Cannon 50 Ohm Connectors
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
connect/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
connectors for automotive applications.
SMB / SMC
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)
MATING INTERFACES
1,63
(.064)
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 mm (inch)
Specifications and dimensions subject to change
2) All undimensioned pictorial
representations are for reference
purposes only.
3) Slide-on versions of most SMB
female styles, prefix 052, are available.
For slide-on male interconnection use
male SMB (snap-on type).
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Cannon 50 Ohm Connectors
SPECIFICATIONS
ELECTRICAL
Impedance
Frequency Range
Voltage Rating
Insulation Resistance
Contact resistance
50Ω
SMB = 0 to 4.0 GHz. SMC = 0 to 12.4 GHz
SMB / SMC
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
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)
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
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:
Beryllium Copper, heat treated. Insulators: PTFE. Lockwashers: Phosphor Bronze. Crimp
Ferrule: Annealed copper alloy. Gaskets: Silicone rubber
Finish/Plating
Center Contacts: Gold plated. Other Metal Parts: Gold plated or nickel plated (as
specified) 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
contacts 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 mm (inch)
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
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Cannon 50 Ohm Connectors
STRAIGHT PLUGS AND JACKS
Straight Crimp Plug
Part Number
B51 - 024 - 0000220
B51 - 024 - 3196220
B51 - 024 - 9399220
Cable Numbers
RG174/U, 316/U
RG178/U, 196/U
RD316, 179
5,56
(.219)
A/F HEX
5,56
(.219)
A/F 2 FLATS
SMB
SMB connectors have solder center contacts.
25,15
(.990)
Assembly Instructions BAI-003 (Page 50)
28,06
(1.125)
10,80
(.425)
Straight Crimp Bulkhead Jack
Part Number
051 - 027 - 0000220
051 - 027 - 3196220
051 - 027 - 9399220
Cable Numbers
RG174/U, 316/U
RG178/U, 196/U
RD316, 179
5,56
(.219)
A/F HEX
6,35
(.250)
A/F HEX
Mounting Plan V (Page 40)
Assembly Instructions BAI-003 (Page 50)
RIGHT ANGLE PLUGS
Right Angle Crimp Plug
Part Number
B51 - 328 - 3188220
B51 - 328 - 3196220
B51 - 328 - 9399220
B51 - 328 - 9019AU0
Cable Numbers
RG174/U, 316/U
RG178/U, 196/U
RD316, 179
BT3002, T2C75024
16,97
(.668)
6,43
(.253)
12,83
(.505)
8,74
(.344)
REF
PLANE
IN-SERIES ADAPTORS
Jack to Jack Adaptor, Bulkhead Mounting
Part Number
051 - 075 - 0000220
Assembly Instructions BAI-015 (Page 49)
17,05
(.671)
10,09
(.397)
6,35
(.250)
A/F HEX
Dimensions shown in mm (inch)
Specifications and dimensions subject to change
Mounting Plan V (Page 40)
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Cannon 50 Ohm Connectors
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
Mounting Plan V (Page 40)
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
Mounting Plan V (Page 40)
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
Mounting Plan V (Page 40)
Dimensions shown in mm (inch)
Specifications and dimensions subject to change
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Cannon 50 Ohm Connectors
SMB
PRINTED CIRCUIT BOARD JACKS
SMB PCB preferred styles feature stepped legs. This allows the
jacks to be raised from the surface of the PCB, thereby
preventing the accumulation of soldering fluids and foreign
bodies. A single piece conductor overcomes the problem of
internal joint separation during continuous wave /
flow soldering operations.
Straight PCB Jack, 1,00 (.039) sq Legs
Part Number
B51 - 351 - 0000220
3,99
(.157)
Ø1,00
(.039)
6,41
(.252)
7,49
(.295)
3,99
(.157)
Ø1,00
(.039)
6,41
(.252)
7,49
(.295)
1,00
(.039)
4 POSNS
0,61
(.024)
Mounting Plan A (Page 40)
Straight PCB Jack, 0,81 (.032) sq Legs
Part Number
0,81
(.032)
4 POSNS
0,61
(.024)
Mounting Plan B (Page 40)
B51 - 051 - 9029220
13,84
(.545)
10,64
(.419)
8,69
(.342) 5,56
(.219)
Right Angle PCB Jack, 1,00 (.039) sq Legs
Part Number
B51 - 053 - 0000220
3,94
(.155)
0.61
(.024)
Ø1,00
(.039)
6,41
(.252)
1,00
(.039)
4 POSNS
Mounting Plan A (Page 40)
13,84
(.545)
10,64
(.419)
Right Angle PCB Jack, 0,81 (.032) sq Legs
Part Number
B51 - 053 - 9029220
8,69
(.342) 5,56
(.219)
3,94
(.155)
0.61
(.024)
Ø1,00
(.039)
6,41
(.252)
0,81
(.032)
4 POSNS
Dimensions shown in mm (inch)
Specifications and dimensions subject to change
Mounting Plan B (Page 40)
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