This document describes the features and characteristics of the FMX-635 series 1.0mm ceramic surface mount crystal, with a frequency range of 10.000MHz to 80.000MHz. It provides options for frequency tolerance/stability and operating temperature range.
The Caliber FMX-635 Series datasheet provides a comprehensive part‑numbering guide for the metal‑lid, seam‑weld crystal family. It lists the package dimensions, marking conventions, and available options such as load capacitance and shunt capacitance.
Electrical and mechanical specifications are detailed, including frequency range, temperature limits, stability tolerances, insulation resistance, drive level, and equivalent series resistance (ESR) across different frequency bands. Environmental and mechanical data are also referenced.
| Frequency Range | 10.000 MHz to 80.000 MHz |
|---|---|
| Operating Temperature Range | -55 °C to 100 °C |
| Load Capacitance Options | 10 pF to 50 pF |
| Insulation Resistance | 500 MΩ minimum at 100 V |
| Drive Level | 100 µW maximum |
| Frequency Tolerance A | +10 ppm |
| ESR (<13 MHz) | < 50 Ω |
The FMX-635 series covers frequencies from 10.000 MHz up to 80.000 MHz.
Load capacitance can be selected in the range of 10 pF to 50 pF.
The crystal is rated for storage temperatures from –55 °C to 100 °C.
The maximum allowable drive level is 100 µW.