The **5HFP 160-R** is a specific type of electronic component—specifically a **subminiature, fast-acting fuse** manufactured by **Bel Fuse Inc.** This part is designed for surface-mount or through-hole applications where space is limited and protection against overcurrent is critical. --- ### 1. Key Technical Specifications The part number "5HFP 160-R" provides specific data about its electrical characteristics: | Feature | Specification | | :--- | :--- | | **Product Type** | Subminiature Fuse (Axial Lead) | | **Current Rating** | 160 mA | | **Voltage Rating (AC)** | 250 V | | **Characteristic** | Fast-Acting / Quick Acting (F) | | **Body Material** | Glass Body | | **RoHS Compliant** | Yes (indicated by the "-R" suffix) | | **Interrupting Rating** | 35A @ 250V AC / 10,000A @ 125V AC | --- ### 2. Physical Construction The **5HFP** series belongs to the 5x20mm or subminiature family. * **Dimensions:** Usually a small cylindrical glass body (approx. 5mm diameter). * **Leads:** The "P" in the part number often indicates **Pigtail (Axial) leads**, meaning it has wires extending from both ends for soldering directly onto a PCB (Printed Circuit Board). * **Visuals:** The glass body allows for visual inspection to see if the internal element has melted (blown). --- ### 3. Functional Behavior (Fast-Acting) As a **Fast-Acting** fuse, the 5HFP 160-R is engineered to open very quickly when it detects an overcurrent condition. * **Purpose:** It protects sensitive components (like ICs or transistors) that cannot withstand even a brief surge of high current. * **Contrast:** Unlike "Slow-Blow" fuses, this will not tolerate temporary inrush currents (like those seen when a motor starts). --- ### 4. Applications This fuse is commonly found in low-power electronic devices, including: 1. **Power Supplies:** Primary or secondary protection for small AC/DC adapters. 2. **Consumer Electronics:** Chargers, LED drivers, and audio equipment. 3. **Industrial Equipment:** Protection for sensors and control circuits. 4. **Test Instruments:** Used to protect internal circuitry from user error or short circuits. --- ### 5. Part Number Breakdown * **5HFP**: Series name (High Breaking Capacity, Fast-Acting, Pigtail). * **160**: Current rating (160 milliamperes). * **-R**: RoHS (Restriction of Hazardous Substances) compliant.