The **C519-2.25-R** is a specific model of a glass tube fuse within the C519 series, manufactured by Eaton (formerly Bussmann). It is a slow-blow (time-delay) fuse designed for protecting electronic circuits from overcurrent conditions. --- ## 1. Technical Specifications The following table highlights the primary electrical and physical characteristics of the C519-2.25-R: | Characteristic | Specification | | :--- | :--- | | **Series** | C519 | | **Current Rating** | 2.25 Amperes | | **Voltage Rating (AC)** | 250 Volts | | **Fuse Type** | Glass Tube | | **Response Characteristic** | Time-Delay (Slow-Blow) | | **Dimensions** | 5mm x 15mm | | **Material** | Glass body, Brass endcaps (Nickel plated) | | **Termination Style** | Ferrule (Cartridge) | | **RoHS Compliant** | Yes (indicated by the "-R" suffix) | --- ## 2. Key Features and Behavior ### Time-Delay (Slow-Blow) Function The "Time-Delay" feature is critical for circuits that experience temporary **inrush currents**. Unlike a fast-acting fuse, the C519-2.25-R will not blow immediately if the current slightly exceeds 2.25A for a fraction of a second (common during motor startups or capacitor charging). It only opens the circuit if the overload persists. ### Physical Build * **Size:** At 5mm x 15mm, it is smaller than the standard 3AG (6x32mm) fuses, making it ideal for compact printed circuit boards (PCBs). * **Visual Inspection:** The clear glass body allows for easy visual verification to see if the internal filament has melted. --- ## 3. Identification Code Breakdown The part number can be decoded as follows: * **C519**: The series designation (5x15mm glass tube, time-delay). * **2.25**: The rated current in Amperes. * **-R**: Indicates RoHS compliance (Lead-free). --- ## 4. Common Applications Due to its slow-acting nature and compact size, this part is typically found in: 1. **Consumer Electronics:** Power supplies for monitors and televisions. 2. **Industrial Equipment:** Small motor controllers and solenoid circuits. 3. **Chargers:** Laptop power adapters and battery charging stations.