The **5HF1.6-R** is a specific type of **Miniature Glass Tube Fuse** commonly used in consumer electronics, power supplies, and industrial equipment. It is part of the "5HF" series, which is characterized by its fast-acting response time and standardized physical dimensions. --- ### ## Technical Specifications Below are the primary electrical and physical characteristics of the 5HF1.6-R: | Feature | Specification | | :--- | :--- | | **Part Number** | 5HF1.6-R | | **Current Rating** | 1.6 Amperes (1.6A) | | **Voltage Rating** | 250V AC | | **Fuse Type** | Fast-Acting / Quick-Acting (F) | | **Material** | Glass Body, Nickel-plated Brass Caps | | **Dimensions** | 5mm x 20mm (Standard Miniature size) | | **Interrupting Rating** | 1500A @ 250V AC | | **RoHS Compliant** | Yes (indicated by the "-R" suffix) | --- ### ### Key Electronic Characteristics #### 1. Fast-Acting Response (F-Curve) Unlike "Slow-Blow" fuses, the 5HF1.6-R is designed to open almost instantly when the current exceeds its rated 1.6A. This protects sensitive electronic components (like ICs and transistors) that cannot withstand even brief overcurrent surges. #### 2. Breaking Capacity (Interrupting Rating) This fuse has a high breaking capacity (typically 1500A). This means it can safely interrupt a short circuit of up to 1500 Amperes without the glass tube shattering or causing an explosion. #### 3. Low Internal Resistance Because it is designed for 1.6A, the internal filament has low resistance to ensure minimal voltage drop across the fuse during normal operation, maintaining the efficiency of the device it protects. --- ### ### Application and Use Cases The 5HF1.6-R is typically found in: * **Power Supplies:** Protecting the input stage of AC/DC adapters. * **Consumer Electronics:** Televisions, audio amplifiers, and chargers. * **Test Equipment:** Multimeters and oscilloscopes often use this size and rating for internal protection. * **Safety Standards:** It usually conforms to IEC 60127-2 standards, making it a globally recognized safety component. --- ### ### Deciphering the Part Number * **5HF**: The series name (Fast-acting, High breaking capacity). * **1.6**: The rated current (1.6 Amps). * **-R**: Indicates compliance with **RoHS** (Restriction of Hazardous Substances) standards (Lead-free).