This connector dealt successfully with many of the limitations of the SMA. The first widely used connector in the data world, at least in North America, was the ST, sometimes called Snap and Twist. The polishing process itself is markedly different from those of standard communications connectors and therefore requires some different procedures, tools and films, in order to produce acceptable assemblies.If connectors are not polished within the long side of the length tolerance, one could crash another connector (damage the glass and the polish) or worse, a device like an LED, laser or detector. There is a +/- 3/10000” tolerance on the polished ferrule length. Its screw-threads are not immune to vibration.It is not keyed, which means that there is no easy way to repeat the position of the fiber across multiple matings.It is not friendly to terminate in the field.It is suitable only for multimode and not for single-mode fibers, (issues of both insertions and later, return loss).The SMA was not ideally suited to the emerging use of optical fiber in the communications networks – telephone, cable TV, private data networks – for a number of reasons: The rods were uniformly round enough to place the fiber in the center of the connector and allow for acceptable insertion losses of 1.25 - 2 dB per km at 850 nm. For the smallest sizes, Amphenol developed a unique and patented design that used four tightly machined metal rods in a larger hole in the connector ferrule. In those days, fiber was multimode and the clad diameters were 125 um and up, to 2 um. In addition to conventional custom cable assemblies Intelliconnect's cryogenic cables and components work to 2K (-271.15☌) and are suited to a wide range of applications including quantum computing, test and measurement, instrumentation, medical and material research and cryogenic systems including dilution refrigerators, superconducting magnet systems, low temperature detector systems, infrared array systems.The first connector to be accepted as a widely used standard in the early days of the fiber optic industry, in the late 1970s, was designed by Amphenol in CT as a variation of their coaxial electrical connect known as subminiature assembly, or SMA. Intelliconnect also manufacture a large range of coaxial adaptors to facilitate inter-series connection and gender change etc. Intelliconnect (Europe) manufactures a wide range of standard and custom RF connectors and components, including waterproof and fast turnaround custom designs which are undertaken without NRE charges to their customers. Solderless assembly speeds manufacture and facilitates field replacement in the event of wear or damage to the connector.” Roy Philips, managing Director of Intelliconnect (Europe), said: “SMA connectors have a very wide range of applications and our new solderless connectors provide customers with a very useful alternative to conventional types for assembling connectors to 0.085"(RG405) and 0.141" cables with no loss in performance or reliability. Key features include faster assembly time, high repeatability, guaranteed equivalent performance to solder connection, no special tooling required, cable retention force similar to soldered versions and field replaceable connectivity in the event of wear or damage to the connector. The Intelliconnect stainless-steel solderless 2.9mm and SMA connectors have been designed for applications where reliability, durability, robustness and high-frequency performance are very important. Cryogenic electronics is a fast-growing, cutting-edge market which includes quantum computing, medical and research applications. 085, and 0.141” types not only extends their product rang but also opens up new markets including medical, defence, space, industrial and cryogenics. The arrival of their range of solderless, field-replaceable connectors which provide solderless attachment to semi rigid cables including. Intelliconnect offer a standard range of bulkhead and panel mount connectors, including a waterproof version and right-angle adapters.
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