The **FCR-BE-R** refers to a specific series of **Film Capacitors** (specifically Metallized Polypropylene Film) manufactured by companies like **Fujitsu** (or legacy components often found in industrial power electronics). These are primarily used for EMI (Electromagnetic Interference) suppression and power factor correction. Below is an overview of the electronic specifications, construction, and typical applications. --- ### 1. Technical Specifications The FCR-BE-R series is designed to handle high-frequency AC signals and provide stable capacitance over a wide temperature range. | Feature | Description | | :--- | :--- | | **Dielectric Material** | Metallized Polypropylene (PP) Film | | **Voltage Rating** | Typically 125VAC to 300VAC (Safety Class X2/Y2 common) | | **Capacitance Range** | 0.001µF to 2.2µF (standard range) | | **Tolerance** | ±10% (K) or ±20% (M) | | **Operating Temperature** | -40°C to +100°C | | **Encapsulation** | Flame retardant plastic case (UL 94V-0) with epoxy resin | --- ### 2. Internal Construction The "FCR" designation often implies a specific lead configuration and material build: 1. **Metallized Electrodes:** Aluminum or Zinc is vacuum-deposited directly onto the plastic film. This provides **self-healing** properties; if a dielectric breakdown occurs, the thin metal layer evaporates, preventing a short circuit. 2. **Radial Leads:** The "R" in the suffix usually denotes a **Radial lead** configuration, meaning the two wires emerge from the bottom of the component for through-hole PCB mounting. 3. **Box-Type Housing:** The rectangular plastic shell provides mechanical protection and humidity resistance. --- ### 3. Key Functions The FCR-BE-R components are generally utilized for the following electronic roles: * **EMI/RFI Suppression:** Placed across AC lines to filter out high-frequency noise generated by switching power supplies. * **Safety Capacitance:** Often rated as "X" or "Y" capacitors, meaning they are designed to fail safely without posing a fire or shock hazard to the user. * **Spark Quenching:** Used in RC snubbers to protect relay contacts and switches from arcing. * **Decoupling:** Filtering noise in heavy industrial machinery control boards. --- ### 4. Part Number Breakdown (Generic) While codes vary by manufacturer, the string typically follows this logic: * **FCR:** Series Code (Film Capacitor Radial). * **BE:** Case size or Dielectric code (Polypropylene). * **R:** Lead style (Radial). ---