The **RJS 100-R STD** is a specific model of a **Radial Lead Micro Fuse**, manufactured by Bel Fuse Inc. It is part of the RJS series, which is known for its high-voltage rating and slow-blow (time-delay) characteristics. --- ## 1. Technical Specifications The following table summarizes the key electrical and physical parameters of the RJS 100-R STD: | Feature | Specification | | :--- | :--- | | **Current Rating** | 100 mA (0.1A) | | **Voltage Rating (AC)** | 600 V | | **Voltage Rating (DC)** | 600 V | | **Fuse Type** | Glass Tube / Radial Lead | | **Response Time** | Slow Blow / Time Delay | | **Interrupting Rating** | 60A @ 600V AC / 10kA @ 125V AC | | **Termination Style** | Through Hole (Radial Leads) | | **Material** | Glass Body / Matte Tin Plated Copper Leads | --- ## 2. Key Characteristics ### Slow-Blow (Time-Delay) Functionality Unlike "Fast-Acting" fuses, the RJS 100-R is designed to withstand temporary surges or inrush currents. This is critical in circuits where a motor or capacitor might cause a momentary spike that would otherwise blow a standard fuse. ### High Voltage Rating With a 600V AC/DC rating, this fuse is specifically engineered for high-voltage protection in a compact form factor. This makes it suitable for power supplies and industrial equipment. ### Radial Lead Design The "STD" in the part number usually refers to the **Standard** lead length/configuration. These are designed to be soldered directly onto a Printed Circuit Board (PCB), eliminating the need for a separate fuse holder. --- ## 3. Compliance and Standards The "R" in the part number signifies that the component is **RoHS compliant**. It also adheres to several international safety standards: * **UL Recognized:** UL 248-14 * **CSA Certified:** C22.2 No. 248.14 * **Lead-Free:** Complies with environmental regulations regarding hazardous substances. --- ## 4. Typical Applications * **Power Supplies:** Protecting input stages from overcurrent. * **Telecommunications:** Guarding against line surges. * **Industrial Controls:** Used in PLC (Programmable Logic Controller) modules. * **Lighting Ballasts:** Ensuring safety in high-voltage lighting circuits.