To SparkFun Eagle Library Maintainer (somebody must have that title, right?),
The two ground pins on the Eagle footprint for this part are not connected to ground. Is this intentional, or just an oversight? It seems like they should be …
*Brian
I have used this crystal before and have always connected the pins to ground. It is a pain to change the eagle part to having its ground pins connected. It would be nice if sparkfun fixed this.
heads up to anyone milling/etching their own board — the datasheet for this part showing the pads is LOOKING FROM THE BOTTOM. When looking at this crystal from the top, the upper Right and lower Left pads are the crystal pads, while upper Left and lower Right are ground.
[GND]…………………………[X1]
.
…………………top………………..
.
[X2]…………………………[GND]
I have one of these that seems to have died in a project after a few weeks of operation. I don’t know if it died because of poor soldering (or overheating) or if it died because the SF Eagle library didn’t have the other two pins connected to ground. I, too, would like to know if the pins need to be grounded or if they may be left floating.
Help! Does anyone know of a Fritzing part for this? I’m designing a 2.4ghz wireless board, and need to use this instead of its through hole counterpart. The “SMD Crystal” that come with Fritzing looks nothing like this.
Comments 11 comments
To SparkFun Eagle Library Maintainer (somebody must have that title, right?),
The two ground pins on the Eagle footprint for this part are not connected to ground. Is this intentional, or just an oversight? It seems like they should be …
*Brian
I have used this crystal before and have always connected the pins to ground. It is a pain to change the eagle part to having its ground pins connected. It would be nice if sparkfun fixed this.
the datasheet states ~14.74 MHz. Is this correct?
heads up to anyone milling/etching their own board — the datasheet for this part showing the pads is LOOKING FROM THE BOTTOM. When looking at this crystal from the top, the upper Right and lower Left pads are the crystal pads, while upper Left and lower Right are ground.
[GND]…………………………[X1]
.
…………………top………………..
.
[X2]…………………………[GND]
The Datasheet lists the load capacitance as being 18pF and you have it listed here as 12pF. For maximum stability in my project which is it?
Could this be used on a arduino copy board? I ordered some and now i see there are four pins…
yes i think so
I don’t see this in the eagle library (and I just downloaded the new one today). If it is in there, what’s the name.
I have one of these that seems to have died in a project after a few weeks of operation. I don’t know if it died because of poor soldering (or overheating) or if it died because the SF Eagle library didn’t have the other two pins connected to ground. I, too, would like to know if the pins need to be grounded or if they may be left floating.
DATASHEET HAS COMIC SANS!!!!
Help! Does anyone know of a Fritzing part for this? I’m designing a 2.4ghz wireless board, and need to use this instead of its through hole counterpart. The “SMD Crystal” that come with Fritzing looks nothing like this.