Crystal question; where to get a SM one like on the Propeller Backpack?

vanmunch

Hello,
I'm working on my first PCB project with SM parts and I was trying to find a 5mHz clock crystal that's the same size/packages as the 6.25 crystal that's used in the Propeller Packpack. Adding to my question,I've been looking on Mouser and they have two categories "crystal" and "oscillator". I've looked at the data sheets here and I can't figure out which one I need. Any suggestions? Thanks!

Propeller Backpack:
http://www.parallax.com/Store/Microcontrollers/PropellerDevelopmentBoards/tabid/514/CategoryID/73/List/0/SortField/0/Level/a/ProductID/602/Default.aspx

Clock I need, but just SM and smaller:
http://www.parallax.com/StoreSearchResults/tabid/768/txtSearch/Crystal/List/0/SortField/4/ProductID/341/Default.aspx

Leon

You won't find small 5 MHz crystals. You will need to use a higher frequency, like 6.25 MHz, if you want something as small as possible.

An oscillator contains other components and will generate a clock signal on its own, if it's supplied with power.

ctwardell

Here is a 5Mhz surface mount at Digi-Key, I don't think it is as small as the crystal on the Backpack though.

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=XC1720TR-ND

C.W.

Phil Pilgrim (PhiPi)

You just won't find a 5 MHz crystal as small as the 10 MHz units on the Backpack and Spin Stamp.

-Phil

vanmunch

Ok, great. Thanks for the help!

Duane C. Johnson

Citizen has a very small cylindrical "watch style" SMD 5MHz crystal.
About .12" x .35" plus the leads.
See:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=300-2072-1-ND

Duane

CannibalRobotics

Duane C. Johnson wrote: »

Citizen has a very small cylindrical "watch style" SMD 5MHz crystal.

I've used this one too and it works quite well.

vanmunch

Thanks guys, I've ordered a couple of each.