The VLP4612T-3R3MR85-1 is a wire-wound power inductor manufactured by TDK Corporation. It is optimized for use in DC-DC converters within compact electronic devices and power management systems where efficiency and size are critical.

Applications

• DC-DC converters for mobile devices (smartphones, tablets)
• Power supplies for SSDs and other storage devices
• Voltage regulators in wearable technology
• Point-of-Load (POL) converters
• Power management in IoT devices

Features

• Compact Size: Dimensions of 4.6 x 4.3 x 1.2 mm.
• Inductance: 3.3 µH.
• Shielded Construction: Minimizes electromagnetic interference (EMI) with other components.
• Low DC Resistance (DCR): Reduces power loss and improves energy efficiency.
• Operating Temperature Range: Typically -40°C to +85°C.
• RoHS Compliant: Adheres to environmental regulations.

Benefits

• High Efficiency: Low DCR minimizes resistive losses, leading to cooler operation and improved energy efficiency in power conversion circuits.
• Reduced EMI: Shielded design helps prevent noise from the inductor affecting surrounding circuitry.
• Space Saving: Small form factor enables denser board layouts and miniaturization of electronic devices.
• Reliable Performance: Designed for stable operation over a broad temperature range.
• Simplified Assembly: Surface mount technology (SMT) compatible for automated manufacturing processes.

Additional Details

The VLP4612T-3R3MR85-1 inductor features a magnetically shielded construction, accomplished through a molded composite material. This shielding is crucial in minimizing electromagnetic interference (EMI) in densely packed electronic environments. The "R85" in the part number likely refers to the tolerance or specific electrical characteristics within a particular tolerance band. The inductor is designed for high-frequency operation in switching power supplies. Proper thermal management is still required to ensure performance within the specified temperature range.

Specific Electrical Characteristics:

• Inductance: 3.3 µH (at a specified frequency, typically 1 MHz)
• DC Resistance (DCR): Typically around 0.04 ohms (check datasheet for precise value)
• Saturation Current (Isat): Likely around 2.0 Amps (consult datasheet)
• Rated Current (Irms): Likely around 1.9 Amps (consult datasheet)