The **BK/PCE-5-R** is a specific model of subminiature fuse manufactured by **Eaton (Bussmann Series)**. It is widely used in power supplies, chargers, and consumer electronics where space is at a premium and reliable overcurrent protection is required. --- ## 1. Component Overview The PCE series consists of radial-leaded, through-hole fuses. The "R" suffix indicates that the part is **RoHS compliant** (lead-free). ### Key Specifications | Feature | Specification | | :--- | :--- | | **Current Rating** | 5 Amperes | | **Voltage Rating (AC)** | 125 VAC | | **Voltage Rating (DC)** | 125 VDC | | **Interrupt Rating** | 50A at 125 VAC/DC | | **Mounting Type** | Through-hole (Radial Leads) | | **Fuse Type** | Fast-Acting | | **Body Material** | High-temperature Plastic / Wire-in-air | --- ## 2. Technical Characteristics ### Fast-Acting Performance Unlike "Slo-Blo" (Time-delay) fuses, the PCE series is designed to open very quickly when an overcurrent condition occurs. This protects sensitive semiconductor components from spikes. ### Physical Dimensions The "PCE" series typically uses a small, rectangular or cylindrical body design: * **Lead Spacing:** Standardized for PCB insertion (approx. 5.08mm). * **Encapsulation:** The body is usually made of a thermoplastic that can withstand wave soldering temperatures. ### Typical Applications * **Power Supplies:** Protecting the input/output stages of AC/DC adapters. * **Consumer Electronics:** Televisions, monitors, and gaming consoles. * **Industrial:** LED lighting drivers and small battery chargers. --- ## 3. Part Number Breakdown The part number **BK/PCE-5-R** can be decoded as follows: | Code | Meaning | | :--- | :--- | | **BK/** | Packaging prefix (typically indicates bulk packaging). | | **PCE** | Series identifier (Subminiature Radial Fuse). | | **5** | Current rating in Amperes (5A). | | **-R** | RoHS compliance (Lead-Free). | ---