The CAS11D21 is a shielded power inductor manufactured by Sumida America Components Inc. Power inductors are essential components in power supply circuits, DC-DC converters, and other applications where energy storage and filtering are required. Shielded inductors minimize electromagnetic interference (EMI) and ensure efficient energy transfer.

Applications:

• DC-DC converters: Used in step-up (boost), step-down (buck), and other DC-DC converter topologies for voltage regulation.
• Power supplies: Employed in linear and switching power supplies for filtering and energy storage.
• LED lighting: Integrated into LED driver circuits for current regulation and filtering.
• Automotive electronics: Used in various automotive systems, including engine control units (ECUs) and power management systems.
• Portable devices: Found in smartphones, tablets, and other portable devices for power management and filtering.

Features:

• Shielded construction: Reduces electromagnetic interference (EMI) and improves circuit performance.
• Low DC resistance (DCR): Minimizes power losses and improves efficiency.
• High saturation current: Allows for high current handling capability without significant inductance drop.
• Compact size: Designed with a small form factor for integration into space-constrained devices.
• Surface mount technology (SMT): Suitable for automated assembly processes, reducing manufacturing costs.

Benefits:

• Reduced EMI: Minimizes electromagnetic interference, improving the reliability and performance of electronic devices.
• Improved efficiency: Low DCR reduces power losses, increasing overall efficiency.
• High current handling: Capable of handling high currents without saturation, ensuring stable operation.
• Space-saving design: Compact size allows for integration into small and portable devices.
• Cost-effective: Provides a reliable and efficient power inductor solution at a competitive price.

Specifications:

Typical specifications for power inductors include:

• Inductance Value: The inductance value is specified in microhenries (µH). While the exact value for CAS11D21 isn't publicly available, it would be specific to its intended application.
• DC Resistance (DCR): DCR is measured in ohms (Ω) and should be low to minimize power loss.
• Saturation Current: Saturation current is the DC current at which the inductance drops by a specified percentage (e.g., 10% or 20%).
• Rated Current: The rated current is the maximum continuous current that the inductor can handle without exceeding a specified temperature rise.
• Operating Temperature Range: This specifies the range of ambient temperatures in which the inductor can operate reliably. A typical range is -40°C to +125°C.

Consult the manufacturer's datasheet for exact specifications.