SMB / SMC
Cannon's SMB Snap-on and SMC Screw-on subminiature
coaxial connectors have been specifically engineered for
high performance and high reliability applications in both
military and commercial equipment operating at frequencies
up to 4 GHz (SMB) and 12.4 GHz (SMC).
The Snap-on mating engagement allows a rapid con-
nect/disconnect facility. The Screw-on mating engagement
allows a low VSWR under vibration conditions and a
matched impedance of 50 ohms.
Cannon SMB/SMC connectors are compatible with all
SMB/SMC type connectors conforming with MIL-C-39012, BS
9210, UTE C93 561, UTE C93 562, CECC 22 130 and CECC
22 140.
In addition to this range we also offer FAKRA SMB connec-
tors for automotive applications.
Mating Interfaces
1,63
(.064)
Key Features
• Rapid connect / disconnect (SMB)
• Standoff legs on PCB
• Frequency range to 12.4 GHz (SMC) or
4 GHz (SMB)
• Vibration withstanding design (SMC)
I
RF
SMB (SNAP-ON)
3,45
(.135)
Ø6,61
(.260)
MAX
Ø3,71
(.146)
MAX
REF
PLANE
REF
PLANE
PLUG
5,95
(.234)
A/F HEX
JACK
SMC (SCREW-ON)
10-32, UNF-2A
Ø3,71
(.146)
MAX
REF
PLANE
PLUG
REF
PLANE
JACK
NOTES
1) Inside diameter of female contact to
meet VSWR mating characteristics and
connector durability when mated with
a 0,48 ± 0,53 (.019 ± .021) diameter
male contact.
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
2) All undimensioned pictorial
representations are for reference
purposes only.
3) Slide-on versions of most SMB fe-
male styles, prefix 052, are available.
For slide-on male interconnection use
male SMB (snap-on type).
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I-19
SMB / SMC
Specifications
ELECTRICAL
Impedance
Frequency Range
Voltage Rating
Insulation Resistance
Contact resistance
50Ω
SMB = 0 to 4.0 GHz. SMC = 0 to 12.4 GHz
Connectors for RG196/U series cable: At Sea Level = 300 Vrms. At 21km (70k feet) = 75 Vrms
Connectors for RG188/U series cable: At Sea Level = 400 Vrms. At 21km (70k feet) = 100 Vrms
1000 MΩ minimum
Center Contact = 6.0 m
Ω
maximum initial. 8.0 m
Ω
maximum after environment
Outer Contact = 1.0 m
Ω
maximum initial. 1.5 m
Ω
maximum after environment
Braid to Body = 1.0 m
Ω
maximum
Contact Current Rating
Insertion Loss
RF Leakage
1.5 A dc maximum
0.25 dB maximum @ 4 GHz
SMB = -55 dB minimum @ 2 - 3 GHz
SMC = -60 dB minimum @ 2 - 3 GHz
Connector Configuration
SMB
Cable group
RG196/U Series
RG188/U Series
Straight
1.30 + .04F
1.20 + .04F
Right Angle
1.45 + .06F
1.35 + .04F
Straight
1.25 + .04F
1.20 + .04F
SMC
Right Angle
1.40 + .06F
1.30 + .04F
I
Voltage Standing Wave Ratio (VSWR)
To 10 GHz or 80% of upper cut-off
frequency of the cable, whichever is lower.
Applicable to 50Ω cables only.(F = GHz)
RF
MECHANICAL
Engagement Design
Engagement Forces
SMB per MIL-C-39012, Series SMB. SMC per MIL-C-39012, Series SMC.
SMB: Initial = 62 N (14 lbs.) max. engagement. After 500 matings = 62 N (14 lbs.)
max. engagement and disengagement = 8.9 N (2 lbs.) min. disengagement. SMC:
0.11 Nm (16 in. oz. ) torque max.
Mating Torque
Locknut Torque
Coupling Nut Retention
Materials
SMB: N/A
SMB: N/A
SMC: 0.42 to 0.50 Nm (60 to 70 in.oz)
SMC: 155 N (35 lbs. ) minimum
0.56 to 0.64 Nm (80 to 90 in. oz)
Body, Body Components and Male Contacts: Brass, half hard. Female Contacts: Beryl-
lium Copper, heat treated. Insulators: PTFE. Lockwashers: Phosphor Bronze. Crimp Fer-
rule: Annealed copper alloy. Gaskets: Silicone rubber
Finish/Plating
Center Contacts: Gold plated. Other Metal Parts: Gold plated or nickel plated (as speci-
fied) to meet the finish and corrosion requirements of MIL-C-39012
-65° C to 165° C
MIL-STD-202, Method 101, test condition B, 5% salt solution
MIL-STD-202, Method 204, SMB: test condition B (15 G's). SMC: test condition D (20 G’s)
MIL-STD-202, Method 213, SMB: test condition B, 75 G's @ 6 milliseconds, 1/2 sine.
SMC: test condition C, 100 G's @ 6 milliseconds, 1/2 sine.
MIL-STD-202, Method 107, test condition B, except high temperature shall be 85º C.
High temperature shall be 200ºC for connectors using 200ºC cables.
MIL-STD-202, Method 106, when interface gasket is used. No measurement at high humidity.
Insulation resistance shall be 200 MΩ minimum within five minutes after removal from humidity.
500 matings minimum
Unless otherwise specified, all connectors feature captivated contacts. When captivated the con-
tacts will withstand 17,8 N (4 lbs.) minimum axial force. CECC 22 130 = 10 N(2.25 lb.)
When properly assembled to the compatible single braided coaxial cable, the retention
is equal to the breaking strength of the cable.
The following part number suffices can be specified for SMB/SMC Connectors:
..... 220
..... 910
..... C90
gold body
nickel body
nickel body
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
ENVIRONMENTAL
Temperature Rating
Corrosion (salt spray)
Vibration, High Frequency
Shock
Thermal Shock
Moisture Resistance
GENERAL
Connector Durability
Contact Captivation
Cable Retention
Body Plating Options
I-20
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SMB
BULKHEAD JACKS
Straight Bulkhead Jack, Solder Pot,
Mounting Nut Outside Panel
Part Number
051 - 043 - 0000220
15,10
(.594)
10,80
(.425)
6,35
(.250)
A/F HEX
6,35
(.250)
A/F HEX
I
RF
Straight Bulkhead Jack, Solder Pot,
Mounting Nut Inside Panel
Part Number
051 - 045 - 0000220
15,34
(.603)
2,81
(.110)
6,35
(.250)
A/F HEX
REF
PLANE
14,96
(.589)
Right Angle Bulkhead Jack, Solder Pot,
Mounting Nut Inside Panel
Part Number
051 - 047 - 0000220
19,35
(.762)
9,17
(.361)
5,72
(.225)
6,35
(.250)
A/F HEX
Dimensions shown in inches (mm)
Specifications and dimensions subject to change
I-22
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Embedded System
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