140-0000-968

140-0000-968 Datasheet


min. or passivated per MIL-F-14072 B EL 300 Contacts Female - beryllium copper per QQ-C-530, gold plated per MIL-G-45204

Part Datasheet
140-0000-968 140-0000-968 140-0000-968 (pdf)
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SMK - 50 Ohm Connectors 2.92mm

INCHES MILLIMETERS CUSTOMER DRAWINGS AVAILABLE UPON REQUEST

Johnson Components

SMK 2.92mm Connectors

The Johnson Components SMK Connector provides an excellent solution for demanding applications requiring high frequency transmission. Although similar to the SMA interface, a smaller internal body diameter 2.92mm and air dielectric provide a higher cutoff frequency and other key advantages
• Precision manufacturing allows superior
electrical performance to 40 GHz.
• Female contacts have a unique three-slot
construction, which enhances connectivity by creating a more rugged connector while reducing the chance of intermittent connections.
• Precise assembly tooling assures excellent, repeatable contact and support bead location on cabled connectors.
• Connector mating interface per MIL-STD-348
• Mating interface control provides consistent electrical performance.
• The plug connector VSWR is Max to 40 GHz and a 12 inch SMK plug to plug cable assembly performs better than VSWR to 40 GHz.
• The Field Replaceable Jacks are teamed with a high quality hermetic seal feed thru for use in sealed circuit modules.
• The SMK plug interface employs more precise dimensions than an SMA and uses a shorter snub nose male pin such that the connector bodies align before the contacts engage.

MATERIAL SPECIFICATIONS Bodies Stainless steel per QQ-B-626, gold plated* per MIL-G-45204
min. or passivated per MIL-F-14072 B EL 300 Contacts Female - beryllium copper per QQ-C-530, gold plated per MIL-G-45204
min. Contact Support Beads PTFE fluorocarbon per ASTM D 1710 and

ASTM D 1457 or modified PPE resin Seal Rings Silicone rubber per ZZ-R-765
* All gold plated par ts include a min. nickel underplate barrier layer.

MECHANICAL RATINGS

Engagement Design MIL-STD-348, Series SMK 2.92mm

Engagement/Disengagement Force 2 inch-pounds maximum

Mating Torque 7 to 10 inch-pounds

Coupling Proof Torque 15 inch-pounds minimum

Coupling Nut Retention 60 pounds minimum

Contact Retention 6 lbs. minimum axial force captivated contacts

Cable Retention:

Axial Force* lbs Torque in-oz
semi-rigid 30
semi-rigid 60
*Or cable breaking strength whichever is less.

Durability 500 cycles minimum

Notes ID of contact shall meet VSWR and connectivity requirements when mated with dia. male pin.

Mating Engagement for SMK 2.92mm Series per MIL-STD-348

Johnson Components
• P.O. Box 1732
• Waseca, MN 56093-0832
• 1-800-247-8256
• Fax 507-833-6287


SMK - 50 Ohm Connectors 2.92mm

INCHES MILLIMETERS CUSTOMER DRAWINGS AVAILABLE UPON REQUEST

ELECTRICAL RATINGS

Impedance 50 ohms

Frequency Range 0-40 GHz

VSWR f = GHz

Semi-rigid straight cabled connectors and adapters Max

Field replaceable see typical return loss graph N/A

Working Voltage Vrms maximum

Connectors for Cable Type

Sea Level 70K Feet
semi-rigid and field replaceable......................... 335
semi-rigid and adapters 500
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Datasheet ID: 140-0000-968 511119