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TF Series Tuning Fork Crystals


CTS introduces the TF series of 32.768 kHz tuning fork crystal designs


CTS Electronic Components' TF Series Tuning Fork CrystalsCTS Electronic Components, Inc. announces development of the TF32 and TF20 series tuning fork crystals. These crystals are housed in a ceramic 2-pad surface mount package, 3.2 mm x 1.5 mm and 2.0 mm x 1.2 mm respectively. Commonly referred to as "watch crystals", these tuning fork designs are suitable for applications that include clock timers, wireless communications, test and measurement, portable equipment, FPGAs, PDAs, mobile phone and notebooks.

Starting with a 32.768 kHz frequency, the TF Series devices are optimized for a standard 12.5 pF load capacitance. The standard frequency tolerance at +25°C is ±20 ppm. With a standard operating temperature range of -40°C to +85°C, the TF Series provides a temperature coefficient of -0.030 ppm/°C.

Additional features include: turnover temperature range of +20°C to +30°C, series resistance of 70k Ohms maximum, insulation resistance of 500M Ohms at +100 Vdc, and storage temperature range at -55°C to +125°C. Aging is ±3 ppm per year.

Features Applications
  • Frequency reference: 32.7680 kHz
  • Tuning fork crystal design
  • Hermetic ceramic package
  • Frequency tolerance: ±20 ppm standard
  • Frequency temperature coefficient, -0.030 ppm/°C²
  • Operating temperature: -40°C to +85°C standard
  • RoHS/Green compliant
  • Communication equipment
  • Measurement equipment
  • Industrial applications
  • Automotive electronics
  • Wireless communications
  • Mobile phones
  • Notebooks

Digi-Key P/N Packaging Manufacturer P/N Description
CTX1161CT-ND Cut Tape (CT) TF202P32K7680 CRYSTAL 32.768 KHZ 12.5PF SMD Datasheet
CTX1161TR-ND Tape & Reel (TR)
CTX1161DKR-ND Digi-Reel (DKR)
CTX1160CT-ND Cut Tape (CT) TF322P32K7680 CRYSTAL 32.768 KHZ 12.5PF SMD Datasheet
CTX1160TR-ND Tape & Reel (TR)
CTX1160DKR-ND Digi-Reel (DKR)