Johnson SMA Connectors

SMA Self-Fixture End Launch Connectors

An ideal solution for design engineers who are obligated to cut manufacturing costs and complexity out of their circuit board system. For those microwave engineers who are required to transition microwave energy from coaxial to planar transmission line structures on even higher frequency board substrates, Cinch Connectivity Solutions recommends the Johnson line of High Frequency End Launch, Self-Fixture connectors which can operate up to 26.5 GHz with good Return Loss values.

These enhanced end launch connectors properly align and hold the center contact of a coaxial connector to the circuit board plane without the need for special fixtures. This is done with specially designed connector legs that tightly grip a range of substrate thicknesses until the soldering operation to couple the two is complete. Additionally, these connectors feature redesigned contacts and insulator material that work in tangent to form an optimized connection point. While the contact maintains proper impedance under aggressive torque and axial stresses, the insulator acts as a seal by compressing itself into the board edge during soldering. This creates a barrier between the inner and outer conductors and protects against solder bridging

No mounting screws. No adapters. No more aftermarket tools or ad hoc devices on your assembly lines. These unique connectors will overcome the problematic gaps and discontinuities associated with inconsistent soldering process. These connectors can save your products from the poor connections that degrade signal quality and provide optimal Return Loss values between 0–18 GHz.

The High Frequency End Launch connectors work in a similar fashion to the self-fixturing connectors by attaching directly to coplanar waveguide circuit board and operate with respectable Return Loss values up to 26.5 GHz. The in-line connector design minimizes reflections as compared to a right-angle (perpendicular) PC mount transition.

Applications

Automated Test Equipment
Broadband MMIC Power Amplifiers
Cellular Linear Power Amplifiers
DBS Low-Noise Block Down Convertors
Global Positioning Satellite Antennas

GPS and Phased Array Antennas
High Speed Routers and Switches
Microwave Filters, Mixers and Combiners
RFID (Radio Frequency Identification) Tags
Remote Sensing and Metering

Radar Systems
Phased Array Antennas
Wireless Antennas

SMA Quick-Connect Product Family

The Johnson SMA Quick-Connect Plug quickly mates to a standard, threaded SMA Jack receptacle allowing rapid test connections to devices utilizing SMA threaded jacks. SMA electrical performance is not compromised because the connector retains all the benefits of a threaded coaxial coupling. The final connection is a solid metal-to-metal coupling not relying on spring forces to maintain the coupling. This results in a more reliable connection with less signal leakage and a lower VSWR than most push-on connectors. Full Mil-C-39012 electrical compatibility is obtained with a push and twist motion. The knurled thumbnut requires only one half to one full turn to create a solid electromechanical connection. Rapid disconnect is accomplished with a twist and pull motion. The SMA Quick-Connect Plug Adapter converts a standard SMA Plug test cable into a Quick-Connect cable. This makes the testing process more efficient by reducing the time and effort required to connect and disconnect the test cable.