You are buying 1pc of Emerson Johnson High Frequency End Launch SMA Jack PC Mount 15 mil pin, PN: 142-0761-871, DC-26.5 GHz

High Frequency SMA End Launch Connectors For Microwave PC Board Substrates

The Johnson® Patented High Frequency End Launch connectors are used to transition microwave energy from coaxial to planar
transmission line structures. These patented connectors provide a unique solution for microwave engineers who fabricate circuit
designs on very thin high frequency board substrates. The in-line connector design minimizes reflections as compared to a rightangle (perpendicular) pc mount transition.

The Johnson® High Frequency End Launch connector is designed to attach directly to a high frequency coplanar waveguide
(CPW) circuit board transmission line, although other lines such as microstrip can be used with good results. These connectors
can be used on high frequency PC board substrate layers as thin as 8 mils, and operate at frequencies up to 26.5 GHz

This connector is an economical alternative to other high frequency designs in the industry. This patented design differentiates itself from
other launch connectors:
• Design of the connector is self contained, no external mounting screws, adapter sections, spring clips, etc. are required for assembly
to the circuit board.
• Center contact pin does not require special orientation to the surface of the circuit board. The center contact is mechanically
captivated and optimized to maintain proper impedance while withstanding torque and axial force stress.
• Output coax of the connector at board launch is sized appropriately to match the thickness of the high frequency board substrate.
The output coax section extends well within the connector while maintaining constant inner and outer coaxial diameters.
• Signal side grounding legs of the connector are spaced close enough to keep grounding paths short, but far enough apart to maintain
constant impedance in the launch transition area.
• Signal side grounding legs and GCPW geometry control radiation, no additional shielding is required to prevent signal cross-talk
effects in the transition area. The launch transition is effectively isolated from adjacent transmission lines in the signal plane.
• Connector is not locked into position when placed on the circuit board. Intentional floating design allows proper alignment in X, Y
and Z, minimizing discontinuities due to manufacturing tolerances.
• The new distinctive through hole mounting technique allows the use of one connector with varying circuit board thicknesses. The
connectors are also available in a traditional straddle mount end launch design, which was pioneered by Johnson - Cinch Connectivity
 Solutions over 20 years ago.
• A small amount of PTFE insulation projects from the rear mating plane of the connector, acting as a seal when soldering the center
conductor pin to the trace. The connector is held against the circuit board edge during the soldering process, compressing the PTFE
insulation. This effectively creates a barrier between the inner and outer conductors, preventing the bridging of solder.
• Appropriate sized connectors do not require additional compensation to standard coplanar or microstrip matched impedance line
geometries. Transition can be fine-tuned by pulling the trace back a slight amount from the board edge.

Applications:
Cellular Linear Power Amplifiers
• Broadband MMIC Power Amplifiers
• Microwave Filters, Mixers and Combiners
• Wireless Infrastructure Antennas
• DBS Low-Noise Block Down Converters
• Remote Sensing and Metering
• Global Positioning Satellite Antennas
• Phased Array Antennas
• Radar Systems
• High Speed Routers and Switches
• Automated Test Equipment
• RF Identification Tags