There's no need to ground the case of a crystal, bear in mind you need to be ordering crystals for micro-controller applications - ones intended for RF use may be overtone crystals.Yes I did use capacitors on All of them I just want to no if any one grounds the case. I use CERAMIC RESONATOR most of the time but I was building a junebug and it uses a 20 mhz crystal oscillator. I have some like this
there no place to ground it I ordered some like this![]()
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But a 20mhz and it worked. I was just wanting to no if there where xtals that didn't need the case grounded
they work fine with no ground to the case.micro-controller applications