EMRFD Message Archive 13839

Message Date From Subject
13839 2017-04-29 12:22:35 pbbonham piezoelectric resonator / crystals
I am in the process of designing a crystal controlled transmitter. When hunting for my crystals I started wondering if there was an efficiency/stability advantages between the different case sizes. I have found the same frequency in 3 different packages. According to the seller they are all the same type (slice, shape,freq) just different outer cans.

Can anyone here shed any light on the differences?

Thank you

13840 2017-04-29 17:04:27 wb8yyy_curt Re: piezoelectric resonator / crystals
well if its the same quartz, the package will only affect the capacitance in parallel with the crystal.  it could move the frequency a little, but perhaps not much effect for lower frequency crystals.  unusual in this age to see this option. 

well if you have some different crystals in hand you can experiment, but I would not go to the trouble of ordering them. 

last I looked KC9ON had some crystals at decent prices