The **CTPH-16-R/Q** is a high-performance, shielded common mode choke (inductor) typically used in power supply filtering and signal line noise suppression. It is part of a series designed for high-density mounting and electromagnetic interference (EMI) reduction. --- ### 1. Technical Specifications The following table summarizes the key electrical and physical characteristics typical for this component series: | Parameter | Specification (Typical) | | :--- | :--- | | **Component Type** | Common Mode Choke / EMI Filter | | **Mounting Type** | Surface Mount (SMD) | | **Inductance Range** | 10µH to 1000µH (depending on specific sub-code) | | **Rated Current** | 0.5A to 3.0A (application specific) | | **DC Resistance (DCR)** | Low (mΩ range to minimize power loss) | | **Operating Temperature** | -40°C to +125°C | | **Housing** | Shielded construction for low magnetic leakage | --- ### 2. Core Functional Components The "Electronic Parts" within the CTPH-16-R/Q consist of three primary elements: 1. **Ferrite Core:** The "heart" of the component. It uses a high-permeability magnetic material that provides high impedance to high-frequency noise while allowing DC or low-frequency signals to pass with minimal attenuation. 2. **Copper Windings:** Dual windings (bifilar or sectional) are wrapped around the core. In a common-mode configuration, these windings are phased so that magnetic fields from noise cancel each other out. 3. **Shielded Base/Case:** The "R/Q" designation often refers to the specific molding or shielding style, ensuring that the magnetic flux is contained and does not interfere with adjacent components on the PCB. --- ### 3. Application Use Cases This part is commonly found in the following electronic circuits: * **DC-DC Converters:** To filter out switching noise from the power rail. * **USB/CAN Bus Lines:** To maintain signal integrity by suppressing common-mode electromagnetic noise. * **AC Adapters:** Used in the input stage to comply with global EMI/EMC regulations (like FCC or CE). * **Industrial Electronics:** Providing clean power to sensitive sensors. --- ### 4. Part Number Breakdown (General) * **CTPH:** Series identifier (High-current, Shielded Power inductor/choke). * **16:** Dimensional code (referring to the footprint size, e.g., 16mm or a proprietary sizing scale). * **R/Q:** Material or Packaging designation (often denotes "RoHS compliant" or specific "Tape & Reel" orientation). ---