The VLS3012ET-4R7M-2 is a wire-wound inductor manufactured by TDK Corporation. It is designed for power supply circuits, specifically in applications where a small size and low profile are critical. This inductor offers a compact solution for DC-DC converters and other power management circuits.

Applications

• DC-DC converters
• Power supply circuits for portable devices
• Smartphones and tablets
• Digital cameras
• LED lighting

Features

• Small size: The compact dimensions of 3.0 x 3.0 x 1.2 mm make it suitable for space-constrained applications.
• Magnetically shielded construction: Reduces electromagnetic interference (EMI).
• Low DC resistance: Improves efficiency by minimizing power loss.
• High current handling capability: Allows for operation in high-current circuits.
• Operating temperature range: Typically -40°C to +85°C (including self-temperature rise).

Benefits

• Space saving: Its small size allows for high-density circuit designs.
• Reduced EMI: The shielded construction minimizes interference with other components.
• Improved efficiency: Low DC resistance reduces power loss, leading to better overall efficiency.
• Reliable performance: Designed for stable operation in various environmental conditions.
• Stable Inductance: Maintains stable inductance over a wide temperature range.

Additional Details

The VLS3012ET series utilizes a ferrite core material. The inductance value is 4.7µH with a tolerance of ±20%. The rated current is approximately 0.6A, and the DC resistance is around 0.3 ohms (check datasheet for exact values as they might vary slightly between versions). This inductor is typically surface-mounted and is RoHS compliant.

Proper PCB layout is crucial for optimal performance. Keep traces short and wide to minimize parasitic inductance and resistance. Place a ground plane underneath the inductor to further reduce EMI.