The AS-12.000-18-EXT-SMD-TR is a surface-mount crystal manufactured by Raltron. Supreme Components International is an authorised distributor of Raltron products, ensuring you receive genuine components. This crystal operates at a frequency of 12MHz with a frequency tolerance of ±18ppm. It features an 8pF load capacitance and a 30 Ohm equivalent series resistance (ESR). Designed for reliable performance in demanding environments, this crystal operates within a temperature range of -40°C to +85°C. The SMD package allows for efficient and automated assembly processes. Ideal for various applications requiring precise frequency control, including microcontrollers, communication devices, and timing circuits. Trust Supreme Components International for your Raltron crystal needs.