On 3/31/12 1:46 PM, J. Forster wrote:
Remember, there are two varieties of SMA: Those with a gold plated center
pin soldered onto the center conductor and those with a sharpened center
conductor of 0.141 hard line.
The latter are near junk, IMO.
Only if you're planning on multiple mates/demates. The crimp on 0.141
style works fine for the first couple mates. Good inspection and
gaging is needed to make sure you don't get little shreds of copper from
when you sharpen the point, and that your tooling got the length of the
"pin" correct.
It's sort of a "works once" scheme (like those head bolts or piston rod
bolts that you can only torque once. Once stretched, they can't be used
again.)
They're pretty handy when building prototypes. You get your big length
of 141 and your little bending tool, the die set and crimper from Kings,
and you can cable up stuff (once) pretty quickly and neatly.
If you take a cable off, you just throw it away (or cut the connectors
off and use the remaining cable for something new)
But if you're going to take it apart and reassemble it.. yep.. you want
the real captured gold plated machined center pin. I use a lot of the
semi-flexible or "formable" stuff from Tensolite and RF-Coax these days.
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