MMD Components introduced an ultra-miniature quartz crystal that has a wide frequency range of 16 MHz to 60 MHz and can operate in temperatures as low as -40°C and as high as +85°C. Measuring only 2 mm × 2.5 mm, with a maximum profile of just 0.55 mm, the X series crystals are hermetically sealed in a 4-pad ceramic package and delivered on tape and reel for easy pick and place. They can be used in any application where limited space is a key issue and a frequency reference is required, such as Bluetooth devices, PDAs, mobile phones and MP3 players. The crystals have a frequency tolerance/stability rate as high as ±50 PPM/±100 PPM; are RoHS compliant; and feature ruggedized construction for extreme vibration and shock applications, meeting MIL-STD-883 and MIL-STD-202 specifications. Availability is stock to 14 weeks, with prices starting at $0.95 in 1K quantities.