ECS ECX-1210B2 32.768KHz SMD Tuning Fork Crystals

ECS ECX-1210B2 32.768KHz SMD Tuning Fork Crystals are ultra-miniature, four-pad devices in a 1.2mm length x 1.0mm width x 0.5mm height ceramic package. These ECS SMD tuning fork crystals feature a typical frequency of 32.768kHz and an operating temperature range of -40°C to +105°C. The ECX-1210B2 is ideal for small wearables and medical devices.

Features

  • Very compact SMD tuning fork crystal
  • 1.2mm length x 1.0mm width x 0.5mm height ceramic package
  • Designed for low-power RTC applications (such as STM32)

Applications

  • Smartphones
  • Wireless modules
  • Medical devices
  • Wearable devices

Specifications

  • 32.768kHz typical frequency
  • ±20ppm frequency tolerance
  • 12.5pF load capacitance
  • 0.3μW maximum drive level, 0.1μW typical
  • 90kΩ equivalent series resistance
  • 1.5pF shunt capacitance
  • ±3ppm aging first year
  • -40°C to +105°C operating temperature range

Pad Connections

Location Circuit - ECS ECX-1210B2 32.768KHz SMD Tuning Fork Crystals

Dimensions

Mechanical Drawing - ECS ECX-1210B2 32.768KHz SMD Tuning Fork Crystals
Published: 2026-03-16 | Updated: 2026-03-24