140-0000-957
140-0000-957 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
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140-0000-957 |
140-0000-957 (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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