The part number **M7R24TCJ-R** refers to a high-performance **Crystal Oscillator** (specifically a Temperature Compensated Crystal Oscillator or VC-TCCO derivative) typically manufactured by companies like **MtronPTI**. These components are critical for providing stable frequency references in telecommunications, networking, and industrial equipment. --- ## 1. Component Specifications Below is a breakdown of the typical technical characteristics associated with this series: | Parameter | Typical Specification | | :--- | :--- | | **Component Type** | TCXO (Temperature Compensated Crystal Oscillator) | | **Package Size** | 5.0 x 7.0 mm (SMD) | | **Output Type** | CMOS / HCMOS | | **Supply Voltage** | 3.3V (Typical for 'R' series) | | **Frequency Stability** | ±1.0ppm to ±2.5ppm (depending on temp range) | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | | **Packaging** | Tape & Reel (indicated by the "-R" suffix) | --- ## 2. Part Number Decoder While internal coding can vary slightly by manufacturer, the nomenclature generally breaks down as follows: 1. **M7R**: Refers to the series family (7.0x5.0mm package, 3.3V operation). 2. **24**: Often denotes the specific frequency or a code for a frequency (e.g., 24.000 MHz). 3. **T**: Indicates "Temperature Compensated" (TCXO). 4. **CJ**: Represents the stability and operating temperature range code. 5. **-R**: Indicates the shipping method is **Tape & Reel**. --- ## 3. Key Electronic Features * **Low Phase Noise:** Designed for high-speed data transmission where "jitter" must be minimized to prevent data errors. * **Tri-state Function:** Includes an enable/disable pin (Pin 1) that allows the output to go into a high-impedance state, saving power when the clock signal is not needed. * **Hermetically Sealed:** The quartz crystal is housed in a seam-welded ceramic package to protect against humidity and atmospheric contaminants. --- ## 4. Typical Applications * **Networking:** Wi-Fi 6 routers, Base stations, and Ethernet switches. * **Telecommunications:** SONET/SDH and fiber optic modules. * **GPS/GNSS:** Providing a stable clock for satellite positioning sync. * **Industrial:** Precision measurement tools and high-speed PLCs. ---