The **DRA127-151-R** is a high-power, shielded drum core inductor manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). It is part of the DRA series, specifically designed for automotive and high-reliability industrial applications. --- ### ## Technical Specifications Below are the primary electrical and physical characteristics of the component: | Parameter | Value / Specification | | :--- | :--- | | **Inductance** | 150 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.359 Ω (Typical) | | **RMS Current (Irms)** | 1.63 A | | **Saturation Current (Isat)** | 1.76 A | | **Shielding** | Magnetically Shielded | | **Operating Temperature** | -40°C to +165°C | | **Package / Case** | 12.5mm x 12.5mm x 8.0mm | --- ### ### Key Features 1. **AEC-Q200 Qualified:** This part is automotive grade, meaning it has undergone rigorous stress testing for mechanical shock, vibration, and thermal cycling. 2. **High Temperature Range:** Rated up to **165°C**, making it suitable for under-the-hood automotive environments or dense power supplies with high heat dissipation. 3. **Magnetic Shielding:** The design minimizes Electromagnetic Interference (EMI), protecting sensitive nearby components from magnetic flux leakage. 4. **High Power Density:** Despite its relatively small footprint (12.5mm square), it handles high saturation currents effectively. --- ### ### Common Applications * **Automotive Electronics:** Engine control units (ECUs), LED lighting drivers, and infotainment power rails. * **DC-DC Converters:** Used as a storage inductor in buck, boost, or SEPIC topologies. * **Industrial Controls:** Power supplies for factory automation where reliability and heat resistance are critical. * **Filtering:** Used in input/output filter circuits to reduce ripple and noise. --- ### ### Part Number Breakdown `DRA 127 - 151 - R` * **DRA:** Product Series (Dual Winding/Drum Core, Automotive) * **127:** Size Dimensions (approx. 12.5mm x 7mm height) * **151:** Inductance Code (15 followed by 1 zero = **150 µH**) * **R:** RoHS Compliant