The FOXSDLF/040/TR is an SMT crystal oscillator from Abracon Corporation. It is a 4 MHz frequency-stabilized oscillator, with a built-in ESR (effective series resistance) compensation circuit housed in a 4.0mm x 3.2mm x 1.2mm ceramic package. It features very low aging and temperature stability, as well as low power consumption. This oscillator is designed for proper operation in an environment with a temperature range of -10°C to +70°C. It also has a guaranteed symmetric frequency tolerance of ±50ppm, with an optional frequency-tolerance of ±10ppm available. It is suitable for various applications, such as embedded applications, consumer electronics, communication equipment, computer peripherals, and other electronics requiring precision frequency source control.