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ECS-33B Tight Stability and Low Aging Quartz Crystal

ECS-33B tight stability, low aging, surface mount quartz crystal for a variety of IoT and wireless applications

The ECS-33B miniature tight stability, SMD crystal from ECS is available in a 3.2 x 2.5 x 0.8 mm (LWH) industry standard ceramic package. It offers very low aging of a maximum ±1 ppm at +25°C ±3°C in the first year. Each model offers tolerance at +25°C ±10 ppm (maximum) and stability as listed below:

  • 33B-CKL: -10°C to +70°C ±10 ppm (max.)
  • 33B-CKM: -20°C to +70°C ±10 ppm (max.)
  • 33B-CKY: -30°C to +85°C ±10 ppm (max.)
  • 33B-CWN: -40°C to +85°C ±15 ppm (max.)
  • 33B-CTN: -40°C to +85°C ±20 ppm (max.)
  • 33B-CHN: -40°C to +85°C ±25 ppm (max.)

View the datasheet here.


  • 3.2 x 2.5 mm footprint
  • Tight tolerance/stability
  • MSL 1
  • Lead finish Au
  • Aging (first year) ±1 ppm max.
  • RoHS 2 and REACH Compliant


  • IoT
  • Wireless
  • Mobile devices
  • WiFi, Bluetooth, and Zigbee

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

About ECS

Founded in 1980, ECS Inc. International has grown to become one of the most recognized and experienced manufacturers of frequency control management products in the world.
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