The **ATIN0740-R50M** is a high-current, surface-mount (SMD) power inductor commonly used in DC-DC converter applications. It belongs to a class of molded power inductors designed for high density and high efficiency. --- ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the ATIN0740-R50M: | Parameter | Value / Description | | :--- | :--- | | **Inductance** | 0.50 µH | | **Tolerance** | ±20% (indicated by 'M') | | **DC Resistance (DCR)** | Typ: ~1.5 mΩ / Max: ~1.8 mΩ | | **Saturation Current (Isat)** | ~25A - 30A (Typical) | | **Heat Rating Current (Irms)** | ~20A - 24A (Typical) | | **Case Size** | 0740 (Approx. 7.0 x 6.6 x 4.0 mm) | | **Core Material** | Metal Alloy / Carbonyl Powder | --- ### 2. Key Features * **Molded Construction:** The coil is encapsulated in a metal powder composite. This provides "soft saturation" characteristics, meaning the inductance drops gradually rather than abruptly when current increases. * **High Current Handling:** Due to the low DCR (Direct Current Resistance), it can handle high Amperage with minimal power loss through heat. * **Magnetic Shielding:** The molded design naturally shields the component, reducing Electromagnetic Interference (EMI) with surrounding components on the PCB. * **Frequency Range:** Optimized for high-switching frequencies (up to several MHz), making it ideal for modern VRM (Voltage Regulator Module) designs. --- ### 3. Applications The ATIN0740-R50M is typically found in environments requiring stable power delivery in a small footprint: * **Computing:** CPU/GPU power supplies (Vcore rails) in laptops and desktops. * **Telecom:** High-current DC-DC point-of-load (POL) converters. * **Automotive:** Infotainment systems and Advanced Driver Assistance Systems (ADAS) where high reliability is required. * **Power Modules:** Compact battery-powered devices requiring efficient voltage step-down (Buck converters). --- ### 4. Part Number Breakdown (Typical) * **ATIN:** Series identifier (Manufacturer specific, usually referring to Alloy Power Inductors). * **0740:** Physical Dimensions (approx. 7mm length/width, 4.0mm height). * **R50:** Inductance value (R represents the decimal point; R50 = 0.50 µH). * **M:** Tolerance code (M = ±20%).