The **TMPIT07030AF-R33M** is a high-performance, shielded power inductor typically used in DC-DC converter applications. It belongs to the **TMPIT series**, which is characterized by its molded construction and high efficiency. --- ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the component's physical and electrical properties: | Segment | Code | Description | | :--- | :--- | :--- | | **Series** | TMPIT | Molded Power Inductor (Automotive/High-Reliability Grade) | | **Size** | 07030 | Dimensions: approx. 7.0 x 7.0 x 3.0 mm | | **Material** | AF | Specific core material/process (Alloy Powder) | | **Inductance** | R33 | 0.33 microhenries ($\mu H$) | | **Tolerance** | M | $\pm 20\%$ | --- ### 2. Key Technical Specifications Based on standard industry parameters for this specific part: * **Inductance:** 0.33 $\mu H$ * **DC Resistance (DCR):** Very low (typically $< 3.0 \, m\Omega$); minimizes heat and power loss. * **Saturation Current ($I_{sat}$):** The current at which inductance drops by a specific percentage (e.g., 30%). For this size, it is usually between **20A to 30A**. * **Heat Rating Current ($I_{rms}$):** The current that causes a $40^\circ C$ temperature rise. * **Operating Temperature:** Generally ranges from $-40^\circ C$ to $+125^\circ C$ or higher. --- ### 3. Core Features 1. **Molded Construction:** The coil is encapsulated in a metallic alloy powder. This eliminates "acoustic noise" (buzzing) and provides excellent magnetic shielding. 2. **Low Profile:** The "30" in the part number indicates a 3.0mm height, making it suitable for compact electronics. 3. **Soft Saturation:** Unlike ferrite cores, the alloy powder core saturates gradually, providing a safety margin for current spikes. 4. **Shielded Design:** It has very low EMI (Electromagnetic Interference) leakage, which is critical for sensitive high-frequency circuits. --- ### 4. Typical Applications This component is commonly found in: * **Voltage Regulator Modules (VRMs):** Used in CPU/GPU power delivery. * **DC-DC Converters:** Buck, Boost, and Buck-Boost converters. * **Automotive Electronics:** Infotainment and ADAS systems (due to the high stability). * **Consumer Electronics:** High-end laptops and workstations. ---