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Radiall SMPM Connector Offers Improved Insulator Based On Victrex PEEK Polymer

  • Friday, 1st June 2012
  • 0 comments
  • Reading time: about 2 minutes

Radiall have designed a new insulator for their SMPM snap-on connector to increase performance.

The snap-on connectors are designed to be highly reliable and durable in military and airborne telecommunications applications such as antennas and radar, however, traditional PTFE machined insulators were contributing to poor connectivity issues, reducing the performance of the overall connector. The poor connectivity was due to the snap-on part experiencing creep and deforming over multiple uses.

Radiall explains their solution was to mould a new ultra-miniature insulator based on Victrex PEEK polymer, and this has now been implemented on most SMPM cable and receptacle connectors. This insulator is less than 2.0mm (0.079in) in diameter, and its shape has been optimised using advanced simulation software to provide superior creep resistance, and therefore excellent performance properties that have proven to be more consistent than PTFE. Radiall explains an additional benefit is that SMPM connectors using the Victrex PEEK-based insulator are much less likely to experience mechanical stress and overheating during soldering and assembly.

According to Radiall, the main advantages of SMPM connectors are their relatively small size and high operating frequency, as compared with similar push-on or blind-mate connector series. Radiall say their SMPM connectors meet and exceed the MIL-STD-348 standard. They are rated for an impedance of 50 ohms and operate in a frequency range up to 65GHz. The connector body is composed of beryllium copper or stainless steel, and the series is available with either a smooth bore or full detent interface.


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