SMB & SMC Connectors
General Description
Delta SMB connectors are subminiature, 50
Ω
impedance connectors with snap-on coupling. They are best suited for
use with cables in the range of .070" to .120" diameter, such as RG-178 and RG-316/U.
Delta SMC connectors (page 4) are similar in size and construction to SMB series, but employ #10–32 threaded coupling,
and have a higher upper frequency limit than SMB.
All Delta SMB and SMC connectors are available with gold-plated bodies, or with nickel-plated bodies for economy.
Adapters between SMB and other series
can be found in the Between Series Catalog.
As with our other connector series, Delta’s
customer-driven design
results in SMB and SMC series connectors with practical
and unique features that make your design and assembly process easier. Some of these include:
•
SMB
PressMount
receptacles (page 3) mount securely in a single round hole, saving space on your components and
reducing your housing fabrication costs.
•
SMB and SMC panel receptacles with flange sizes to match the same hole pattern as standard SMA connectors, letting
you drill one hole pattern and mount SMB, SMC, BNC, N, SMA, or TNC series connectors as needed.
Our SMB and SMC series product line is still growing, so please call if you don’t see what you need.
SMB Configurations
Straight Cable Plugs ............................................1
Right Angle Cable Plugs.....................................1
Bulkhead Cable Jacks ..........................................1
Bulkhead Jack Receptacles................................2
Panel Jack Receptacles (square flange) ........2
PressMount receptacles .....................................3
Printed-Circuit Board Receptacles ..................3
SMC Configurations
Straight Cable Plugs ..............................................4
Right Angle Cable Plugs........................................4
Bulkhead Cable Jacks ............................................4
Bulkhead Jack Receptacles...................................5
Panel Jack Receptacles (square flange) ...........5
Printed-Circuit Board Receptacles .....................5
SMB & SMC Specifications*
SMB Interfaces**
Reference Plane
.141
min.
Plug
.064
max.
.146 max.
.019/.021
Jack
.117 max.
Reference
Plane
.052 min.
.081
max.
.007/.037
.007min.
.082 min.
.000 min.
.007 max.
.131/.141
.065
min.
Electrical:
Nominal Impedance:
50 ohms.
Frequency Range: SMB:
DC–4 GHz.
SMC:
DC–10 GHz.
Voltage Rating:
250 volts RMS (when used with RG-178-
class cables); 335 volts RMS (when used
with RG-316-class cables).
Dielectric Withstanding
Voltage
: 750 volts RMS (when used with RG-178-class
cables); 1,000 volts RMS (when used with
RG-316-class cables).
Insulation Resistance:
1,000 megohms.
Materials/Finishes:
Insulators:
Teflon per ASTM D1710.
Male Contacts:
Brass per ASTM B16.
Female Contacts:
Beryllium Copper per ASTM B196.
Contact Plating
: Gold per MIL-DTL-45204.
Gaskets:
Silicone rubber per ZZ-R-765, Class II, Grade 50.
Other Metal Parts:
Brass per ASTM B16, plated:
Gold per MIL-DTL-45208, or
Nickel per AMS-QQ-N-290.
All other specifications are in accordance with the
latest issues of MIL-PRF-39012, or MIL-A-55339, or
other applicable MIL specifications, and interfaces
are in accordance with MIL-STD-348.
*These specifications are typical and may not
apply to all connectors. Detailed specifications for
individual connectors are available on request.
SMC Interfaces**
Reference Plane
.233 max.
Plug
.147 min.
Jack
.123/.133
.146 max.
.019/.021
Reference Plane
.234 min.
.081 max.
.082 min.
.190-32 UNEF-2B;
.110 min.
.134
thread length
max.
.000 min.
.024 min.
.084 max.
.134 min.
.190-32 UNEF-2A;
min. 2 complete
threads
.122 max.
**Some proportions altered to illustrate detail.
1
Delta Electronics Mfg. Corp.
deltarf.com
978-927-1060
sales@deltarf.com
SMB Receptacles
Printed-Circuit Board Receptacles
.312
Figure 1
.040
sq. typ.
hex
C
.038
dia.
.040
Figure 2
.312
hex
sq. typ.
.038
dia.
C
B
.200
typ.
B
A
Max.
Board
.100
.100
.100
.100
.200
A
typ.
Figure
1
1
2
2
A
.300
.300
.590
.590
Dimensions
B
.060
.060
.375
.375
C
.155
.155
.155
.155
Mounting
Figure
PCB06
PCB06
PCB06
PCB06
Plating
Body
Contact
Gold
Nickel
Gold
Nickel
Gold
Gold
Gold
Gold
( C)
( C)
( C)
( C)
Delta P/N
2468000G001-000
2468000N001-000
2470000G00E-000
2470000N00E-000
Press Mount Receptacles
Delta PressMount Receptacles
Component housing
These connectors eliminate the need for complicated
mounting hole patterns and mounting hardware.
They are simply pressed into a single through hole,
and the precisely-engineered knurled mounting section
provides retention strength far greater than normal
mating and unmating forces. An integral shoulder
provides a positive stop when mounting.
PressMounts are available for a wide variety of Delta
connector series, and can be used in packages as small
as the outer diameter of the connector body.
Component housing
Internal
Circuitry
Front mount
Internal
Circuitry
Rear mount
.300
dia.
A
B
dia. over knurl
dia.
.195
A
dia.
.062
.060
.275
dia.
.270
.115
.115
.265
dia.
B
dia.
.030
.100
.240
Figure 2
.070
dia. over knurl
.186
(Post contact, front mount,
stainless steel body)
Figure 1
(Post contact, rear mount,
brass body)
Figure
1
2
Dimensions
A
B
.062
.500
.050
.060
Min.
Panel
.100
.062
Mounting
Hole
.267 ±.001 dia.
.182 ±.001 dia.
Plating
Body
Passivated
Gold
Contact
Gold
Gold
( C)
( C)
Delta P/N
2420000K911-001
2421000G911-000
•
See page 208 for mounting dimensions.
•
(C) in contact plating column indicates captive contact.
4
Delta Electronics Mfg. Corp.
deltarf.com
978-927-1060
sales@deltarf.com
Embedded System
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