ECS HC-49USX Low-Profile Quartz Crystals

ECS HC-49USX Low-Profile Quartz Crystals are cost-effective, lead-free, and RoHS-compliant crystals with a maximum height of 3.5mm. The HC-49USX thru-hole mount, resistance weld-type crystals have an operating temperature range of -10°C to +70°C. The HC-49USX-DN series features an industrial temperature range of -40°C to +85°C. ECS HC-49USX Low-Profile Quartz Crystals feature a frequency range between 3.57MHz and 70MHz.


  • Cost-effective
  • Industrial available (-DN series)
  • Low profile
  • Thru-hole mounting
  • Moisture Sensitivity Level (MSL) 1
  • Lead free and RoHS compliant


  • 3.570MHz to 70MHz frequency range
  • 3.5mm maximum height 
  • Mode of oscillation
    • Fundamental mode from 3.570MHz to 30MHz
    • 3rd overtone mode in 27MHz to 70MHz with 100Ω maximum ESR
  • 7pF shunt capacitance
  • 500µW drive level
  • ±5ppm first-year aging at +25°C ±3°C
  • Operating temperature range
    • HC-49USX: -10°C to +70°C
    • HC-49USX-DN: -40°C to +85°C
Veröffentlichungsdatum: 2011-01-12 | Aktualisiert: 2023-03-21