The **8250-R12K-RC** is a high-frequency, conformal coated inductor manufactured by **Bourns Inc.** This specific part belongs to the 8250 series of axial-leaded RF chokes. --- ### 1. Key Technical Specifications The part number encodes specific characteristics of the component. Below are the primary electrical and physical specifications: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.12 µH | | **Tolerance** | ±10% | | **Current Rating (Max)** | 1350 mA (1.35 A) | | **DC Resistance (DCR)** | 0.08 Ohms Max | | **Self-Resonant Frequency (SRF)** | 650 MHz | | **Q Factor (Min)** | 45 | | **Termination Style** | Axial Leaded | | **Operating Temperature** | -55°C to +105°C | --- ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying variants within the same series: - **8250**: The series designation (Conformal Coated RF Choke). - **R12**: The inductance value. "R" acts as a decimal point ($0.12$). - **K**: The tolerance code ($K = \pm10\%$; $J = \pm5\%$). - **RC**: RoHS Compliant. --- ### 3. Construction and Features * **Core Material:** This specific low-inductance value (0.12 µH) typically utilizes a **Phenolic core** (non-magnetic), which allows for high SRF and stability at high frequencies. * **Coating:** It is protected by an epoxy conformal coating, providing excellent moisture resistance and electrical insulation. * **Form Factor:** The axial lead design makes it suitable for through-hole PCB assembly or point-to-point wiring. --- ### 4. Common Applications The 8250-R12K-RC is designed primarily for Radio Frequency (RF) applications where filtering or impedance matching is required: 1. **RF Interference (RFI) Suppression:** Used to block high-frequency noise in communication equipment. 2. **Decoupling:** Filtering power supply lines to prevent high-frequency signals from interfering with sensitive circuits. 3. **Oscillators and Amplifiers:** Used in the tuning stages of RF circuits. 4. **Test Equipment:** Found in signal generators and analyzers due to its high Q-factor and stability. --- ### 5. Equivalent/Alternative Considerations If you are looking for alternatives, you must match the **SRF (Self-Resonant Frequency)** and the **Current Rating**, as these are critical in high-frequency designs. Common manufacturers with similar series include Vishay (IM series) and TDK.