This is a high-quality MHz crystal that is perfect for use in electronic devices that require precise frequency control. With a frequency of 27 MHz, it is ideal for use in a wide range of applications. The crystal has an ESR of 50 Ohms and a frequency stability of ±20ppm, making it highly accurate and reliable. It operates in fundamental mode and has a load capacitance of 20pF. The package is tape and reel (TR) and has a dimension of 0.197" L x 0.126" W (5.00mm x 3.20mm). It is mounted using SMD (SMT) and can operate in a temperature range of -10°C to 85°C. This crystal is manufactured by TXC Corporation and comes in a standard package of 1,000.