## Overview of the 5HTP500-R The **5HTP500-R** is a specific model of a **Miniature Cartridge Fuse**. It belongs to the 5HTP series, which is characterized by its high-breaking capacity and time-lag (slow-blow) functionality. These fuses are commonly used in primary circuit protection for power supplies, chargers, and consumer electronics. --- ### Technical Specifications The following table outlines the core electronic parameters of the 5HTP500-R: | Feature | Specification | | :--- | :--- | | **Current Rating** | 500 mA (0.5A) | | **Voltage Rating (AC)** | 250 V | | **Characteristic** | Time-Lag (Slow Blow) / "T" | | **Body Material** | Glass Body | | **Interrupting Rating** | 1500A @ 250V AC | | **Dimensions** | 5mm x 20mm | | **Terminal Type** | Pigtail (Axial Leaded) | | **RoHS Compliant** | Yes | --- ### Key Electronic Components & Features 1. **Axial Leads (Pigtails):** Unlike standard 5x20mm glass fuses that snap into a clip, the "P" in the part number indicates **Pigtail Leads**. These are wires soldered to the end caps, allowing the fuse to be soldered directly onto a Printed Circuit Board (PCB). 2. **Time-Lag (T) Mechanism:** The internal element is designed to withstand short-duration surges (like an inrush current when a device is first turned on) without blowing. It only opens the circuit if the 500mA threshold is exceeded for a sustained period. 3. **High Breaking Capacity:** This fuse is rated to safely interrupt currents as high as 1500 Amperes at 250VAC. This prevents the fuse from exploding or arcing over during a massive short circuit. 4. **Glass Body Construction:** The transparent glass allows for easy visual inspection to see if the internal wire filament has melted, though electrical testing with a multimeter is always recommended. --- ### Common Applications * **Power Adapters:** Protecting against internal component failure. * **LED Drivers:** Handling the initial surge when LEDs are powered. * **Industrial Controls:** Low-current protection for sensitive logic boards.