The **M3EH11ZPD-R** is a specific part number belonging to a high-frequency, surface-mount oscillator series, typically manufactured by companies like **NDK (Nihon Dempa Kogyo)** or similar precision timing component specialists. These components are critical in telecommunications and high-speed data processing applications. --- ### 1. Key Technical Specifications Based on the standard nomenclature for this series, here are the primary electronic characteristics: | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | Crystal Oscillator (SPXO or TCXO) | | **Output Type** | LV-PECL (Low-Voltage Positive Emitter-Coupled Logic) | | **Frequency Range** | Typically 50 MHz to 175 MHz (Depending on specific tuning) | | **Supply Voltage** | +3.3V DC (Standard for the 'Z' designation) | | **Package Size** | 7.0 x 5.0 mm (6-pad SMD Ceramic Package) | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | --- ### 2. Functional Electronic Components The "M3EH" series is an integrated solution that combines several sub-components into a single ceramic housing: 1. **Quartz Crystal Resonator:** The heart of the part, providing the fundamental mechanical vibration through the piezoelectric effect. 2. **Oscillator IC:** An application-specific integrated circuit (ASIC) that sustains the oscillation and manages the output buffers. 3. **LV-PECL Output Buffer:** This specific electronic stage ensures high-speed signal integrity over long PCB traces with low electromagnetic interference (EMI). 4. **Internal Bypass Capacitors:** Built-in components to reduce power supply noise and stabilize the frequency. --- ### 3. Pin Configuration The M3EH11ZPD-R usually utilizes a 6-pin layout for differential signaling: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | OE or NC | Output Enable (High = Active) or No Connection | | **2** | NC | No Connection | | **3** | GND | Ground / Case | | **4** | OUT | Main Output Signal | | **5** | #OUT | Complementary Output Signal (Differential) | | **6** | Vcc | Supply Voltage (+3.3V) | --- ### 4. Typical Applications Because of the **LV-PECL** output and high frequency, this part is used in: * **Ethernet Switches:** 10GbE and 40GbE infrastructure. * **Fiber Channel:** Storage Area Networks (SAN). * **SONET/SDH:** Optical transmission equipment. * **FPGA Clocking:** Providing high-speed reference clocks for Xilinx or Altera chips.