Murata Resonator library?

dkemppai

Hi,

Just wondering if any of you have any libraries for Cadsoft Eagle that have the SMT Murata 50Mhz ceramic resonators in them. I found one library on the Cadsoft site, but only the through hole versions are included...

Also, has anyone run the resonators up over 140 or 150 degrees C??? I understand that Parallax only sells the commercial version, not the automotive/industrial version.

Any info/help would be great!

Thanks,
Dan
·

Paul Baker

Design your own, its quite simple to do, heres the spec sheet: http://www.murata.com/catalog/p16/el0430.pdf
page 5 has the land patterns.

Create a new library or edit murata's through hole library.
In your package design, change grid spacing to mm and select an appropriate snap resolution,·click on SMD then type the land size in the command line in "A x B" format, A being horizontal size in mm and B being vertical size in mm. Place the first pad (typically place the center mark of the grid at one of the corners or the center of the first pad). Then by using the mark command and resizing the grid when nessesary, place lines in the Document layer to denote where the other pads need to go, then place the pads, erase the document lines, name the pads, and place any info you want silk screened using the drawing tools in the tPlace layer, follow Eagle's documentation for how to design the symbol, placing pins for each of the pads and what not, then create a part by linking the package with the symbol.

My current project required me creating nearly all of my components, fortunately I was able to stick with standard packages for most, but things like resonators, smd resistor packs·and oscillators have no packages defined for them.

Remember, practice makes perfect, and always double check your dimensions and spacing after your done designing your package.

Paul