## Product Overview: CSBFB800KJ58-R1 The **CSBFB800KJ58-R1** is a high-precision electronic component manufactured by **Murata Electronics**. It belongs to the **Ceramic Resonator** family, specifically the CSBFB series. These components are primarily used to provide a stable clock signal or frequency reference for microprocessors and integrated circuits. --- ### 1. Key Technical Specifications The following table outlines the fundamental electrical and physical characteristics of this part: | Parameter | Specification | | :--- | :--- | | **Component Type** | Ceramic Resonator | | **Frequency** | 800 kHz | | **Frequency Tolerance** | ±0.5% | | **Resonant Impedance** | 40 $\Omega$ (Max) | | **Temperature Range** | -20°C to +80°C | | **Mounting Type** | Surface Mount (SMD) | | **Dimensions** | 5.0mm x 3.0mm | | **Packaging** | Tape & Reel (R1 suffix) | --- ### 2. Functional Description Ceramic resonators like the CSBFB800KJ58-R1 utilize the mechanical resonance of piezoelectric ceramics (usually Lead Zirconate Titanate). * **Piezoelectric Effect:** When an electrical signal is applied, the ceramic vibrates mechanically. Conversely, mechanical vibration produces an electrical signal. * **Role in Circuits:** It acts as the "heartbeat" of an electronic system. While less precise than Quartz Crystals, ceramic resonators are favored for their: * Faster start-up times. * Smaller physical footprint. * Lower cost. * Built-in load capacitors (in many models), which saves PCB space. --- ### 3. Application Areas This specific 800 kHz frequency is commonly found in: * **Microcontrollers (MCUs):** Providing clock signals for low-speed processing tasks. * **Remote Controls:** Infrared (IR) transmission timing. * **Consumer Electronics:** Household appliances (microwaves, washing machines) where extreme clock precision is not required. * **Automotive:** Non-safety critical systems like body control modules or infotainment interfaces. --- ### 4. Circuit Diagram Representation In a typical Pierce Oscillator circuit, the resonator is connected between the input and output of an inverter: ```c +-------[ Inverter ]-------+ | | | [CSBFB800KJ58-R1] | -----+-----------[ ]------------+----- | | [C1] [C2] | | Ground Ground ``` *(Note: Many Murata CSBFB models feature internal capacitors C1 and C2, simplifying the design further.)*