PE-1206PFB121ST

Overview

The PE-1206PFB121ST is a surface-mount ferrite bead from Pulse Electronics' 1206PFB series, designed for high-current applications. It features a 1206 (3216 metric) package with dimensions of 3.2 mm length, 1.6 mm width, and 0.85 mm height. The component offers an impedance of 120 Ohms at 100 MHz with a tolerance of ±25%. It supports a maximum DC current rating of 3A and has a maximum DC resistance of 30 mOhm. The operating temperature range extends from -40°C to +105°C.

Feature Summary

• High current handling capability rated at 3A for power line filtering
• Low DC resistance of 30 mOhm minimizes voltage drop in signal paths
• Compact 1206 surface mount footprint suitable for space-constrained designs

Applications

• Power supply input/output filtering
• Signal line noise suppression
• EMI/RFI attenuation in digital circuits

Procurement Notes

Verify the manufacturer part number PE-1206PFB121ST against official Pulse Electronics documentation to ensure authenticity. Confirm that the specified impedance, current rating, and package dimensions match your design requirements before procurement. Check for any recent product change notifications or obsolescence notices directly from the manufacturer to avoid integration issues.

Selection Notes

Select this component when a low-impedance path is required alongside effective high-frequency noise attenuation. The 3A current rating makes it suitable for powering sensitive components where voltage drop must be minimized. Ensure the 1206 package fits within the available PCB real estate and that the thermal performance aligns with the expected operating environment up to 105°C.

Part Context

This ferrite bead belongs to Pulse Electronics' 1206PFB series, which focuses on multi-layer chip beads for general-purpose EMI suppression. The series is characterized by its ability to handle significant DC currents while maintaining stable impedance characteristics across a wide frequency range, making it a standard choice for board-level noise control.

Replacement Considerations

Consult official distributor cross-reference tools or Pulse Electronics technical support for verified substitute part numbers. Do not assume functional equivalence based solely on package size; verify impedance curves and current ratings against the original specification.