ECS ECX-16 SMD Tuning Fork Crystals

ECS ECX-16 SMD Tuning Fork Crystals are miniature surface mount tunings fork crystals operating at 32.768kHz frequency. These tuning fork crystals exhibit ±20ppm frequency tolerance resulting in high reliability and improved stability. The ECX-16 tuning fork crystals offer low Equivalent Series Resistance (ESR) and an extended temperature range useful for low-power Real-Time Clock (RTC) applications such as STM32 AN2867. These tuning fork crystals feature a 1.6mm x 1.0mm compact footprint, 12.5ρF load capacitance, 0.5µW driver level, and are RoHS compliant. ECS ECX-16 SMD Tuning Fork Crystals are ideal for automotive, industrial, Commercial off-the-shelf (COTS) products, and the Internet of Things (IoT).


  • 1.6mm x 1.0mm compact footprint
  • Miniature size
  • Extended temperature range
  • RoHS compliant


  • Automotive
  • Commercial off-the-shelf (COTS) products
  • Industrial 
  • Internet of Things (IoT)


  • 32.768kHz tuning frequency
  • ±20ppm @ +25°C frequency tolerance
  • Up to 90kΩ ESR
  • 0.5µW driver level
  • 12.5ρF load capacitance
  • 6.5fF motional capacitance
  • -40°C to +85°C operating temperature range

Dimensions (mm)

Mechanical Drawing - ECS ECX-16 SMD Tuning Fork Crystals
Published: 2018-10-15 | Updated: 2022-10-17