The **TMPC0312H-R56MG** is a high-performance, surface-mount (SMD) power inductor. It is part of the "molded" inductor family, designed for high-current power supplies where space is limited and efficiency is critical. --- ### 1. Part Number Deciphering To understand the component, we can break down the typical naming convention for this series: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **TMPC** | Series Name | Tai-Tech Molded Power Choke | | **0312** | Dimensions | Approx. 3.0mm x 3.0mm x 1.2mm | | **H** | Performance Grade | High current / High saturation version | | **R56** | Inductance Value | **0.56 µH** (R denotes the decimal point) | | **M** | Tolerance | ±20% | | **G** | Material/Finish | Green/Lead-free/RoHS compliant | --- ### 2. Key Technical Specifications Based on the standard datasheet for the 0312H series, here are the estimated electrical characteristics for the **R56 (0.56µH)** model: | Parameter | Value (Typical) | | :--- | :--- | | **Inductance** | 0.56 µH | | **DC Resistance (DCR)** | ~18 - 25 mΩ | | **Saturation Current (Isat)** | ~7.0 A - 8.5 A (Current at which L drops 30%) | | **Heat Rating Current (Irms)** | ~5.0 A - 6.0 A (Current causing 40°C temp rise) | | **Operating Temperature** | -40°C to +125°C | --- ### 3. Construction and Material Benefits The "Molded" construction sets this part apart from traditional wire-wound inductors: * **Metal Powder Core:** It uses a metal alloy powder pressed around the coil. This allows for **soft saturation**, meaning the inductance doesn't drop off instantly when current spikes. * **Magnetic Shielding:** The molded body acts as a natural shield, drastically reducing Electromagnetic Interference (EMI) and "buzz" noise. * **Ruggedness:** The solid construction is highly resistant to mechanical shock and vibration. --- ### 4. Common Applications Because of its small footprint (3x3mm) and high current handling, it is found in: 1. **DC/DC Converters:** Point-of-load (POL) modules for CPUs and GPUs. 2. **Portable Electronics:** Smartphones, tablets, and wearable tech. 3. **Laptops:** Power rails for SSDs and memory. 4. **Automotive Infotainment:** Compact power supplies for displays and sensors. ---