We’re used to some pretty small batteries in miniaturized electronics, thanks to the manufacture of lithium-polymer pouch cells. But they’re still pretty big, and they’re hardly the most stable power storage solution. The French company ITEN may have an answer for designers of micro-power devices though, in the form of a range of tiny surface-mount solid-state rechargeable lithium batteries. These come in a range of capacities from 0.1 mAH to 0.5 mAH, and in a 3.2 by 2.5 mm package look very much like any other slightly larger SMD chip component.
These devices are most likely to be found in applications such as remote wireless sensors, where they can store the energy from a small solar cell or similar to produce the burst of power required to transmit a packet of data as well as the tiny current required to keep things ticking over. The solid state chemistry should provide a long life and lack of leaks. For now they have some evaluation kits on offer, and unless we missed something, no full data sheet. We’d be particularly interested to learn about their temperature sensitivity when it comes to soldering, as we’ve taken to heart the warnings about soldering to more traditional lithium cells.
Via CNX Software.