The **MHO+58FCD-R** refers to a high-precision, high-frequency **Crystal Oscillator (OCXO or TCXO)** typically manufactured by MtronPTI. These components are critical in telecommunications and aerospace applications where timing stability is paramount. --- ### 1. Technical Specifications Below is a breakdown of the typical electronic characteristics found in the MHO series (specifically the 58FCD-R variant): | Parameter | Description | | :--- | :--- | | **Component Type** | Crystal Oscillator (Clock) | | **Package Style** | 14-pin DIP (Dual In-line Package) or Flatpack | | **Output Type** | CMOS / TTL Compatible | | **Voltage Supply** | Typically 3.3V or 5.0V DC | | **Frequency Range** | Usually 1.0 MHz to 150.0 MHz (Specific to model) | | **Stability** | High stability over temperature (often ±20ppm to ±50ppm) | | **RoHS Status** | Compliant (Indicated by the "-R" suffix) | --- ### 2. Key Electronic Components & Features The "MHO" series is known for several internal architectural features: * **AT-Cut Quartz Crystal:** Uses a high-quality quartz wafer cut at a specific angle (AT-cut) to minimize frequency drift caused by temperature changes. * **CMOS Drive Circuitry:** The "F" in the part number often signifies a specific frequency stability or output logic level (CMOS), which allows for low power consumption and high noise immunity. * **Tri-state Functionality:** Many models in this series include an "Enable/Disable" pin. When disabled, the output goes into a high-impedance state, reducing system power draw. * **Hermetic Sealing:** The internal parts are housed in a metal resistance-weld package to protect the crystal from humidity and atmospheric pressure changes. --- ### 3. Deciphering the Part Number (MHO+58FCD-R) While manufacturers use proprietary codes, the string generally breaks down as follows: 1. **MHO:** Series designation (MtronPTI High-Reliability Oscillator). 2. **58:** Refers to the physical package size and pin configuration. 3. **F:** Frequency stability code (e.g., ±50ppm). 4. **C:** Temperature range code (e.g., 0°C to +70°C). 5. **D:** Duty Cycle requirements (e.g., 40/60% or 45/55%). 6. **-R:** **RoHS Compliant.** This indicates the part is lead-free and meets environmental safety standards. --- ### 4. Common Applications Due to its high reliability and precision, this part is commonly used in: * **Network Infrastructure:** Synchronizing data packets in switches and routers. * **Industrial Control:** Providing a stable clock for microprocessors in harsh environments. * **Test & Measurement:** Acting as a reference frequency for oscilloscopes or signal generators.