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ECX-1247B Tight Stability Low Aging Crystal

ECX-1247B offers low ESR and low first-year aging of ±1 ppm max

ECX-1247B miniature, tight-stability SMD crystals have a compact ceramic package size of 1.6 x 1.2 x 0.3 mm (LWH). The ECX-1247B crystals offer low ESR and low first-year aging of ±1 ppm max. The 47B-7KM version has a tolerance of ±7 ppm max at +25°C and a stability of ±10 ppm max over -20°C ~ +70°C.


  • 1.6 mm x 1.2 mm footprint
  • Tight tolerance/stability
  • Low ESR
  • RoHS 3 and REACH compliant.


  • MSL 1
  • Lead finish Au
  • Aging (first year): ±1 ppm max


  • Wireless mobile services
  • Wearables
  • WiFi


  • Bluetooth
  • Zigbee
  • IoT
Image Part Number Frequency Frequency
Datasheet Check
2033 2018 ECS-240-8-47B-7KM-TR 24 MHz ±10ppm -20°C ~ +70°C Datasheet Inventory
2033 2018 ECS-320-8-47B-7KM-TR 32 MHz ±10ppm -20°C ~ +70°C Datasheet Inventory

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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15351 West 109th Street, Lenexa, KS 66219
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