PMH1210-300

Overview

The PMH1210-300 is a single-line ferrite bead manufactured by Bourns Inc. in the 1210 surface-mount package, measuring 3.20mm x 2.50mm. It provides an impedance of 30 Ohms at 100 MHz with a maximum DC resistance of 20mOhm and a current rating of 3A. The component operates within a temperature range of -55°C to 125°C.

Feature Summary

• Single-line configuration for noise suppression
• Surface-mount design for automated assembly

Applications

• High-speed data line filtering
• Power supply noise attenuation
• EMI suppression in compact electronics

Procurement Notes

Verify RoHS compliance status as sources indicate non-compliance. Confirm exact impedance tolerance and DCR limits against the official datasheet. Ensure the 1210 footprint matches the target PCB layout. Check for lead-free availability if required by specific manufacturing standards.

Selection Notes

Select based on the 30 Ohm impedance requirement at 100 MHz. Ensure the 3A current rating exceeds the circuit's maximum operating current. Verify that the 20mOhm DCR meets voltage drop constraints. Confirm the 1210 package fits the available board space.

Part Context

This ferrite bead belongs to Bourns' PMH series of surface-mount components. The series offers various impedance values and package sizes for EMI suppression applications. The 1210 size balances performance with board area efficiency.

Replacement Considerations

Consult official substitution guides for equivalent impedance and current ratings. Verify package compatibility before replacing.