The **1229AS-H-R68N** is a specific part number for a fixed surface-mount (SMD) power inductor. This component is part of the **DEM2815C** series, originally manufactured by **Murata Manufacturing** (formerly Toko). --- ### 1. Technical Specifications The part number encodes specific electrical and physical characteristics: | Parameter | Value | | :--- | :--- | | **Inductance** | 0.68 µH | | **Tolerance** | ±30% | | **DC Resistance (DCR)** | 32 mΩ (Max) | | **Rated Current (Isat)** | 3.3 A (Saturation Current) | | **Rated Current (Itemp)** | 2.9 A (Temperature Rise Current) | | **Case Size (Metric)** | 3.0 x 2.8 x 1.5 mm | | **Shielding** | Magnetically Shielded | --- ### 2. Physical Characteristics * **Form Factor:** It is an SMD (Surface Mount Device) component, designed for automated pick-and-place assembly. * **Shielding:** The "Shielded" construction prevents electromagnetic interference (EMI) from affecting nearby sensitive components, making it ideal for high-density boards. * **Low Profile:** With a maximum height of 1.5mm, it is suitable for slim electronics like smartphones or tablets. --- ### 3. Common Applications This inductor is typically used in **DC-DC Converter** circuits to store energy and filter noise. Common use cases include: * **Mobile Devices:** Power management for smartphones and wearables. * **Computing:** Local power supply for CPUs or GPUs in laptops. * **Consumer Electronics:** Digital cameras, portable gaming consoles, and IoT devices. --- ### 4. Part Number Breakdown While manufacturer codes vary slightly, the typical breakdown for this series is: 1. **1229AS:** Series identifier (Physical dimensions and core type). 2. **H:** Specific internal design or packaging code. 3. **R68:** Inductance value (R represents the decimal point: 0.68 µH). 4. **N:** Tolerance code (N usually denotes ±30%).