3.6mm) S/R, RG-402 (M17/130)
Gold Plated Nut, without Contact & Insulator
901-9201-1ASF
for .141" (3.6mm) S/R, RG-402 (M17/130)
Gold Plated Passivated Nut
Fig. 3
VSWR = 1.35 max.
DC-22GHz
a
.330(8.4)
c
coupling nut for
901-9723 is
.280(7.1) long.
.312
(7.92)
hex.
c
retaining "c" ring
for 901-9723 only
SMA Plugs - Solder to Body/
Pre-assembled Factory-Set Interface
901-9723
v
Passivated Nut, 100 piece Bulk Pack
901-9723-10
Passivated Nut, Single Pack
for .085" (2.2mm) S/R, RG-405 (M17/133)
Fig. 4
.050(1.27)
reference plane
.202(.513)
.312
(7.92)
hex.
c
a
.312(7.9) hex nut
901-9808
v
Gold Body, Passivated Nut
901-9808-1
Gold Body and Nut
901-9808-2
Gold Body, Passivated Nut
Preassembled Factory Set Interface
Single Pack
for .141" (3.6mm) S/R , RG-402 (M17/130)
SMA Plugs - Solder to Body/
Pre-assembled Factory-Set Interface
901-9805-HP
Passivated Nut, Single Pack
for .085" (2.2mm) S/R, RG-405 (M17/133)
SMA PLUGS FOR SEMI-RIGID CABLE –
50Ω impedance
Cable
RG-/U
.085" (2.2mm) Semi-Rigid
RG-405 (M17/133)
Cable Attachment
Outer
Inner
Solder
Solder
Solder
Solder
Solder
.141" (3.6mm) Semi-Rigid
RG-402 (M17/130)
Solder
Solder
Solder
Solder
Solder
v
distributor stocked
Solder
Plugable
Plugable
Plugable
Plugable
None
None
Plugable
Plugable
Plugable
Dim. In. (mm)
a
c
.438(11.1)
.400(10.2)
.400(10.2)
.400(10.2)
.531(13.5)
.445(11.3)
.445(11.3)
.438(11.1)
.438(11.1)
.438(11.1)
.090(2.3)
.090(2.3)
.090(2.3)
.090(2.3)
.090(2.3)
.145(3.7)
.145(3.7)
.145(3.7)
.145(3.7)
.145(3.7)
CAI
Plt. Ins.
Construction
Notes
—
—
—
—
—
w/o Cont. & Ins.
v
Amphenol
Number
901-9201-2A
901-9201-2ASF
901-9723
901-9723-10
901-9805-HP
901-9201-1A
v
901-9201-1ASF
901-9808
901-9808-1
901-9808-2
Fig.
1
1
2
2
4
1
1
3
3
3
C47 P10 D1
C48 P10 D1
C48 P10 D1
C48 P11 D1
C48 P11 D1
C50 P14
C50 P14
—
— Gold plated body
❦
C48 P10 D1 Gold plated body
❦
C48 P10 D1 Gold plated body
❦
C48 P10 D1 Gold plated body
❦
❦
passivated nut
Amphenol Corporation Tel: 800-627-7100
www.amphenolrf.com
58
SMA
Straight Cable Plugs
Fig. 1
Fig. 2
Fig. 3
Amphenol
®
SMA
1.50(38.1)
a
.330
(8.4)
c
.312
(7.92)
hex.
c
a
.330
(8.4)
c
a
.725(18.4)
.312(7.92) hex.
heat shrink tubing
.312(7.92) hex.
heat shrink tubing
.250(6.4) hex.
SMA Plug
Braid Solder to Body
Captivated Solder Contact
901-9501-3
for RG-174, 179B, 187A, 188A, 316
SMA Plugs
BeCu Body, Solder to Nut
901-103
•v
for RG-55, 58, 142, 223
901-128-11
•
(M39012/55-4007)
for RG-174, 316
SMA Plugs
Braid Crimp/
Captivated Solder Contact
901-9601-1SF
v
Passivated Body & Nut
for RG-55B, 142B, 223, 400
901-9601-3
v
Gold Plt. Body & Nut
901-9601-3SF
v
Passivated Body & Nut
for RG-174, 179, 187, 188, 316
SMA PLUGS FOR FLEXIBLE CABLE –
50Ω impedance
Cable
RG-/U
55, 58, 141, 142, 223
55B, 142B, 223, 400
174, 179, 187, 188, 316
174, 179B, 187A, 188A, 316
174, 316
Cable Attachment
Outer
Inner
Clamp
Crimp
Crimp
Crimp
Solder
Clamp
Solder
Solder
Solder
Solder
Solder
Solder
Dim. In. (mm)
a
c
.969(24.6)
1.10(28.0)
1.10(28.0)
1.10(28.0)
.690(17.5)
.984(25.0)
.219(5.6)
.220(5.6)
.128(3.3)
.128(3.3)
.128(3.3)
.114(2.9)
CAI
Plt.
Ins.
D1
D1
D1
D1
D1
D1
Construction
Notes
BeCu Body
Captivated Contact
Captivated Contact
Captivated Contact
—
BeCu Body
Mil. No.
39012/
—
—
—
—
—
55-4007
•
Amphenol
Number
•v
901-103
v
901-9601-1SF
v
901-9601-3
v
901-9601-3SF
901-9501-3
901-128-11
Fig.
2
3
3
3
1
2
C43 P9
C56 P12
C56 P9
C56 P12
C46 P11
C44 P9
SMA
• safety wire holes
v
distributor stocked
Amphenol Corporation Tel: 800-627-7100
www.amphenolrf.com
59
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