### 5MTP300-R Overview The **5MTP300-R** is a specific type of electronic component, specifically a **radial leaded subminiature fuse**. It belongs to the 5MTP series, which is characterized by its medium time-delay (slow-blow) characteristics and glass body construction. --- ### Technical Specifications The following table outlines the primary electrical and physical characteristics of the 5MTP300-R: | Feature | Specification | | :--- | :--- | | **Component Type** | Radial Leaded Fuse | | **Current Rating** | 300 mA (0.3A) | | **Voltage Rating (AC)** | 250V AC | | **Characteristic** | Medium Time-Delay (Slow-Blow) | | **Body Material** | Glass | | **Termination Style** | Radial Lead (Through-hole) | | **RoHS Compliant** | Yes (indicated by the "-R" suffix) | --- ### Key Electronic Functions 1. **Overcurrent Protection**: The primary role of this part is to protect a circuit from excessive current. If the current exceeds 300mA for a specific duration, the internal element melts, breaking the circuit. 2. **Slow-Blow (Time-Delay)**: Unlike "Fast-Acting" fuses, the 5MTP300-R is designed to withstand temporary surges or inrush currents (common in motors or power supplies) without blowing immediately. 3. **Radial Lead Design**: The "Radial" configuration means the wire leads come out of one side (usually the bottom), making it suitable for vertical mounting on Printed Circuit Boards (PCBs) where horizontal space is limited. --- ### Common Applications Due to its 300mA rating and slow-blow nature, this part is frequently found in: * **Power Supplies**: Protecting the primary side of small power adapters. * **Consumer Electronics**: Chargers, televisions, and audio equipment. * **Industrial Controllers**: Protecting sensitive logic boards from power spikes. * **Battery Chargers**: Where initial connection might cause a brief current spike. --- ### Comparison: 5MTP vs. 5MT It is important to note the distinction in the series: * **5MT**: Standard 5x20mm cartridge fuses (no leads). * **5MTP**: The "P" usually denotes **Pigtail** or **Leaded**, meaning the fuse is meant to be soldered directly into the board rather than placed in a fuse holder.