The **RJS100-R** is a specific model of a **Radial Leaded Fuse** within the RJS series, manufactured by Bel Fuse Inc. It is designed for overcurrent protection in various electronic circuits. --- ## 1. Technical Specifications The "100" in the part number typically denotes the amperage rating (100mA), and the "-R" suffix indicates compliance with RoHS standards. | Feature | Specification | | :--- | :--- | | **Type** | Fast-acting (Quick Acting) | | **Current Rating** | 100mA | | **Voltage Rating (AC)** | 600V | | **Voltage Rating (DC)** | 150V | | **Mounting Type** | Through-Hole (Radial Leads) | | **Body Material** | Glass | | **Standards** | UL, CSA, RoHS 6/6 Compliant | --- ## 2. Key Component Characteristics ### A. Construction * **Glass Body:** The internal fuse element is housed in a cylindrical glass tube, which allows for visual inspection of the filament. * **Radial Leads:** Unlike traditional axial fuses (where leads come out of both ends), radial leads exit from one side of the component, allowing for vertical mounting on a PCB to save space. ### B. Speed (Fast-Acting) The RJS series is "Fast-Acting." This means the fuse is designed to open almost instantly when an overcurrent condition occurs. It is used to protect sensitive components that cannot tolerate even brief surges (unlike "Slow-Blow" fuses used for motors). ### C. High Voltage Rating A standout feature of the RJS100-R is its **600VAC** rating. This makes it suitable for high-voltage power supplies and industrial equipment where standard 125V or 250V fuses are insufficient. --- ## 3. Typical Applications Because of its high voltage rating and fast response time, the RJS100-R is commonly found in: * **Telecommunications:** Protection for line cards and networking gear. * **Power Supplies:** Primary side protection for AC/DC converters. * **Instrumentation:** Protecting sensitive measuring circuits. * **Industrial Controls:** High-voltage control boards. --- ## 4. Part Number Breakdown ```text RJS 100 - R | | | | | +-- RoHS Compliant | +------- Current Rating (100 = 100mA) +----------- Series Name (Radial Lead, Glass Tube) ```