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quartz crystal oscillator for engineers

Update July 2022 | Original November 2014

2.00 mm x 1.20 mm 32.768 kHz tuning fork crystal ideal recommended for the STM32 AN2867. 

The ECX-12 is a 2.00 mm x 1.20 mm x 0.60 mm 32.768 kHz tuning fork crystal that offers an ESR of 90kΩ. The standard version offers a frequency tolerance of ±20 ppm at +25ºC, with the C version offering a tolerance of ±10 ppm and all components offer an industrial operating temperature range of -40ºC to +85ºC. This surface mount tuning fork offers load capacitance options of 6pF, 7pF, 9pF and 12.5pF. The ECX-12 is offered in two reel sizes: the 3,000-piece -TR option and the 9,000-piece -TR9 option. This electronic component is ideal for mobile devices, IoT, real time clocks and industrial applications. It is also recommended for the STM32 via the AN2867.  

For more information on ECS Inc. recommended timing solutions for STM32 microcontrollers, use our STM32 crystal selection tool here

Features:

  • 2.00 mm x 1.20 mm x 0.60 mm 
  • Frequency: 32.768 kHz 
  • ±20 ppm standard tolerance, tight ±10 ppm option 
  • -40ºC ~ +85ºC operating temperature range 
  • 6pF, 7pF, 9pF and 12.5pF load capacitance options 
  • ESR: 90kΩ 
  • RoHS and REACH Compliant 

Applications:

  • Mobile devices 
  • IoT 
  • Real time clocks 
  • Industrial 
  • COTS 
  • STM32 AN2867 
ImagePart NumberFrequencyToleranceLoad CapacitanceOperating TemperatureDatasheetInventory
ECS-.327-6-12-TR32.768 kHz±20 ppm6 pF-40ºC ~ +85ºCDatasheetInventory
ECS-.327-6-12-C-TR32.768 kHz±10 ppm6 pF-40ºC ~ +85ºCDatasheetInventory
ECS-.327-6-12-TR932.768 kHz±20 ppm6 pF-40ºC ~ +85ºCDatasheetInventory
ECS-.327-7-12-TR32.768 kHz±20 ppm7 pF-40ºC ~ +85ºCDatasheetInventory
ECS-.327-7-12-C-TR32.768 kHz±10 ppm7 pF-40ºC ~ +85ºCDatasheetInventory
ECS-.327-7-12-C-TR932.768 kHz±10 ppm7 pF-40ºC ~ +85ºCDatasheetInventory
ECS-.327-9-12-TR32.768 kHz±20 ppm9 pF-40ºC ~ +85ºCDatasheetInventory
ECS-.327-9-12-C-TR32.768 kHz±10 ppm9 pF-40ºC ~ +85ºCDatasheetInventory

Please contact us if you need additional information or have a specific requirement in your application.

ECS, Inc. International
15351 West 109th Street
Lenexa, KS 66219

Tel: 913-782-7787
Toll Free: 1-800-237-1041
Fax: 913-782-6991

ECX-12 Compact 32.768 kHz Surface Mount Tuning Fork Crystal  was last modified: June 16th, 2023 by Abbie Raphael