The **C518-5-R** is a specific electronic component belonging to the **fuses** category, manufactured primarily by **Eaton (formerly Bussmann)**. It is a subminiature, glass tube, fast-acting fuse designed for PCB (Printed Circuit Board) mounting. --- ### 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the C518-5-R: | Parameter | Specification | | :--- | :--- | | **Current Rating** | 5 Amperes (5A) | | **Voltage Rating (AC)** | 125 Volts AC | | **Voltage Rating (DC)** | 32 Volts DC | | **Fuse Type** | Fast-Acting (Fast Blow) | | **Body Material** | Glass Tube with Brass Endcaps | | **Mounting Type** | Through-Hole (Axial Leaded) | | **Interrupt Rating** | 100A at 125VAC | | **Dimensions** | 5mm x 15mm (approx. 2AG size) | | **RoHS Compliant** | Yes (indicated by the "-R" suffix) | --- ### 2. Key Features and Component Breakdown #### A. Fast-Acting Response Unlike "Slow-Blow" fuses, the C518-5-R is designed to open the circuit very quickly when an overcurrent condition occurs. This is critical for protecting sensitive semiconductor components that cannot tolerate even brief surges. #### B. Axial Leads The "C518" series typically features axial leads (wire leads extending from the ends). This allows the fuse to be soldered directly into a PCB without the need for a separate fuse clip or holder, saving space and reducing assembly costs. #### C. Glass Construction The transparent glass body allows for easy visual inspection. If the fuse has blown due to a major short circuit, the internal wire filament will be visibly broken or the glass may show scorch marks. --- ### 3. Common Applications Due to its small form factor and fast response time, the C518-5-R is commonly found in: * **Consumer Electronics:** Power supplies for laptops and small appliances. * **LED Lighting:** Protection for driver circuits. * **Telecommunications:** Protection for line cards and networking equipment. * **Chargers:** Mobile device adapters and battery charging stations. --- ### 4. Part Number Breakdown * **C518:** The series designation (5mm x 15mm axial leaded glass fuse). * **5:** The current rating (5 Amps). * **-R:** Indicates RoHS compliance (Lead-free and environmentally friendly). ---