Based on technical specifications for industrial electronic components, the **MV28T1CD-R** typically refers to a high-precision, oven-controlled or temperature-compensated crystal oscillator (OCXO/TCXO) or a specific series of relay/timing modules, depending on the manufacturer (most commonly associated with **Microchip/Vectron** or specialized timing brands). Below is a breakdown of the electronic characteristics typically associated with this part number. --- ### 1. General Specifications The part is designed for high-stability frequency control in telecommunications and industrial synchronization. | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator | | **Package Style** | Through-hole (DIP) or Surface Mount (SMD) | | **Output Type** | CMOS / HCMOS or Sine Wave | | **Frequency Stability** | ±0.5ppm to ±2.5ppm (Temperature Dependent) | | **Operating Voltage** | 3.3V or 5.0V DC | | **Operating Temp Range** | -40°C to +85°C (Industrial Grade) | --- ### 2. Key Electronic Features #### A. Temperature Compensation The "CD" designation often implies a specific temperature range and stability grade. The internal circuitry utilizes a compensation network (analog or digital) to ensure the frequency remains stable even as the ambient temperature fluctuates. #### B. Frequency Control (VCTCXO Capability) If this is a **V**-series variant, it includes a "Voltage Control" pin. * **Purpose:** Allows for fine-tuning of the output frequency via an external control voltage. * **Application:** Useful for Phase-Locked Loops (PLL) where the clock needs to sync with a master reference. #### C. Phase Noise Performance Designed for low jitter, these parts are critical for: * High-speed data transmission. * Base station synchronization. * GPS/GNSS disciplined clocks. --- ### 3. Pinout Configuration (Standard 4-6 Pin Layout) While you should always consult the specific datasheet for the **MV28T** series, the standard configuration is: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | Vc or NC | Voltage Control or No Connection | | **2** | GND | Case Ground | | **3** | Output | Frequency Output Signal | | **4** | Vcc | Positive Supply Voltage | --- ### 4. Common Applications * **Telecommunications:** SDH/SONET, ATM, and WAN/LAN equipment. * **Instrumentation:** Frequency counters and synthesizers. * **Wireless:** Cellular base stations (LTE/5G small cells). --- ### 5. Identification Code Breakdown * **MV:** Series prefix (Manufacturer specific). * **28:** Package size or specific design iteration. * **T:** Temperature Compensated (TCXO). * **1:** Voltage code (e.g., 3.3V). * **CD:** Stability/Temperature grade identifier. * **R:** Tape & Reel packaging (Shipping format).