The **RL0809-333-R** is a specific type of **Radial Leaded Power Inductor** (Fixed Inductor). This component is commonly used in electronic circuits for energy storage, filtering, and noise suppression. --- ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify its core specifications: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **RL0809** | Series/Size | Radial Lead, approx. 8.5mm Diameter x 9.5mm Height | | **333** | Inductance Value | 33,000 µH (or 33 mH) | | **-R** | RoHS Compliance | Lead-free and environmentally compliant | --- ### 2. Technical Specifications While exact values can vary slightly by manufacturer (such as Bourns), the typical parameters for this specific part include: * **Inductance:** 33 mH (33,000 Microhenries). * **Tolerance:** Typically ±10% (K). * **Core Material:** Ferrite (high permeability, low loss). * **Termination Style:** Through-hole (Radial leads). * **DC Resistance (DCR):** Usually relatively high due to the large number of wire turns required for 33mH. * **Saturation Current:** Low compared to smaller inductors, as inductance increases, the current handling capacity generally decreases. --- ### 3. Physical Characteristics * **Form Factor:** Cylindrical shape with two wires protruding from the bottom (Radial). * **Coating:** Often wrapped in UL-shrink tubing for insulation and physical protection. * **Mounting:** Designed for through-hole soldering on Printed Circuit Boards (PCBs). --- ### 4. Common Applications Due to its high inductance value (33mH), this part is primarily used in: 1. **EMI/RFI Filtering:** Suppressing high-frequency noise in power lines. 2. **Power Supplies:** Used in DC-DC converters and switching power supplies for smoothing current. 3. **Signal Processing:** Acting as a low-pass filter to allow DC while blocking AC noise. 4. **Telecom Equipment:** General decoupling and line filtering. --- ### 5. Summary Table | Parameter | Value | | :--- | :--- | | **Component Type** | Radial Fixed Inductor | | **Inductance** | 33 mH | | **Mounting Type** | Through-Hole | | **Lead Spacing** | ~5.0 mm | | **Operating Temp** | -40°C to +125°C (Typical) |