Off-the-shelf ultracapacitors have, only in same rare cases, shock and vibration ratings, however those are always too mild and do not comply with any MIL standard, and cannot be used in harsh environments encountered in oil&gas or aerospace and defense applications. For example Maxwell Technologies only rates shock and vibration in one particular product, the 3,000F cell. However its shock and vibration ratings are not compatible with harsh environments. Their maximum shock is 100G for 6ms, and the maximum vibration is 5.9 Grms.
FastCAP's 35F (left) and 350F (right) cells
All FastCAP products are rated for shock and vibration: in particular they are rated for 500G shock for 1ms (5 times higher than Maxwell's) and 20Grms vibration (3.4 times higher than Maxwell's) while kept at high temperatures (up to 150C). This makes them compatible with oil&gas and defense applications. All our products are hermetically sealed, and do not have volatile electrolytes (i.e. acetonitrile based). In several cases, commodity ultracapacitors present safety concerns because at the end of life they might vent and release toxic gasses generated by volatile organic solvents. FastCAP's products do not have these issues, as they do not use volatile solvents.
We often receive questions about capacitance, and more specifically why, when compared to other off the shelf capacitors, our cells don't have capacitance of 1,000F or more. The answer to this is that what matters is the capacitance per unit of volume (F/cc), as it describes how much capacitance the device has in a given volume. FastCAP has AA and D cell configurations, which are standard across several industrial applications. In our D cell the capacitance density is about 6.5 F/cc (360F in 55cc), in Maxwell Technologies' 650F product the density is 4.3 F/cc, or 35% less. FastCAP can also provide custom larger cells having capacitance greater than 350F.