### TMPC0302H-R82MG: Component Overview The **TMPC0302H-R82MG** is a high-current, shielded surface-mount (SMD) power inductor. It belongs to a category of molded power chokes designed for high-density power applications where space is limited and efficiency is critical. --- ### Technical Specifications | Parameter | Specification | |:---|:---| | **Inductance** | 0.82 µH | | **Tolerance** | ±20% (M) | | **Case Size** | 0302 (Approx. 3.0 x 3.0 x 2.0 mm) | | **DC Resistance (DCR)** | ~25 - 32 mΩ (Max) | | **Saturation Current (Isat)** | ~5.5 - 7.0 A | | **Heat Rating Current (Irms)** | ~4.0 - 5.0 A | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded (Molded) | --- ### Key Features and Construction 1. **Molded Structure:** The inductor is made by pressing metal powder around a copper coil. This creates a solid block that provides excellent magnetic shielding and minimizes "buzz" noise (acoustic noise). 2. **High Saturation:** Due to the metal alloy powder core, it exhibits "soft saturation" characteristics, meaning it maintains its inductance better at higher currents compared to traditional ferrite cores. 3. **Compact Footprint:** The "0302" designation indicates a small form factor (roughly 3mm x 3mm), making it ideal for mobile devices and portable electronics. 4. **Low DCR:** It is designed with low DC resistance to minimize power loss and heat generation during operation. --- ### Common Applications This component is typically found in the following circuits: * **DC-DC Converters:** Used as the energy storage element in buck, boost, or buck-boost regulators. * **Mobile Devices:** Power management in smartphones, tablets, and wearables. * **Computing:** VRM (Voltage Regulator Modules) for CPUs and GPUs in compact laptops. * **Consumer Electronics:** Power supplies for cameras, SSDs, and handheld gaming consoles. --- ### Part Number Breakdown The part number can generally be decoded as follows: * **TMPC:** Series name (typically Tai-Tech or similar manufacturer series for Molded Power Chokes). * **0302:** Physical dimensions (3.0mm x 3.0mm). * **H:** Height/Performance indicator (approx 2.0mm high). * **R82:** Inductance value (R82 = 0.82 microhenries). * **M:** Tolerance (M = ±20%). * **G:** RoHs compliant / Green material designation.