Tuning forks (sometimes referred to as “wristwatch crystals”) are designed to generate one single frequency: 32.768kHz. This frequency, which is equal to 215 Hz, makes it easy to generate a 1 Hz signal by a series of divide by two frequency dividers, as needed by the watch industry. Tuning forks are cut as close to normal to the Z-axis of the wafer, and typically are 2-5 degrees off of the Z axis. Their frequency stability over temperature is represented as a quadratic function, and they are designed to have a zero-temperature coefficients around 25 C similar to AT-cut crystals. These wristwatch crystals are sufficiently accurate, usually, while worn as intended, i.e., on someone’s wrist for 16 hours and off the wrist for 8 hours each day.
- Precision time piece in miniature ceramic package for SMD mounting.
- 100% RoHS compliant and lead-free product.
- Low aging. High shock and vibration resistant.
- Applications include real-time clocks, battery operated devices
All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.