The **3SBP 15-R** is a specific type of electronic component, primarily a **Time-Lag (Slo-Blo) Fuse** part of the 3SBP series manufactured by Bel Fuse Inc. These fuses are designed for protecting sensitive electronic circuits from overcurrent conditions. --- ### 1. General Specifications The table below summarizes the technical parameters for the **3SBP 15-R**: | Parameter | Specification | | :--- | :--- | | **Part Number** | 3SBP 15-R | | **Type** | Glass Body / Cartridge Fuse | | **Current Rating** | 15 Amperes (A) | | **Voltage Rating** | 250V AC | | **Fuse Characteristic** | Slow Blow / Time Delay (T) | | **Mounting Type** | Through Hole (Pigtail Leads) | | **Dimensions** | 6.3mm x 32mm (1/4" x 1-1/4") | | **Termination** | Axial Leaded | | **RoHS Status** | Compliant (indicated by the "-R" suffix) | --- ### 2. Key Component Features #### A. Time-Delay (Slow Blow) Unlike "Fast-Acting" fuses that blow immediately upon reaching the current limit, the **Slow Blow** design allows for temporary "inrush" currents. This is essential for devices like motors or power supplies that draw a high amount of current for a fraction of a second when first turned on. #### B. Pigtail Leads (SBP Series) The "SBP" designation indicates that this fuse comes with **axial leads** (wire pigtails). * Standard 3AG fuses are placed in clips or holders. * The 3SBP is designed to be **soldered directly** onto a Printed Circuit Board (PCB). #### C. Glass Body Construction The transparent glass tube allows for easy visual inspection to determine if the internal filament has melted (blown). --- ### 3. Common Applications Due to its high current rating (15A) and time-delay characteristics, this part is typically found in: * **Power Supplies:** Protecting the primary AC input. * **Industrial Equipment:** Where high-start loads are common. * **Consumer Electronics:** Large appliances or audio amplifiers. * **Battery Chargers:** Handling fluctuating charging currents. --- ### 4. Safety and Compliance * **Interrupting Rating:** It is rated to safely interrupt a specific level of short-circuit current (typically 200A at 250V AC for this series). * **Agency Approvals:** Usually carries UL, CSA, and CE certifications for safety standards. ---