The SLF12575T-3R9M6R7APF is a shielded power inductor produced by TDK Corporation. It is designed for power supply circuits in various electronic devices. This inductor offers a good balance between size, inductance, and current handling capabilities.

Applications

• DC-DC Converters
• Power supplies for various electronics
• Voltage regulators
• Step-up/Step-down converters

Features

• Shielded construction to minimize EMI
• Inductance: 3.9µH ± 20%
• Rated Current: 6.7A
• Operating Temperature: -40°C to +125°C (including self-temperature rise)
• Size: 12.5 x 12.5 x 7.5 mm

Benefits

• Reduces electromagnetic interference, preventing issues with nearby components.
• High current handling capability enables usage in demanding power circuits.
• Suitable for high-density circuit boards.
• Consistent performance across a wide temperature range.
• Easy to solder in manufacturing environments.

Additional Details

The SLF12575T series from TDK utilizes a metallic magnetic material core, providing good DC bias characteristics, maintaining inductance value at high currents. The 'T' designation might indicate specific terminal properties. Always consult the datasheet to understand the self-resonant frequency (SRF). The 'PF' suffix likely indicates lead-free compliance. These inductors are frequently found in buck converters and boost converters. Selecting this component requires understanding both the inductance required for the switching frequency, and the current that will be flowing through it. Good thermal design practices are recommended to ensure long-term reliability.