The **TP4210-150M-R** is a high-performance, shielded power inductor typically manufactured by companies like **Coiltronics (Eaton)**. It belongs to the TP4210 series, designed for high power density and efficiency in DC-DC converter applications. --- ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the specific characteristics of the component: | Segment | Meaning | Value/Description | | :--- | :--- | :--- | | **TP4210** | Series Name | Low profile, high power density inductors | | **150** | Inductance Code | **15 µH** (15 followed by 0 zeros) | | **M** | Tolerance | **±20%** | | **R** | RoHS Compliance | Fully compliant with environmental standards | --- ### 2. Key Technical Specifications The electrical behavior of the TP4210-150M-R is defined by its current handling and thermal limits: * **Inductance:** 15.0 µH * **DC Resistance (DCR):** Typically low (approx. 0.050 - 0.070 Ω) to minimize power loss. * **Isat (Saturation Current):** The current level where inductance drops by a specific percentage (usually 30%). For this series, it is optimized for high peak loads. * **Irms (RMS Current):** The continuous current that causes a specific temperature rise (usually 40°C) above ambient. * **Operating Temperature:** Generally rated from -40°C to +125°C. --- ### 3. Physical & Design Features * **Shielded Construction:** It features a magnetic shield to reduce Electromagnetic Interference (EMI), making it suitable for noise-sensitive circuits. * **Surface Mount Device (SMD):** Designed for automated PCB assembly. * **Material:** Often uses a ferrite core for high efficiency at switching frequencies up to several megahertz (MHz). --- ### 4. Common Applications Due to its balance of size and current capability, this inductor is commonly found in: 1. **Buck/Boost Converters:** Voltage regulation for mobile devices. 2. **LED Drivers:** Providing steady current for high-brightness LEDs. 3. **Graphic Cards & Motherboards:** Localized power rails (Point of Load). 4. **Network Equipment:** Routers and switches requiring stable power delivery. ---