The part number **045-3000-R** typically refers to a high-voltage, surface-mount (SMD) gas discharge tube (GDT) or a specialized fuse/circuit protection component, most commonly associated with manufacturers like **Littelfuse**. Below is a detailed technical breakdown of this electronic component. --- ## 1. Component Overview The 045 series is generally categorized as a **NANO²® Very Fast-Acting Surface Mount Fuse** or a specialized surge protection device depending on the specific product line prefix. However, based on standard industry numbering for the "045-3000-R" suffix, it is a **3 Amp High-Current Fuse**. ### Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Current Rating** | 3.0 Amperes | | **Voltage Rating (AC/DC)** | 125V | | **Fuse Type** | Very Fast-Acting (F) | | **Package / Case** | 2410 (6125 Metric) / Nano² | | **Termination Style** | Surface Mount (SMD/SMT) | | **RoHS Compliant** | Yes (indicated by the "-R" suffix) | | **Operating Temperature** | -55°C to +125°C | --- ## 2. Construction and Materials The "R" at the end of the part number signifies that the part is **RoHS compliant** and lead-free, adhering to environmental safety standards. * **Body:** Ceramic or high-temperature composite material. * **Terminals:** Gold-plated or Sn (Tin) plated caps for high solderability. * **Element:** A precision-engineered wire or strip designed to melt at a specific thermal threshold. --- ## 3. Typical Applications This part is designed for space-constrained applications that require reliable overcurrent protection. 1. **Industrial Electronics:** Power supplies, motor control boards, and sensors. 2. **Consumer Electronics:** LCD/LED monitors, notebooks, and gaming consoles. 3. **Telecommunications:** Base stations, line cards, and network switches. 4. **Medical Equipment:** Portable diagnostic tools and monitoring systems. --- ## 4. Performance Characteristics As a **Very Fast-Acting** fuse, the 045-3000-R is designed to open almost instantaneously when an overcurrent condition occurs. This protects sensitive downstream components (like ICs or Microprocessors) from damage. * **Interrupting Rating:** Usually 50A @ 125VAC/DC. * **Nominal Cold Resistance:** Low internal resistance to minimize voltage drop across the component. ---