The **CTS2F-R12J** is a high-quality, axial-leaded fixed inductor manufactured by **Bourns** (specifically from their JW Miller line). It is designed for use in radio frequency (RF) circuits and general-purpose decoupling. --- ### ## 1. Technical Specifications The part number "R12J" indicates its inductance value and tolerance. Below is a breakdown of its core parameters: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.12 µH (Microhenries) | | **Tolerance** | ±5% (denoted by the 'J') | | **Current Rating (Max)** | 1100 mA (1.1 A) | | **DC Resistance (Max)** | 0.08 Ohms | | **Self-Resonant Frequency (Min)** | 500 MHz | | **Q Factor (Min)** | 50 (at 25.2 MHz) | | **Operating Temperature** | -55°C to +105°C | --- ### ## 2. Part Number Breakdown Understanding the nomenclature helps in identifying variants within the CTS2F series: * **CTS2F:** Series prefix (Conformal Coated Axial Inductor). * **R12:** The inductance value. "R" acts as a decimal point ($0.12$). * **J:** Tolerance code ($J = \pm5\%$, $K = \pm10\%$, $M = \pm20\%$). --- ### ## 3. Key Features and Applications The CTS2F series is characterized by its **conformal coating**, which provides moisture resistance and mechanical durability. #### **Physical Characteristics** * **Package:** Axial leaded (through-hole). * **Core Material:** Phenolic or Ferrite (depending on the specific inductance range; lower values like 0.12µH typically use Phenolic cores for high-frequency stability). * **Finish:** Epoxy resin coating. #### **Common Uses** 1. **RF Coupling/Decoupling:** Filtering out high-frequency noise from power lines in radio equipment. 2. **Signal Conditioning:** Used in LC filters and oscillators. 3. **Consumer Electronics:** Power supplies, televisions, and communication devices. --- ### ## 4. Schematic Representation In a circuit diagram, the part is represented as a standard inductor: ```text L1 ---(uuuuu)--- 0.12µH ``` ---