RF Coax Connectors
SMB Connectors
Product Facts
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SMB offers snap-fit coupling
for quick connect/disconnect
Choice of Commercial or
High Rel Connectors
50 and 75
Ω
MIL-Type
connectors available
Straight plugs and jacks are
completely crimp terminated
Fast easy cable assembly
Low VSWR
Standard military, commer-
cial or Tyco Electronics
tooling
Listed under the Component
Program of Underwriters
Laboratories Inc.,
File No. E81956
R
SMB Connectors are avail-
able in commercial and
high rel versions. They are
ideally suited for circuit
miniaturization and are
offered in a wide range of
configurations including
plugs, right-angle plugs,
jacks, bulkhead jacks and
adapters, as well as printed
circuit board and solder
jacks.
Termination costs are kept
to a minimum using plugs
and jacks with a crimp cen-
ter contact and hex crimp
outer braid. Both hand held
tooling and pneumatic
bench-mounted tooling is
available. Easily assembled
right-angle plugs have a
hex crimp on the outer
braid ferrule and bifurcated
solder center contacts.
Tyco Electronics’ 75 Ohm BT
43 SMB Connectors feature
unique spring mating with
snap-fit couplings for quick
connect/disconnect. These
connectors are designed
to be intermateable with
75 Ohm SMB MIL-C-39012
connectors. They also fea-
ture reliable dual crimp
cable terminations.
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PC Board soldered connec-
tors are recognized under
the Component Program of
Underwriters
Laboratories Inc.,
File No. E81956
R
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Certified by Canadian
Standards
Association
File No. LR 7189
R
Packaging
— All connectors are
packaged individually unless otherwise
noted under the “Military No. and/or
Comments” column in the connector
specifications chart.
Between Series Adapters
For SMB Between Series Adapters,
please see pages 251-260.
176
Catalog 1307191
Revised 3-07
www.tycoelectronics.com
Dimensions are in millimeters
and inches unless otherwise
specified. Values in brackets
are standard equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-8706-080-208
RF Coax Connectors
SMB Connector Specifications
Electrical Characteristics
Impedance
— 50 ohms and 75 ohms, nominal
Frequency Range
— 0 to 4.0 GHz
Voltage Rating (VRMS)
—
Sea Level
70,000 Feet
50 ohm connectors for RG 178/U series cable
300
75
50 ohm connectors for RG 316/U series cable
400
100
75 ohm connectors for RG 179/U series cable
300
75
75 ohm connectors for RG 195/U series cable
500
125
Insulations Resistance
— 1000 megohms min.
Contact Resistance
— (milliohms max.)
After
Initial
Environment
Center contact
6.0
8.0
Outer contact
1.0
1.5
Braid to body
1.0
N/A
Contact Current Rating
— 1.5 amps DC max.
Voltage Standing Wave Ratio
(VSWR0 —
to 4.0 GHz or 80% of upper cutoff frequency of the cable, whichever is lower.
Mating Engagement
Straight
Right-Angle
1.30 + .04F
1.45 + .06F
1.25 + .04F
1.35 + .04F
Environmental Characteristics
Temperature Rating
— –65°C to +165°C
Corrosion (salt spray)
— MIL-STD-202, Method 101, test condition B, 5% salt
solution
Vibration High Frequency
— MIL-STD-202, Method 204, test condition B
(15 G’s)
Shock
— MIL-STD-202, Method 213, test condition B, 75 G’s at 6 milliseconds,
1
⁄
2
sine
Thermal Shock
— MIL-STD-202, Method 107, test condition B, except high tem-
perature shall be +85°C. High temperature shall be +200°C for connectors using
200°C cables.
Moisture Resistance
— MIL-STD-202, Method 106, when interface gasket is
used. No measurements of high humidity. Insulation resistance shall be 200
megohms minimum within five minutes after removal from humidity.
Durability Test
— Conducted per MIL-C-39012 Reg. Para. 3.15, Method Para. 4.6.12
Materials
Body, Body Components and Male Contacts
— Brass, half hard, per QQ-B-626,
Alloy 360, Zinc per QQ-Z-363
Female Contacts
— Beryllium copper per QQ-C-530, heat treated per MIL-H-7199
Insulators
— TFE fluorocarbon per ASTM D 1710, Type 1, Grade 1
Lockwashers
— Phosphor bronze per QQ-B-750
Crimp Ferrule
— Annealed copper alloy per WW-T-799
Gaskets
— Silicone rubber per ZZ-R-765, Class 11B, Grade 65-75
Cable
RG 178/U Series
RG 316/U Series
F=GHz, does not apply to 75 ohm connectors.
RF High Potential Withstanding Voltage
Frequency
— 5 MHZ
Leakage Current
— N/A
50 ohm connectors for RG 178/U series cable
50 ohm connectors for RG 316/U series cable
75 ohm connectors for RG 179/U series cable
75 ohm connectors for RG 195/U series cable
RF Leakage
— –55 dB min. at 2-3 GHz
Insertion Loss
— .30dB max. at 3 GHz
Plating
675 VRMS
950 VRMS
950 VRMS
1225 VRMS
Center Contacts
— 0.00127 [.000050] min. Gold per MIL-G-452048 Type 1,
Grade C, Class 1, over 0.00254 [.000100] min. nickel per QQ-N-290
Other Metal Parts
— Gold, Nickel or Solder plated to meet the Finish and
Corrosion requirements of MIL-C-39012
Mechanical Characteristics
Engagement Forces
— 14 lbs. [62.3 N] maximum engagement initially.
After 500 matings, 14 lbs. [62.3 N] maximum engagement and 2 lbs. [8.8 N] minimum
disengagement for all of SMBs.
Cable Attachment
—
Straight Connectors
— Crimp, both center contact and braid
Right-Angle Connectors
— Crimp on braid and bifurcated solder center contact
Durability
— 500 cycles per MIL-C-39012
Contact Captivation
— When captivated, the contacts will withstand 4.0 lbs.
minimum axial force.
Cable Retention
— When properly assembled to the compatible braided coaxial
cable, the retention is equal to the breaking strength of the cable.
Marking
— Per MIL-STD-130
177
Catalog 1307191
Revised 3-07
www.tycoelectronics.com
Dimensions are in millimeters
and inches unless otherwise
specified. Values in brackets
are standard equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-8706-080-208
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