## Technical Overview of the 5HFP 200-R The **5HFP 200-R** is a specific type of **miniature fuse** belonging to the 5HFP series, typically manufactured by companies like **Bel Fuse Inc.** This component is designed for primary circuit protection in electronic devices. ### 1. Key Specifications The following table highlights the primary electrical and physical characteristics of this component: | Characteristic | Specification | | :--- | :--- | | **Current Rating** | 200 mA (0.2A) | | **Voltage Rating (AC)** | 250 V | | **Fuse Type** | Fast-Acting / Quick-Acting (F) | | **Body Material** | Glass Tube | | **Form Factor** | 5mm x 20mm (Standard Miniature) | | **Termination Style** | Axial Leaded (Pigtail) | | **RoHS Compliant** | Yes (indicated by the "-R" suffix) | --- ### 2. Detailed Component Breakdown #### A. Speed Characteristic: Fast-Acting The "F" in the series name signifies that this is a **Fast-Acting** fuse. Unlike "Slow-Blow" (Time-Lag) fuses, the 5HFP 200-R is designed to open almost instantly when the current exceeds its rated 200mA limit. This protects sensitive semiconductor components that cannot withstand overcurrent even for a few milliseconds. #### B. The "-R" Suffix The "-R" denotes **RoHS Compliance**. This means the part is manufactured without hazardous substances like lead, cadmium, or mercury, making it compliant with international environmental standards. #### C. Axial Leads (Pigtail) The "P" in the part number often indicates **Pigtails** (axial leads). Instead of being placed in a fuse clip, this fuse is designed to be soldered directly onto a Printed Circuit Board (PCB). This saves space and eliminates the contact resistance issues sometimes found with fuse holders. --- ### 3. Application Use Cases Due to its low amperage and fast response time, the 5HFP 200-R is commonly found in: * **Power Supplies:** Protecting the input stage of low-wattage adapters. * **Consumer Electronics:** Safeguarding internal circuitry in chargers, LED drivers, and audio equipment. * **Industrial Instrumentation:** Protecting sensitive sensors and control boards from short circuits. --- ### 4. Part Number Decoding To understand the 5HFP family better, here is a breakdown of the naming convention: | Segment | Meaning | | :--- | :--- | | **5HFP** | Series Name (Fast-Acting, 5x20mm, Axial Leads) | | **200** | Current Rating (200 milliamps) | | **-R** | RoHS Compliant |