The **CTSPI2D10F-R33N** is a low-profile, surface-mount (SMD) power inductor. It is designed for high-efficiency power conversion in compact electronic devices. Below is a detailed breakdown of its technical specifications and characteristics. --- ### 1. Technical Specifications The part number follows a specific nomenclature. Here are the core electrical parameters: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.33 µH (indicated by "R33") | | **Tolerance** | ±30% (indicated by "N") | | **DC Resistance (DCR)** | ~25 mΩ (Max) | | **Saturation Current (Isat)** | ~2.50 A - 3.00 A | | **Temperature Rise Current (Irms)** | ~2.10 A | | **Dimensions** | Approx. 3.0 x 3.0 x 1.0 mm | --- ### 2. Physical Construction The "F" in the series often denotes a **shielded construction** or a specific core material (usually ferrite). * **Core Material:** Ferrite core which provides low core losses at high frequencies. * **Shielding:** Magnetically shielded design. This is critical for high-density PCBs to prevent electromagnetic interference (EMI) with neighboring components. * **Form Factor:** Ultra-thin profile (1.0mm height), making it ideal for "wearable" or "mobile" electronics where vertical space is limited. --- ### 3. Part Number Breakdown Understanding the coding helps in identifying variants: | Segment | Meaning | | :--- | :--- | | **CTSPI** | Series prefix (Shielded Power Inductor) | | **2D10** | Dimensions (approx. 2.8mm - 3.0mm width/length, 1.0mm height) | | **F** | Internal design/Material code | | **R33** | Inductance value (R = decimal point; 0.33 microhenries) | | **N** | Tolerance code (N = ±30%) | --- ### 4. Common Applications Due to its low inductance and high current handling for its size, it is typically used in: * **DC-DC Converters:** Specifically high-frequency buck converters. * **Mobile Devices:** Smartphones, tablets, and handheld consoles. * **LCD Displays:** Powering driver circuits. * **Communication Equipment:** Small-scale networking modules. --- ### 5. Performance Considerations * **Self-Resonant Frequency (SRF):** At 0.33µH, this inductor has a very high SRF, allowing it to function efficiently at switching frequencies above 1MHz. * **Saturation:** The "Isat" rating is the point where inductance drops by a specific percentage (usually 30%). Ensure your peak circuit current does not exceed this value to avoid circuit instability.