ECS-8Fx SMD Clock Oscillators ECS ECS-8Fx SMD Clock Oscillators are 5V, CMOS compatible, J-leaded SMD oscillators with an extended temperature range of -40°C to +85°C. The ECS-8FM components utilize a low power CMOS IC in a cost-effective package suitable for reflow soldering. The ECS-8FM SMD Clock Oscillators feature a frequency range between 1.000MHz and 80.000MHz in a RoHS compliant package.