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K135 Tuning Fork

Fox's K135 tuning fork is optimized for a standard 12.5 pF load capacitance

Image of Fox Electronics' K135 Tuning ForkFox Electronics' K135 miniature watch crystal measures just 3.2 mm x 1.5 mm with a very low profile of 0.9 mm. The extremely small size of the K135 watch crystal makes it ideal for applications where space is critical, such as in portable and handheld devices.

Features
  • Frequency: 32.768 kHz
  • Frequency tolerance @ 25°C: ±20 PPM
  • Frequency stability temperature coefficient: -0.045 PPM / (Δ°C)2
  • Temperature range:
    • Turnover: +20°C ~ +30°C
    • Operating: -40°C ~ +85°C
    • Storage: -55°C ~ +125°C
  • Equivalent series resistance: 70 kΩ
  • Load capacitance: 12.5 pF
  • Insulation resistance @ 100 VDC: 500 MΩ Minimum
  • Aging per year: ±3 PPM
  • Max soldering temp / time: 260°C / 10 seconds
  • Moisture sensitivity level (MSL): 1
  • Termination finish: Ni/Au
  • Drive level:
    • 1.0 µW
    • 0.1 µW Typ.
    Image of Fox Electronics' K135 Tuning Fork Diagram

K135 Tuning Fork

ImageManufacturer Part NumberDescriptionAvailable Quantity
CRYSTAL 32.7680KHZ 12.5PF SMDFK135EIHM0.032768-T3CRYSTAL 32.7680KHZ 12.5PF SMD84783 - ImmediateView Details
Published: 2013-07-02