The **CSBFB1M02J58-R1** is a surface-mount (SMD) ceramic resonator belonging to the **CSB series** manufactured by **Murata Electronics**. These components are primarily used as frequency-determining elements in microcomputer reference clocks. --- ### 1. Technical Specifications Below are the key electrical and physical characteristics of the component: | Feature | Specification | | :--- | :--- | | **Manufacturer** | Murata Electronics | | **Oscillating Frequency** | 1.024 MHz | | **Frequency Accuracy** | ±0.5% | | **Temperature Stability** | ±0.3% (-20°C to +80°C) | | **Resonant Impedance** | Max 50 $\Omega$ | | **Mounting Type** | Surface Mount (SMD) | | **Packaging** | Tape & Reel (R1 suffix) | ### 2. Physical Dimensions The "FB" designation refers to the specific package size. The CSBFB series is designed to be low-profile to fit thin electronic devices. * **Length:** 5.0 mm * **Width:** 3.1 mm * **Height:** 1.6 mm ### 3. Functional Description A ceramic resonator functions similarly to a quartz crystal but uses **piezoelectric ceramics** (typically lead zirconate titanate). * **Mechanism:** When a voltage is applied, the ceramic material mechanically vibrates at its resonant frequency (1.024 MHz). * **Comparison to Crystals:** * **Pros:** Smaller size, lower cost, and faster start-up time. * **Cons:** Lower frequency stability compared to high-precision quartz. * **Built-in Capacitors:** Unlike some 3-terminal resonators, this specific series often requires external load capacitors to complete the oscillation circuit, though this depends on the specific IC integration. ### 4. Common Applications Due to its 1.024 MHz frequency, this part is frequently found in: 1. **Remote Controls:** Used for carrier frequency generation. 2. **Clock Generators:** Providing a base timing signal for 8-bit or 16-bit microcontrollers. 3. **Communication Equipment:** Low-speed data transmission timing. 4. **Consumer Electronics:** Toys, small appliances, and household gadgets where high precision (like a watch) isn't strictly necessary. --- ### 5. Part Number Breakdown Understanding the Murata nomenclature: * **CSB**: Ceramic Resonator (kHz band). * **FB**: SMD Type package. * **1M02**: 1.02 MHz (Frequency). * **J**: Frequency tolerance code (±0.5%). * **R1**: Packaging code (Plastic Taping $\phi$180mm Reel).