The **DRA73-150-R** is a high-performance, shielded power inductor specifically designed for automotive and industrial electronics. It is manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). ### 1. Technical Specifications The following table highlights the core electrical and physical characteristics: | Parameter | Value | | :--- | :--- | | **Inductance** | 15.0 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 2.15 Amperes | | **Saturation Current (Isat)** | 2.41 Amperes | | **DC Resistance (DCR)** | 67.8 mΩ (Max) | | **Operating Temperature** | -40°C to +165°C | | **Dimensions** | 7.6mm x 7.6mm x 3.55mm | | **Shielding** | Magnetically Shielded | --- ### 2. Key Features * **Automotive Grade:** It is **AEC-Q200 Grade 1** qualified, meaning it can withstand the harsh environments found in engine compartments or automotive safety systems. * **High Temperature Stability:** Unlike standard inductors, the "DRA" series is rated up to **165°C**, making it ideal for high-heat applications. * **Magnetic Shielding:** The part is shielded to minimize Electromagnetic Interference (EMI), which is crucial in noise-sensitive circuits like radios or sensors. * **Construction:** It uses a ferrite core material with a rugged construction to handle mechanical vibrations. --- ### 3. Common Applications The DRA73-150-R is typically found in: 1. **DC-DC Converters:** Used for energy storage and filtering in buck or boost regulators. 2. **Automotive Modules:** Powertrain control units, ADAS (Advanced Driver Assistance Systems), and infotainment. 3. **Industrial Controls:** Power supplies for factory automation where high reliability is required. 4. **LED Lighting:** Used in driver circuits to regulate current. --- ### 4. Part Number Breakdown To better understand the component series: * **DRA:** Automotive series name. * **73:** Size code (approx. 7mm width, 3mm height). * **150:** Inductance value (15 followed by 0 zeros = **15 µH**). * **R:** RoHS compliant.