The SCDS4D18T-3R3M-S-N is a shielded power inductor manufactured by Chilisin. It's designed for use in various DC-DC converter applications where a compact size and good performance are needed. This inductor uses a composite core to provide high saturation current capabilities and minimal core losses.

Applications

• DC-DC converters
• Step-up/Step-down converters
• Power supplies for consumer electronics
• LED drivers
• Portable power devices

Features

• Shielded construction for reduced EMI.
• Composite core material to achieve high saturation current.
• Small size: 4.5mm x 4.0mm x 1.8mm
• Low DCR to improve efficiency.
• Operating temperature range of -40°C to +125°C.
• RoHS compliant.

Benefits

• Reduced noise and interference in sensitive circuits, thanks to the shielded design.
• Handles large currents without significant inductance drop, ensuring stable operation.
• Saves space on the PCB, allowing for smaller and more compact devices.
• Improved efficiency due to lower DC resistance, reducing heat generation.
• Suitable for demanding applications.
• Environmentally friendly.

Technical Specifications

The SCDS4D18T-3R3M-S-N has an inductance of 3.3 μH with a tolerance of ±20%. Its saturation current is 1.5A and Irms is 1.3A. The typical DCR is 0.15 ohms. This is a surface mount device, suitable for automated assembly with tape and reel packaging.

The dimensions are 4.5mm (L) x 4.0mm (W) x 1.8mm (H). The Self Resonant Frequency (SRF) is typically around 60MHz. It's a halogen-free part.