The **WAC-AZAA-R** is an electronic component primarily classified as a **Passive Crystal Oscillator**. These components are critical for providing precise timing signals (clocking) for microprocessors, microcontrollers, and wireless communication modules. Below is a detailed breakdown of its specifications, functions, and typical applications. --- ### 1. Technical Specifications The "WAC-AZAA-R" follows a standard naming convention for SMD (Surface Mount Device) crystals. While specific values can vary slightly by manufacturer (such as TXC, Epson, or Kyocera), the typical parameters for this series are: | Feature | Specification | | :--- | :--- | | **Component Type** | Quartz Crystal (Resonator) | | **Package Size** | SMD 3225 (3.2mm x 2.5mm) | | **Frequency Range** | Usually 8.000 MHz to 54.000 MHz | | **Load Capacitance** | Typically 8pF to 12pF | | **Frequency Tolerance** | ±10 ppm to ±30 ppm | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Mounting Type** | Surface Mount (SMT) | --- ### 2. Key Electronic Features #### A. Piezoelectric Effect The core of the WAC-AZAA-R is a small slice of quartz crystal. When an electric field is applied, the crystal physically deforms. When the field is removed, it returns to shape, generating a voltage. This creates a highly stable mechanical resonance used to time electronic circuits. #### B. SMD 3225 Form Factor The "3225" designation means the part is very small (3.2mm x 2.5mm). This makes it ideal for modern, compact electronics where PCB (Printed Circuit Board) space is limited. #### C. Stability and Accuracy The "R" suffix often denotes **RoHS Compliance** (Lead-free) and high reliability. The crystal is hermetically sealed (usually in a ceramic package with a metal lid) to prevent environmental moisture from affecting the frequency. --- ### 3. Typical Circuit Application In an electronic circuit, the WAC-AZAA-R is usually connected to the `XTAL_IN` and `XTAL_OUT` pins of an Integrated Circuit (IC). ```c // Conceptual representation of a Microcontroller Clock Setup void SystemClock_Config(void) { // 1. Enable External High Speed oscillator (HSE) // 2. Set the WAC-AZAA-R frequency (e.g., 16MHz) // 3. Configure PLL (Phase Locked Loop) to multiply frequency // 4. System starts executing code based on this heartbeat } ``` --- ### 4. Common Use Cases * **IoT Devices:** Providing timing for Wi-Fi or Bluetooth Low Energy (BLE) modules. * **Consumer Electronics:** Used in tablets, smartwatches, and cameras. * **Automotive:** Found in infotainment systems and ECU (Engine Control Unit) sensors. * **Computing:** Serving as the base clock for USB controllers or Ethernet interfaces. ---