I doubt you'll find a triax that small. The little Endevco uniaxials are that size, and when I was looking around for accelerometers to test 1/5 scale BIW models they were the best we could find. In the end I think we used the strobe more than anything else, and did a visual correlation back to the FEA model.

So, try Endevco as the best shot.

Cheers

Greg Locock

Just checked, Endevco model 23 is their smallest triax in the catalogue I have, but it is 5x6x8 mm

Cheers

Greg Locock

Yes Endevco claims that the Model 23,  http://www.endevco.com/test/products-all-numerical-set.html is the worlds smallest tri-axial.  I also note that the sensitivity is only 0.4 pc/g or 4 pC/m/s2.  There is a tradeoff for size.

I have always found that the cabling for small triaxials is difficult.  A small triaxial is good but keeping the 3 cables out of the way can pose some problems when you have a light structure.  Single axis accelerometers will be smaller and could be easier to mount in the long run.

Good luck.

C. Hugh (www.Hatch.ca)