Figure 17: Designers can choose among a wide array of 50 Ω coaxial cables, differing in many electrical and mechanical characteristics. Shown is the attenuation versus frequency—an important specification— for some common standard coaxial cables. (Image source: Würth Elektronik)
Fortunately, cable assemblies are available in many lengths as standard, stocked items for the most common cable and connector types. They also come in custom lengths and connector pairings with fairly short delivery times. Consider, for example, the Würth 65503503530505, a 12 inch/305 mm cable assembly with a straight SMA male plug on each end, using RG-316 coaxial
cable (0.102 in/2.59 mm outside diameter), with heat shrink tubing added over the connector/cable junctions for strain relief and ruggedness (Figure 18). The datasheet for this cable assembly includes comprehensive mechanical and material details and dimensions, as well as guaranteed specifications for VSWR (1.3) and insertion loss (1.2 dB) from DC to 6 GHz. There is also a chart showing
Figure 18: The 65503503530505 is a standard 12-inch coaxial cable assembly using RG-316 cable with straight SMA male plugs on each end; note the strain relief between connector and cable. (Image source: Würth Elektronik)
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