The part number **2-7Z1-R** typically refers to a specialized electronic component, most commonly identified as a **Crystal Oscillator** or a specific high-precision **Quartz Crystal** unit manufactured by companies like **TXC Corporation**. --- ## 1. Component Overview This component is a surface-mount device (SMD) used for frequency control and timing in electronic circuits. It converts mechanical resonance into an electrical signal with a very precise frequency. ### Key Specifications (Typical) | Feature | Description | | :--- | :--- | | **Component Type** | Quartz Crystal (Resonator) | | **Package Size** | 2.0mm x 1.6mm (Ultra-miniature) | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Number of Terminals** | 4 Pads | | **RoHS Status** | Compliant (Lead-free) | --- ## 2. Technical Characteristics Based on the standard naming conventions for the 7Z series (specifically from TXC), here are the technical details: * **Miniaturization:** The "2.0 x 1.6" footprint is designed for high-density PCB layouts, common in mobile devices and wearables. * **Frequency Range:** Usually available in frequencies ranging from **16 MHz to 54 MHz**. * **Stability:** High thermal stability, often used in environments where temperature fluctuations occur. * **Sealing:** Uses seam welding technology, ensuring high reliability and vacuum integrity for the internal quartz crystal. --- ## 3. Common Applications Due to its small form factor and precision, the 2-7Z1-R is found in: 1. **Consumer Electronics:** Smartphones, tablets, and smartwatches. 2. **Wireless Communication:** Bluetooth modules, Wi-Fi chipsets, and Zigbee devices. 3. **Computing:** High-speed USB peripherals and low-power microcontrollers. --- ## 4. Typical Pin Configuration Most 4-pad crystals like this follow a standard internal wiring: ```text Pin 1: Crystal Terminal / Input Pin 2: Ground (GND) / Metal Lid Connection Pin 3: Crystal Terminal / Output Pin 4: Ground (GND) / Metal Lid Connection ``` *Note: Pins 2 and 4 are usually connected to the metal lid for EMI shielding.*