The **MHO+17TBD-R** is a high-precision, oven-controlled crystal oscillator (OCXO) manufactured by **MtronPTI**. It belongs to the MHO series, which is specifically designed for high-reliability applications requiring extreme frequency stability over temperature variations. --- ### 1. Component Overview The device is an **OCXO (Oven Controlled Crystal Oscillator)**. Unlike standard oscillators, it contains an internal heating element and a control circuit that maintains the quartz crystal at a constant, specific temperature (the "turnover point"). This minimizes frequency drift caused by external temperature changes. ### 2. Technical Specifications Below are the typical technical parameters for the MHO series (specifically the 17TBD-R variant): | Parameter | Specification (Typical) | | :--- | :--- | | **Package Type** | Thru-hole (DIP) 4-pin or 14-pin equivalent | | **Output Type** | CMOS / TTL | | **Supply Voltage ($V_{cc}$)** | +5.0 VDC (Standard) | | **Frequency Stability** | $\pm 0.1$ ppm to $\pm 0.7$ ppm | | **Operating Temp Range** | -40°C to +85°C (Industrial Grade) | | **Warm-up Power** | ~2.0 Watts | | **Steady State Power** | ~0.8 Watts | | **RoHS Compliance** | Yes (-R suffix indicates RoHS compliant) | --- ### 3. Key Features * **High Stability:** Offers significantly better stability than TCXOs (Temperature Compensated Crystal Oscillators). * **Low Phase Noise:** Designed to provide a very clean signal, which is critical for high-speed data transmission and RF applications. * **Aging Rate:** Very low long-term aging (usually measured in ppb/day). * **Standard Footprint:** Often follows the "Half-size DIP" or "Full-size DIP" industry standard for easy PCB integration. ### 4. Part Number Breakdown (Nomenclature) * **MHO:** MtronPTI High-Stability OCXO Series. * **17:** Specific package size/configuration (typically a 14-pin DIP footprint). * **T:** Temperature Stability code. * **B:** Operating Temperature Range code. * **D:** Voltage Supply code (usually 5.0V). * **-R:** RoHS Compliant (Lead-Free). --- ### 5. Common Applications Due to its precision, the MHO+17TBD-R is commonly found in: * **Telecommunications:** Base stations, small cells, and synchronization modules. * **Test and Measurement:** Frequency counters and signal generators. * **Navigation:** GPS disciplined clocks and aerospace instrumentation. * **Networking:** Synchronous Ethernet (SyncE) and IEEE 1588 timing.