The **CTC3F-R33J** is a high-reliability fixed inductor commonly used in radio frequency (RF) circuits, power supplies, and signal filtering applications. It is manufactured by **Central Technologies**. ### Technical Specifications Below are the primary electrical and physical characteristics of the CTC3F-R33J: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.33 µH | | **Tolerance** | ±5% (indicated by 'J') | | **Current Rating (Max)** | 1,400 mA (1.4A) | | **DC Resistance (Max)** | 0.09 Ohms | | **Self-Resonant Frequency (Min)** | 400 MHz | | **Q Factor (Min)** | 45 | | **Package Type** | Axial Leaded (Through-hole) | --- ### Key Features and Construction #### 1. Part Number Breakdown * **CTC3F**: The series identifier (Conformal Coated Inductor). * **R33**: The inductance value (R acts as a decimal point, 0.33). * **J**: The tolerance code (J = ±5%). #### 2. Physical Design * **Conformal Coating:** The inductor is treated with an epoxy resin coating. This provides moisture resistance and insulation, protecting the copper windings from environmental degradation. * **Axial Leads:** Designed for through-hole mounting on printed circuit boards (PCBs). The leads are typically composed of tinned copper for easy soldering. #### 3. Performance Characteristics * **High Q Factor:** This indicates low energy loss relative to the energy stored, making it suitable for high-frequency tuning and filtering. * **High Current Handling:** For its small size, it can handle up to 1.4A, which is significant for power decoupling applications. --- ### Common Applications The CTC3F-R33J is typically found in the following electronic circuits: * **RF Chokes:** Used to block high-frequency alternating current (AC) while allowing direct current (DC) to pass. * **Decoupling:** Filtering noise from power supply lines to sensitive integrated circuits. * **Communication Equipment:** Used in oscillators and signal processing stages of transmitters and receivers.