DESCRIPTION

The ECS-20-20-1 is an HC-49U quartz crystal featuring AT-cut design and resistance weld construction, engineered for reliable frequency generation across a wide range of applications. This crystal operates over a frequency range of 1.800 MHz to 100.000 MHz with excellent frequency tolerance of ±30 ppm at +25°C and frequency stability of ±50 ppm across the operating temperature range of -10°C to +70°C. The device exhibits exceptional aging characteristics with first-year aging of ±5.0 ppm at +25°C, low shunt capacitance of 7.0 pF maximum, and configurable load capacitance from 10.0 pF to series resonance, with maximum equivalent series resistance (ESR) varying by frequency band from 750 O at 1.8–2.0 MHz down to 20 O at 16–25 MHz. The ECS-20-20-1 is ideal for precision timing, clock generation, and frequency control in consumer electronics, telecommunications, and industrial instrumentation where cost-effectiveness, tight tolerances, and excellent reliability are essential.