Before beginning a design or purchase of a crystal there are system parameters, which must be considered. Below are questions, which need to be determined by your system. These parameters will determine the crystal specifications.

1. On what crystal frequency do you wish to operate?

2. How much can the frequency be off at room temperature (+25°C)?

3. What is the temperAature range over which the crystal will operate?

4. How much can the crystal change frequency over the temperature range?

5. Is the crystal to be operated at Series or Parallel resonant?

6. If operated at parallel, what is the parallel capacitance in Pico farads (pF)?

7. What holder or can do you need?