Epson’s FA-118T is not only ultra-miniature (1.6 mm x 1.2 mm), but it also has an extremely low profile (0.35 mm maximum) so thin that it fits flush in a credit card. This crystal is perfect for applications such as smartphones, tablets, and wearables where size and height are critical. It is available in a range of frequencies from 24 MHz to 54 MHz, oscillates in the fundamental mode, and is provided in an ultra-miniature ceramic SMD package.