The VLCF4028T-2R7N1R8-2 is a wire-wound inductor manufactured by TDK Corporation. This inductor is designed for power supply circuits in compact electronic devices, requiring a balance of small size and robust performance. It is part of the VLCF series, known for its shielded construction and good electrical characteristics. The '2' at the end of the part number might indicate a specific revision or sub-type with slightly modified characteristics.

Applications:

• DC-DC converters in portable devices
• Power supplies for smartphones, tablets, and wearables
• Point-of-Load (POL) converters
• Buck and boost converters

Features:

• Compact size: 4.0 x 4.0 x 2.8 mm
• Inductance: 2.7 μH
• High rated current capability
• Shielded construction for reduced EMI
• Low DC resistance (DCR)

Benefits:

• Saves space in compact electronic devices.
• Offers efficient power conversion due to low DCR.
• Reduces electromagnetic interference, ensuring stable operation of surrounding circuits.
• Provides stable inductance over a wide range of operating conditions.
• Contributes to the overall reliability of the application.
• Enhanced efficiency and reduced heat generation in power circuits.

Technical Specifications:

• Inductance: 2.7 μH ±30%
• DC Resistance (DCR): 0.018 Ω (typical)
• Rated Current: 1.8 A
• Saturation Current: 3.4 A
• Operating Temperature Range: -40°C to +125°C (including self-temperature rise)
• Self-Resonant Frequency (SRF): 60 MHz (typical)

The VLCF4028T-2R7N1R8-2 inductor's shielded structure effectively contains the magnetic field, which reduces interference with other nearby components. Its minimal DC resistance lowers power losses, thus improving power supply efficiency. The high rated current ensures stable functionality even under high load scenarios. This inductor is RoHS compliant, signifying that it adheres to regulations restricting the use of hazardous substances.

To maximize performance, following the manufacturer's suggested circuit layout and design principles is critical. The TDK datasheet for the VLCF4028T-2R7N1R8-2 contains comprehensive details about the component’s features and usage guidelines. Reviewing this data is important for guaranteeing proper setup and extending the lifespan of the inductor.