The **MHO+33FCD-R** is a high-precision, high-frequency **Oven Controlled Crystal Oscillator (OCXO)** manufactured by MtronPTI. These components are designed for applications requiring extreme frequency stability and low phase noise. --- ### 1. Technical Specifications The following table highlights the core technical characteristics typically associated with the MHO series: | Parameter | Specification (Typical) | | :--- | :--- | | **Component Type** | OCXO (Oven Controlled Crystal Oscillator) | | **Output Type** | CMOS / HCMOS | | **Frequency Range** | Typically 10 MHz to 52 MHz (Varies by model) | | **Supply Voltage** | +3.3 VDC (indicated by the '33' in the part number) | | **Package Style** | Through-hole (DIP-14 compatible footprint) | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | | **Frequency Stability** | ±50 ppb to ±100 ppb (Parts per billion) | --- ### 2. Breakdown of Part Numbering Understanding the nomenclature helps identify the specific features of the component: * **MHO:** Identifies the product series (MtronPTI High-Precision OCXO). * **+33:** Indicates the operating voltage (3.3 Volts). * **F:** Usually denotes the frequency stability or output symmetry characteristic. * **C:** Refers to the output type (CMOS). * **D:** Indicates the package style or pinout configuration (often 14-pin DIP size). * **-R:** Signifies **RoHS Compliance** (Lead-free). --- ### 3. Key Internal Features The "Oven Controlled" nature of this part makes it significantly different from standard crystal oscillators (XO) or temperature-compensated oscillators (TCXO): * **Internal Heater:** It contains an internal oven that heats the quartz crystal to a specific "turnover temperature." By keeping the crystal at a constant high temperature, it remains unaffected by external ambient temperature fluctuations. * **SC-Cut Crystal:** These units often utilize "Stress Compensated" cut crystals which offer better thermal stability and aging characteristics than standard AT-cut crystals. * **Low Phase Noise:** Designed to minimize "jitter," making it ideal for high-speed communication and signal processing. --- ### 4. Common Applications Due to its high stability, the MHO+33FCD-R is commonly found in: * **Telecommunications:** Base stations, small cells, and synchronization modules. * **Test & Measurement:** Frequency counters and signal generators. * **Networking:** Synchronous Ethernet (SyncE) and IEEE 1588 PTP clocks. * **Radar Systems:** Systems requiring precise timing for signal reflection analysis. ---