4221R-4

Overview

The Delevan 4221R-4 is a surface-mount EMI/RFI suppression ferrite bead designed for single-line applications. It features a 2-SMD J-lead package with dimensions of 0.350 inches in length and 0.187 inches in width, reaching a maximum height of 0.146 inches (3.70mm). The component exhibits an impedance of 85 Ohms at 100 MHz and supports a rated current of 5 Amperes. It operates within a temperature range from -55°C to +125°C.

Feature Summary

• Surface-mount construction with plated copper J-leads for reliable PCB integration
• Single-line ferrite bead design for effective EMI and RFI noise suppression
• Robust thermal stability supporting operation across extended industrial temperature ranges

Applications

• High-frequency signal line filtering in electronic circuits
• Power supply noise attenuation in compact surface-mount designs
• EMI suppression for sensitive digital communication interfaces

Procurement Notes

Verify the specific manufacturer datasheet for the 4221R-4 to confirm exact DC resistance values and detailed impedance curves, as these parameters are critical for precise circuit simulation. Ensure that the selected supplier provides official documentation from API Delevan to guarantee component authenticity and performance consistency against the published specifications.

Selection Notes

Select this component when a high-current capability of 5A is required alongside significant impedance at 100 MHz for noise reduction. The J-lead SMD package facilitates automated assembly processes while providing mechanical stability. Consider the physical footprint constraints and thermal management requirements relative to the specified operating temperature limits during the design phase.

Part Context

This component belongs to the 4221R series of ferrite beads manufactured by API Delevan. The series offers various impedance ratings and current capacities tailored for different electromagnetic interference suppression needs. The 4221R-4 specifically addresses applications requiring robust noise filtering in space-constrained surface-mount environments.

Replacement Considerations

Consult official cross-reference guides or distributor databases for verified substitute part numbers from API Delevan or other manufacturers. Ensure any replacement matches the 85 Ohm impedance at 100 MHz, 5A current rating, and compatible SMD J-lead package dimensions.