CTPA5031F-R21M

Fixed Inductors Overview

The CTPA5031F-R21M is a shielded surface-mount power inductor from Central Technologies, designed for high-current applications requiring low inductance values. It features an inductance of 0.21 µH with a ±20% tolerance. The component has a maximum DC resistance (DCR) of 0.35 mΩ. Key electrical ratings include a saturation current (Isat) of 71 A and a rated RMS current (Irms) of 45 A. The physical dimensions are 13.46 mm x 12.95 mm x 8 mm.

Fixed Inductors Feature Summary

• Shielded construction to minimize electromagnetic interference
• High saturation current capability for demanding power circuits
• Low DC resistance for improved efficiency
• Surface-mount design for automated assembly

Fixed Inductors Applications

• High-current power supply modules
• Point-of-load conversion stages
• Industrial power distribution systems

Fixed Inductors Procurement Notes

Verify the specific part number suffix against official Central Technologies documentation to confirm exact electrical tolerances and packaging specifications. Ensure that the required current ratings align with system thermal constraints. Cross-reference the datasheet for precise dimensional drawings to validate board layout compatibility before procurement.

Fixed Inductors Selection Notes

Select this component when low inductance and high current handling are primary requirements. The shielded design is suitable for environments sensitive to magnetic field leakage. Evaluate the trade-off between the low DCR and the physical footprint to ensure it meets space constraints while providing adequate thermal performance under continuous load conditions.

Fixed Inductors Part Context

This part belongs to the PA503 series of SMD power inductors from Central Technologies. The series offers various inductance values within a similar form factor, allowing designers to scale current capabilities while maintaining consistent mechanical integration across different power management designs within the same product line.

Fixed Inductors Replacement Considerations

Consult official substitution lists for direct equivalents. Generic replacements may differ in saturation current or shielding effectiveness. Verify that any substitute maintains the same package dimensions and electrical characteristics to ensure circuit stability.