SRR1210-121M

Fixed Inductors Overview

The Bourns SRR1210-121M is a shielded wirewound surface mount power inductor from the SRR1210 series. It features a ferrite core and offers an inductance of 120 µH with a tolerance of ±20%. The component supports a maximum DC current (Irms) of 2.3 A and a saturation current (Isat) of 1.9 A. Its maximum DC resistance is 170 mΩ, with a Q factor of 13 at 796 kHz and a self-resonant frequency of 2.6 MHz. Designed for operation between -40°C and 125°C, it measures 12.00 mm x 12.00 mm x 10.00 mm.

Fixed Inductors Feature Summary

• Shielded drum core construction minimizes magnetic flux leakage for reliable circuit performance.
• Wirewound design on a ferrite core provides stable inductance characteristics under varying conditions.
• Surface mount package facilitates automated assembly and compact PCB integration.

Fixed Inductors Applications

• Power supply output filtering
• DC-DC converter input and output stages
• General-purpose power electronics circuits

Fixed Inductors Procurement Notes

Verify the specific ordering suffix to confirm packaging format, such as tape and reel or cut tape, as these affect handling procedures. Confirm RoHS compliance status and automotive qualification requirements if applicable to the target application environment before finalizing procurement orders.

Fixed Inductors Selection Notes

Select this component when a 120 µH value is required with a 2.3 A continuous current rating. Ensure the 1.9 A saturation limit meets peak load demands. The 1210 footprint and 10 mm height must fit within the mechanical constraints of the design.

Fixed Inductors Part Context

This part belongs to the Bourns SRR1210 series of shielded SMD power inductors. The series utilizes a drum core design optimized for high-current applications. The SRR1210A variant represents an updated version with improved quality and reliability while maintaining form, fit, and function compatibility.

Fixed Inductors Replacement Considerations

The SRR1210A-121M is a confirmed substitute offering improved quality and reliability. It maintains identical electrical specifications and physical dimensions, ensuring direct replacement capability without design modifications.