The part number **MHO+73FBD-R** typically refers to a high-precision **Crystal Oscillator** manufactured by **MtronPTI**. These components are critical for providing a stable clock signal in electronic circuits. --- ### 1. Part Number Breakdown While specific prefixes can vary by manufacturer revisions, the code generally breaks down as follows: | Segment | Meaning | Description | | :--- | :--- | :--- | | **MHO** | Series Code | Represents the Metal-Can, HCMOS/TTL compatible oscillator series. | | **7** | Package Style | Refers to a Half-Size (8-pin) DIP package (through-hole). | | **3** | Voltage | Typically indicates **3.3V DC** operation. | | **F** | Stability | Often denotes a frequency stability of **±100 ppm** (or better depending on the datasheet version). | | **B** | Temp Range | Usually represents an industrial temperature range (**-40°C to +85°C**). | | **D** | Duty Cycle | Represents a symmetry/duty cycle of **40/60%** or **45/55%**. | | **-R** | Compliance | Indicates **RoHS Compliant** (Lead-free). | --- ### 2. Key Technical Specifications These parts are designed for reliability in industrial and communication environments. * **Output Type:** HCMOS / TTL compatible. * **Frequency Range:** Available in various frequencies (the specific MHz value is usually printed on the physical component). * **Supply Voltage ($V_{dd}$):** 3.3 Volts. * **Package Type:** 8-Pin Half-Size DIP (Through-hole). Only 4 pins are usually present (1, 4, 5, 8). * **Operating Temperature:** -40°C to +85°C. --- ### 3. Pin Configuration (Typical 8-pin DIP) The physical part uses a standard layout for half-size oscillators: | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | N/C or Tri-state | No connection or Output Enable/Disable. | | **Pin 4** | GND | Circuit Ground. | | **Pin 5** | Output | The generated clock signal. | | **Pin 8** | +Vdc | Power Supply (3.3V). | --- ### 4. Common Applications Due to its rugged through-hole design and industrial temperature rating, it is commonly found in: 1. **Industrial Controls:** PLCs and automation hardware. 2. **Networking:** Routers, switches, and modems. 3. **Legacy Hardware:** Maintenance and repair of older PCB designs that use DIP components. 4. **Test & Measurement:** Oscilloscopes and signal generators.