The SPM7040T-R42M is a power inductor manufactured by TDK Corporation, part of the SPM series. These inductors are magnetically shielded, wound components designed for power circuit applications. They are characterized by their relatively small size and efficient performance, making them suitable for use in compact electronic devices.

Applications

• DC-DC converters
• Power supplies for portable devices
• Smartphones
• Tablets
• Notebook computers
• Power management circuits in various electronic devices

Features

• Magnetically Shielded: Minimizes electromagnetic interference (EMI)
• Wound Inductor: Provides high inductance and current handling capability
• Compact Size: Facilitates miniaturization of electronic circuits
• High Efficiency: Reduces power loss and improves overall system performance
• Surface Mount Technology (SMT): Suitable for automated assembly

Benefits

• Reduced EMI: The magnetic shield contains the electromagnetic field, preventing interference with surrounding components.
• Efficient Power Conversion: High efficiency minimizes heat generation and optimizes battery life in portable applications.
• Space Saving: The compact dimensions allow for denser circuit layouts in space-constrained environments.
• Reliable Performance: TDK's stringent quality control ensures consistent and dependable operation.
• Simplified Assembly: The SMT design allows for automated and efficient manufacturing processes.

Additional Details

The SPM7040T-R42M has an inductance value of 0.42µH (R42 indicates 0.42 microhenries). The 'T' in the part number may denote a specific terminal configuration. The inductor has a low DC resistance, which contributes to its high efficiency. Its operating temperature range is typically -40°C to +125°C. The physical dimensions are approximately 7.0mm x 7.0mm with a height of around 4.0mm. Further details concerning saturation current, rated current, and DC resistance can be found in the official TDK datasheet for this part. It is RoHS compliant, confirming it meets environmental standards by being free of hazardous substances. Its design focuses on enabling efficient power management within limited spaces, with the magnetic shielding being crucial for preventing interference in closely packed circuit boards, ensuring operational reliability.