The **5MT6-R** is a specific type of **glass tube miniature fuse** commonly used in consumer electronics, power supplies, and industrial equipment. It is part of the "5MT" series, which is characterized by its **medium time-delay** (slow-blow) characteristics. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Part Number** | 5MT 6-R | | **Fuse Type** | Glass Tube (Miniature) | | **Current Rating** | 6 Amperes (6A) | | **Voltage Rating (AC)** | 250V AC | | **Dimensions** | 5mm x 20mm | | **Speed/Characteristic** | Medium Time-Delay (Slow-Blow) | | **Material** | Glass Body, Nickel-Plated Brass Caps | | **RoHS Compliant** | Yes (Indicated by the "-R" suffix) | --- ### 2. Breakdown of the Part Name To understand this component, we can break down the nomenclature: * **5MT**: The series designation. It indicates a 5x20mm physical size and a specific melting curve (medium time-delay). * **6**: The rated current in Amperes. This fuse is designed to carry 6A continuously without blowing. * **-R**: Indicates **RoHS compliance**, meaning the part is manufactured without hazardous substances like lead. --- ### 3. Electronic Characteristics #### A. Time-Delay (Slow-Blow) Unlike "Fast-Acting" fuses, the 5MT6-R is designed to withstand a brief surge of current. This is critical for circuits with: * **Inrush Current:** Motors or power transformers that draw high current for a fraction of a second when turned on. * **Capacitive Loads:** Large capacitors charging up initially. #### B. Interrupting Rating This refers to the maximum current the fuse can safely stop without physically exploding or arcing. For a standard 5MT 6A fuse at 250V AC, the interrupting rating is typically around **100A to 200A**. #### C. Voltage Drop Like all fuses, there is a slight internal resistance. At 100% rated current, there is a measurable voltage drop across the fuse, which is important for precision low-voltage circuits. --- ### 4. Typical Applications * **Power Supplies:** Protecting the input stage of AC/DC adapters. * **Consumer Electronics:** Televisions, audio amplifiers, and kitchen appliances. * **Industrial Controls:** Small motor controllers and PLC protection. ---