The **M5R24ZPJ-R** is a specific surface-mount (SMD) quartz crystal resonator commonly used in precision timing and frequency control applications. It is part of the M5R series, known for its compact size and high stability. --- ### 1. Technical Specifications Below are the typical electronic characteristics for the M5R24ZPJ-R: | Parameter | Specification | | :--- | :--- | | **Nominal Frequency** | 24.000 MHz | | **Component Type** | Quartz Crystal (Resonator) | | **Package Type** | SMD (Surface Mount Device) | | **Package Size** | 5.0 x 3.2 mm (Standard 5032 size) | | **Load Capacitance ($C_L$)** | Typically 18pF or 20pF (Varies by sub-spec) | | **Frequency Tolerance** | ±30 ppm (Standard) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | Compliant (Lead-Free) | --- ### 2. Functional Description The M5R24ZPJ-R operates based on the **piezoelectric effect**. When an electric field is applied across the quartz wafer, it vibrates at a specific resonant frequency (24 MHz). This provides a steady clock signal for microcontrollers and communication ICs. ### 3. Pin Configuration (Internal) While the physical component typically has 4 pads, only two are connected to the crystal. 1. **Pad 1:** Crystal Terminal / Input 2. **Pad 2:** Ground (Metal lid connection for EMI shielding) 3. **Pad 3:** Crystal Terminal / Output 4. **Pad 4:** Ground (Metal lid connection for EMI shielding) --- ### 4. Typical Application Circuit To use this part in a circuit with a microcontroller (MCU), you generally need two load capacitors ($C_1$ and $C_2$). ```cpp // Schematic Representation [MCU_XTAL_IN] ----+----[ Crystal ]----+---- [MCU_XTAL_OUT] | | [C1] [C2] | | (GND) (GND) ``` **Calculation Tip:** The values of $C_1$ and $C_2$ are calculated using the formula: $C_L = \frac{C_1 \times C_2}{C_1 + C_2} + C_{stray}$ --- ### 5. Key Advantages * **High Precision:** Offers much tighter frequency stability compared to ceramic resonators. * **Compact Footprint:** The 5032 package is ideal for space-constrained PCB designs like IoT devices and automotive modules. * **Reliability:** The "ZPJ" designation often refers to specific aging and thermal shock resistance characteristics required for industrial-grade hardware.