SMP Connectors
Table of Content
Connectivity for
Business-Critical Continuity
Table of Contents
PAGE
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
Mounting Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-12
Assembly Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . .14-18
Competitor Cross Reference . . . . . . . . . . . . . . . . . . . . . . .19
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Connectivity for
Business-Critical Continuity
SMP Connectors
Introduction
SMP Blind-Mate Connectors
Emerson’s new
Johnson
®
line of
SMP Blind-Mate Connectors
offers our customers a Micro-Miniature,
Slide-On/Snap-On Interconnect System that aid’s in the design ofhigh-density packaging as well as axial and
radial misalignment issues.
The
SMP
Interface offers superior performance up to 40 GHz and is compatible with all SMP and
GPO
®
Connectors. They offer high electrical reliability where extreme shock and vibration condition’s are experienced.
Applications (Military and Commercial)
• Phased Arrays
• Communication
Equipment
•Ground Radar
• Active Antennas
• Airborne Radar
• Satellites
•Shipborne Radar
• Hi-Density Modular
Packaging
• Axial/ Radial
Misalignment
Solution
s
Markets
• Aerospace
• Telecom
• Broadband
• Defense
• Instrumentation
• Microwave
Transmission Options
•
•
•
•
Box-to-Box
Cable-to-Board
Board-to-Board
Cable-to-Panel-to-Board
*GPO
®
is a registered trademark of Corning Gilbert.
3
SMP Connectors
Introduction
Connectivity for
Business-Critical Continuity
Description
One of the key benefits of the SMP connector interface is its use in high frequency blind-mate applications. The
design of the SMP bullet and shroud system allows for both axial and radial misalignment. The basic system is
comprised of an inner “bullet” adapter, and two outer receptacles called “shrouds”. The bullet provides a
flexible link between the shroud connections.
In blind-mate applications, one shroud connector will be typically specified as a snap-on interface and the other
as a slide-on. This ensures that the bullet adapter remains fixed in the same shroud connector when the
connection is disengaged.
The two snap-on interfaces Full Detent (FD) and Limited Detent (LD) each have different engage and disengage
coupling forces. The LD is typically selected as the snap-on interface in PCB mount or blind-mate applications,
while the FD is mainly used for cabled connections where higher retention forces are required.
The two slide-on interfaces Smooth Bore (SM) and Catcher’s Mit (CM) allow for reduced connection forces as
compared to the snap-on versions. The push-on interface creates a sliding connection that does not physically
locate the mating reference planes, allowing for axial and radial misalignment. Both the SM and CM have the
same engage/disengage forces; however the CM is typically specified as the shroud configuration in blind-mate
applications as its generous lead-in chamfer helps capture and guide the bullet into place.
Radial Misalignment
Axial Misalignment
Bullet Length
Shroud
4
Connectivity for
Business-Critical Continuity
SMP Connectors
Specifications
ELECTRICAL SPECIFICATIONS
Impedance:
50 Ohms
Frequency Range:
Bullet Adapter (.254 length), Semi-Rigid Straight Cabled Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-40 GHz
All other In-Series Adapters, Semi-Rigid Right Angle Cabled Connectors,
Field Replaceable Connectors, End Launch Connectors, Hermetic Feedthroughs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-18 GHz
PC Mount Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0-12 GHz
VSWR:
(maximum)
0-18 GHz 18-23 GHz
Bullet Adapter (.254 length) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.10
1.15
0-18 GHz
Semi-Rigid Straight Cabled Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
0-4 GHz
All other In-Series Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.10
26.5-40 GHz
1.70
26.5-40 GH
1.70
12-18 GHz
1.20
0-18 GHz
Semi-Rigid Right Angle Cabled Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.20
0-18 GHz
Field Replaceable Connectors (typical, measured back to back with seal pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.15
Un-cabled Connectors (dependant on application) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Not Applicable
23-26.5 GHz
1.30
18-26.5 GHz
1.35
4-12 GHz
1.15
Insertion Loss:
(dB maximum, tested at 10 GHz)
In-Series Adapters, Field Replaceable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10 √ F (GHz)
Semi-Rigid Cabled Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.12 √ F (GHz)
All other Un-cabled Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Not Applicable
Working Voltage:
335 Vrms maximum at sea level, 65 Vrms maximum at 70,000 feet
Dielectric Withstanding:
Voltage: 500 Vrms minimum at sea level
RF High Potential Withstanding Voltage:
325 Vrms minimum at sea level, tested at 4 and 7 MHz
Corona Level:
190 Vrms minimum at 70,000 feet
Contact Resistance:
(milliohms maximum initial, not applicable after environmental testing)
Center Contact (Connectors and Adapters) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.0
Outer Contact (Connectors and Adapters) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0
Cable Shield to Body (Semi-Rigid Cabled Connectors Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5
Insulation Resistance:
5000 megohms minimum
RF Leakage:
(dB typical, tested at 2.5 GHz)
Cabled and Field Replaceable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -80
In-Series Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65
All other Un-cabled Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Not Applicable
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