The ECS-060-18-20BM-JEN-TR is a miniature SMD crystal oscillator designed for precision timing in PCM and Ethernet applications. This CSM-8M package features a seam-welded metal lid with ceramic construction, offering a compact 7.0 × 5.0 mm footprint with low profile design. The crystal operates across a frequency range of 6.0 to 42.0 MHz in fundamental mode, with frequency tolerance of ±30 ppm at +25°C and frequency stability of ±50 ppm over the operating temperature range of -10°C to +70°C. Key electrical characteristics include a maximum shunt capacitance of 5 pF, load capacitance of 20 pF (series), and maximum drive level of 100 µW, with ESR specifications varying by frequency band. The RoHS-compliant design with gold lead finish and MSL 1 rating makes it suitable for high-reliability communication and networking equipment requiring stable, compact timing references.