The **VLB10050HT-R20M** is a high-performance, high-current power inductor manufactured by **TDK**. It is specifically designed for use in voltage regulator modules (VRMs) and high-efficiency power supplies for servers and networking equipment. --- ### 1. Key Technical Specifications The model number provides specific details about the component's physical and electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.20 µH (200 nH) | | **Tolerance** | ±20% (indicated by 'M') | | **DC Resistance (DCR)** | 0.19 mΩ (Typical) | | **Rated Current (Isat)** | 100 Amperes (Max) | | **Rated Current (Itemp)** | 55 Amperes (Max) | | **Dimensions (LxWxH)** | 10.0 x 5.0 x 4.8 mm | | **Operating Temp** | -40°C to +125°C | --- ### 2. Physical Construction The VLB series utilizes a **wound-ferrite core** design. Its architecture is optimized for: * **Low Profile:** The "10050" designation refers to its 10.0mm x 5.0mm footprint. * **SMD Mounting:** Designed for surface-mount technology with robust terminals to handle extremely high current without overheating. * **High Power Density:** Large wire cross-sections minimize DC resistance (DCR), reducing power loss during operation. --- ### 3. Core Functionalities and Features * **Saturation Characteristics:** The R20M variant has a high saturation current ($I_{sat}$), meaning it can maintain its inductance value even when very high current flows through it. * **Low Loss:** Because the DCR is exceptionally low (0.19 mΩ), it minimizes heat generation, which is critical for 24/7 server environments. * **Magnetic Shielding:** The design helps contain electromagnetic interference (EMI), which is vital in high-frequency switching power supplies. --- ### 4. Common Applications The VLB10050HT-R20M is typically found in the following electronic systems: 1. **Server VRMs:** Used in multi-phase buck converters to provide stable voltage to high-power CPUs and GPUs. 2. **Base Stations:** Power stages for telecommunications infrastructure. 3. **Graphic Cards:** Managing power delivery for high-performance computing (HPC) units. 4. **DC-to-DC Converters:** High-current step-down modules. --- ### 5. Part Number Breakdown ```text VLB 10050 HT - R20 M | | | | | | | | | +-- Tolerance (M = ±20%) | | | +----- Inductance (R20 = 0.20µH) | | +---------- Series Code (High Temperature/Current) | +---------------- Case Size (10.0mm x 5.0mm) +--------------------- Product Type (Inductor for Power Circuits) ```