The VLN4012AT-4R7M-2 is a shielded power inductor manufactured by TDK Corporation. This inductor is specifically designed for use in DC-DC converters and power supply circuits where efficient energy storage and filtering are required. The shielded construction minimizes electromagnetic interference (EMI), making it suitable for use in sensitive electronic applications.

Applications:

• DC-DC converters
• Power supplies
• Point-of-Load (POL) converters
• Noise filtering in electronic circuits
• Portable device power management

Features:

• Shielded construction for low EMI
• Compact size: 4.0mm x 4.0mm x 1.2mm
• High current handling capability
• Excellent DC-bias characteristics
• RoHS compliant

Benefits:

• Reduced electromagnetic interference, ensuring stable system performance
• Space-saving design for high-density circuit boards
• Efficient energy storage and filtering
• Stable inductance under high current conditions
• Compliant with environmental regulations

Additional Details:

The VLN4012AT-4R7M-2 inductor has an inductance value of 4.7µH (4.7 microhenries) with a tolerance of ±20%. It features a rated current of 2A and a low DC resistance (DCR), typically around 0.15 ohms. The shielded construction effectively minimizes electromagnetic interference (EMI), making it suitable for use in sensitive electronic applications where noise reduction is critical. The operating temperature range is typically -40°C to +125°C. The self-resonant frequency (SRF) is typically around 30 MHz. The inductor is often used in mobile devices, SSDs, and other compact electronic devices where space is limited.

The inductor’s excellent DC-bias characteristics ensure stable inductance under high current conditions, which is essential for efficient operation in DC-DC converters. It is constructed using a ferrite core, which offers high permeability and low core loss. The terminals are solder-plated for easy soldering onto PCBs. The compact size of the VLN4012AT-4R7M-2 makes it suitable for use in densely populated circuit boards where space is at a premium.

This inductor is commonly used in step-up and step-down DC-DC converters for voltage regulation. It efficiently stores energy in its magnetic field and releases it to maintain a stable output voltage. In power supplies, it helps to filter out unwanted noise and ripple, ensuring a clean and stable power supply for the connected devices. The VLN4012AT-4R7M-2 is a reliable and efficient component for various power management applications.