The **MPIA4015V2-4R7-R** is a high-performance, automotive-grade power inductor manufactured by **Eaton (formerly Coiltronics)**. It belongs to the MPIA4015V2 series, which is characterized by its miniature footprint and rugged construction. --- ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the component: | Parameter | Value | | :--- | :--- | | **Inductance** | 4.7 µH | | **Tolerance** | ±20% | | **DCR (DC Resistance)** | 105 mΩ (Typical) / 126 mΩ (Max) | | **Isat (Saturation Current)** | 3.2 A (Typical) | | **Irms (Rated Current)** | 2.5 A (Typical) | | **Operating Temperature** | -55°C to +125°C | | **Package Size** | 4.0mm x 4.0mm x 1.5mm | --- ### 2. Key Features and Construction The MPIA4015V2-4R7-R is designed for demanding environments, featuring several advanced engineering choices: * **Metal Powder Core:** Uses a molded metal powder material that provides "soft" saturation characteristics. Unlike ferrite cores, it does not have a sharp drop-off in inductance when current limits are reached. * **AEC-Q200 Grade 3:** It is qualified for automotive applications, ensuring high reliability under thermal shock, humidity, and vibration. * **Magnetic Shielding:** The molded construction naturally provides electromagnetic interference (EMI) shielding, making it ideal for high-density PCB layouts. * **Low Profile:** At only 1.5mm in height, it is suitable for thin electronic devices. --- ### 3. Applications This inductor is typically used in DC-DC converters and power management modules. Common applications include: 1. **Automotive Electronics:** Infotainment systems, ADAS sensors, and instrument clusters. 2. **Industrial IoT:** Compact sensors and handheld controllers. 3. **Consumer Electronics:** Tablets, laptops, and portable medical devices where space is at a premium. --- ### 4. Part Number Breakdown Understanding the nomenclature helps in selecting variants: ```text MPIA 40 15 V2 - 4R7 - R | | | | | | | | | | | +-- RoHS Compliant | | | | +--------- Inductance Value (4.7 µH) | | | +---------------- Version 2 (Improved materials/process) | | +-------------------- Height (1.5 mm) | +------------------------ Footprint (4.0 mm x 4.0 mm) +------------------------------ Series Name (Automotive Power Inductor) ```