FKT Series Thru-Hole Tuning Fork

Fox Electronics expands its tuning fork crystal selection with DigiKey. The FKT27LF and FKT38LF are initially offered in two different through-hole package sizes FKT26 (2.0 mm x 6.0 mm) and FKT38 (3.0 mm x 8.3 mm).

The key features of this series are miniature packages, cold weld design, long term stability, and tight tolerance.

Specifications

• Frequency: 32.768 kHz
• Frequency tolerance @ 25°C: ±20 PPM
• Frequency stability temperature coefficient: -0.04 PPM / (Δ°C)2
• Temperature range
• Turnover: +20°C ~ +30°C
• Operating: -20°C ~ +60°C
• Storage: -30°C ~ +70°C
• Equivalent series resistance
• FKT26LF: 50 kΩ
• FKT38LF: 35 kΩ
• Load capacitance: 12.5 pF
• Insulation resistance @ 100 V_DC: 500 MΩ Min.
• Drive level: 1.0 µW
• Aging per year: ±3 PPM