The **5MFP2-R** is a specific type of electronic component—specifically a **fast-acting, axial-lead glass tube fuse**. It is widely used in power supplies, consumer electronics, and industrial equipment to provide overcurrent protection. Below is a detailed breakdown of its specifications and characteristics. ### 1. General Specifications | Feature | Specification | | :--- | :--- | | **Component Type** | Fuse | | **Series** | 5MFP (Fast Acting) | | **Current Rating** | 2 Amperes (2A) | | **Voltage Rating** | 250V AC | | **Material** | Glass Body / Nickel-plated Brass Caps | | **Mounting Type** | Through-hole (Axial Leaded) | | **Termination** | Pigtail / Wire Leads | --- ### 2. Key Technical Characteristics #### A. Fast-Acting (F) Response The "5MF" designation indicates that this is a **fast-acting** fuse. Unlike a "Slow-Blow" fuse, it is designed to open almost instantly when the current exceeds its rated value. This protects sensitive semiconductor components (like ICs or transistors) that cannot withstand even brief surges. #### B. Physical Dimensions The standard size for the 5MFP series is **5mm x 20mm**. * **Body Length:** 20mm * **Diameter:** 5mm * **Leads:** The "P" in the part number stands for "Pigtail" (axial leads), meaning it is soldered directly into a PCB rather than being placed in a fuse clip. #### C. Interrupting Rating This fuse typically has an interrupting rating of: * **35A at 250V AC** * **10,000A at 125V AC** This rating defines the maximum current the fuse can safely interrupt without physically exploding or arcing. --- ### 3. Part Number Breakdown The part number **5MFP2-R** can be decoded as follows: 1. **5MF**: Series name (Fast-acting, 5x20mm glass fuse). 2. **P**: Pigtail version (Axial leads attached). 3. **2**: The current rating (2 Amps). 4. **-R**: RoHS Compliant (Lead-free). --- ### 4. Common Applications * **Power Supplies:** Protecting the input stage from short circuits. * **Monitors/TVs:** Guarding internal circuitry. * **Industrial Controllers:** Used on PCBs where space is limited and a fuse holder is not desired. * **Chargers:** Providing a safety cutoff for battery charging circuits.