The VLF4012AT-4R71R1 is a wire-wound inductor from TDK Corporation's VLF series. These inductors are designed for power circuits in compact electronic devices, prioritizing size and efficient power handling. The '4R7' indicates an inductance value, likely 4.7µH. The '1R1' likely refers to the rated current or a specific tolerance/version.

Applications:

• DC-DC converters in portable electronics: Ideal for smartphones, tablets, and wearables due to their small size and power efficiency.
• Power management circuits: Used for voltage regulation and ripple filtering.
• High-frequency power inductors: Suited for applications requiring high efficiency and minimal footprint.
• Noise filtering: Reduces electromagnetic interference (EMI) in sensitive circuits.

Features:

• Miniature Size: Optimized dimensions for space-constrained applications.
• Magnetically Shielded: Reduces electromagnetic interference.
• High Current Capability: Designed to handle significant current levels for its size.
• Excellent Inductance Stability: Maintains consistent inductance across varying temperatures and frequencies.
• RoHS Compliant: Lead-free construction.

Benefits:

• Reduced Board Space: Allows for smaller and more compact device designs.
• Minimized EMI: Improves the reliability and performance of nearby circuits.
• Efficient Power Conversion: Contributes to improved energy efficiency in DC-DC converters.
• Stable Performance: Provides consistent and reliable operation in diverse conditions.
• Environmentally Friendly: Complies with environmental regulations regarding lead content.

Specifications:

The VLF4012AT-4R71R1 has an inductance of 4.7µH. Its dimensions are approximately 4.0mm x 4.0mm x 1.2mm. It is designed for reflow soldering. It has a shielded construction. The rated current is specific to the part number and detailed in the TDK datasheet. The operating temperature range is also found within the datasheet. The DC resistance is another important parameter specified in the datasheet.