The **5VTP6.3-R** is a specific model of electronic fuse manufactured by **Bel Fuse Inc.** It belongs to the **5VTP series**, which consists of subminiature, radial leaded, time-delay (slow-blow) fuses. These are commonly used in power supplies and consumer electronics to protect circuits from overcurrent conditions. --- ### Technical Specifications The following table outlines the primary electrical and physical characteristics of the 5VTP6.3-R: | Feature | Specification | | :--- | :--- | | **Current Rating** | 6.3 Amperes (A) | | **Voltage Rating (AC)** | 250 Volts (VAC) | | **Fuse Type** | Time-Delay / Slow-Blow (T) | | **Mounting Type** | Radial Lead (Through-Hole) | | **Interrupt Rating** | 63A @ 250V AC | | **Operating Temperature** | -55°C to +125°C | | **Body Material** | Thermoplastic Body / Copper Leads | | **Compliance** | RoHS 6 Compliant, Lead-Free | --- ### Component Breakdown #### 1. Part Number Decoding Understanding the nomenclature helps identify the exact specs: * **5VTP**: The series name (Radial Lead, Time-Delay). * **6.3**: The rated current capacity (6.3A). * **-R**: Indicates the part is RoHS compliant. #### 2. Slow-Blow (Time-Delay) Characteristic Unlike "Fast-Acting" fuses, the **5VTP6.3-R** is designed to withstand temporary surges or "inrush currents." This is crucial for devices like motors or power transformers that draw a high amount of current for a fraction of a second when turned on. The fuse will only blow if the overcurrent persists. #### 3. Form Factor It features a **radial lead** design, meaning the two wires (leads) come out of the same side of the cylindrical body. This allows it to be mounted vertically on a Printed Circuit Board (PCB), saving horizontal space compared to traditional glass tube fuses. #### 4. Safety Standards This component is typically certified by international safety bodies: * **UL/cUL**: Recognised for North American safety standards. * **VDE/Semko**: Standardized for European electrical safety. --- ### Typical Applications * **Power Supplies:** Protecting the primary side of AC/DC adapters. * **Battery Chargers:** Preventing fire hazards during charging faults. * **Consumer Electronics:** Used in TVs, monitors, and white goods. * **Industrial Controllers:** Protecting sensitive circuitry from line voltage spikes.