The VLCF4020T-1R8N1R9 is a wire-wound inductor manufactured by TDK Corporation. This inductor is designed for power supply circuits and other applications where a compact, high-performance inductor is required. It is part of TDK's VLCF series, known for their small size and excellent electrical characteristics. The VLCF4020T-1R8N1R9 is designed to provide stable inductance and low losses in a small form factor.

Applications:

• DC-DC converters
• Power supplies for portable devices
• Smartphones and tablets
• Wearable devices
• Point-of-Load (POL) converters

Features:

• Small size: 4.0 x 4.0 x 2.0 mm
• High inductance: 1.8 μH
• High rated current
• Shielded construction
• Excellent DC bias characteristics
• Low DC resistance (DCR)

Benefits:

• Space-saving design for compact applications
• Efficient power conversion due to low DC resistance
• Stable inductance over a wide temperature range
• Reduced electromagnetic interference (EMI) due to shielded construction
• Reliable performance in demanding environments
• Enhanced efficiency and reduced heat generation in power circuits

Technical Specifications:

• Inductance: 1.8 μH ±30%
• DC Resistance (DCR): 0.019 Ω (typical)
• Rated Current: 1.9 A
• Saturation Current: 3.2 A
• Operating Temperature Range: -40°C to +125°C (including self-temperature rise)
• Self-Resonant Frequency (SRF): 80 MHz (typical)

The VLCF4020T-1R8N1R9 inductor's shielded construction minimizes electromagnetic interference, making it suitable for use in sensitive electronic equipment. Its small size and high performance make it an excellent choice for use in portable devices and other space-constrained applications. The high rated current and saturation current ensure stable operation even under high load conditions. The low DCR improves efficiency and reduces heat. This component is RoHS compliant, meaning it adheres to regulations restricting the use of hazardous substances.

Proper circuit design and component selection are crucial to ensure the inductor operates within its specified limits and delivers optimal performance. It's important to consult the manufacturer's datasheet for the most up-to-date specifications and application guidelines. Careful attention to layout and thermal management will help maximize the component's lifespan and ensure reliable operation.