The **M3V61T1J-R** is a specific surface-mount **Voltage Controlled Crystal Oscillator (VCXO)**. These components are critical in telecommunications and high-speed data networking for precise frequency control and synchronization. --- ### 1. Key Technical Specifications Below are the primary electronic characteristics typical for this series (often produced by manufacturers like KDS Daishinku): | Parameter | Specification | | :--- | :--- | | **Component Type** | VCXO (Voltage Controlled Crystal Oscillator) | | **Package Type** | SMD (Surface Mount Device) | | **Standard Frequency** | Varies (Commonly used in 10MHz to 100MHz+ ranges) | | **Supply Voltage (Vcc)** | Typically 3.3V or 5.0V | | **Control Voltage** | Usually 1.65V ± 1.5V (for 3.3V models) | | **Output Logic** | CMOS / TTL | | **Frequency Pulling Range** | Typically ±50ppm to ±100ppm | --- ### 2. Functional Components The M3V61T1J-R consists of several internal electronic parts integrated into a single ceramic package: 1. **Quartz Crystal Blank:** The heart of the device, providing a stable mechanical resonance. 2. **Varactor Diode:** A voltage-variable capacitor. By changing the voltage at the "Control" pin, the capacitance changes, which "pulls" the crystal frequency slightly up or down. 3. **Oscillator IC:** An integrated circuit that provides the gain required to maintain oscillation and buffers the output signal. 4. **Compensation Network:** Internal resistors and capacitors that ensure stability over temperature variations. --- ### 3. Pin Configuration (Typical 6-Pad Layout) Most VCXOs in this form factor follow a standardized pinout: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | **Vcon** | Voltage Control (adjusts the frequency) | | **2** | **OE or NC** | Output Enable (high/low logic) or No Connection | | **3** | **GND** | Ground / Negative Supply | | **4** | **Output** | The RF signal / Clock output | | **5** | **NC** | No Connection | | **6** | **Vcc** | Positive Supply Voltage | --- ### 4. Applications The "Electronic Parts" within this device are designed to serve the following use cases: * **Phase-Locked Loops (PLLs):** Used to synchronize a local clock to an external reference signal. * **Networking Gear:** Switches and routers that require jitter-free data transmission. * **Broadcast Equipment:** Digital video and audio synchronization. ---