SRR1240-681K

Fixed Inductors Overview

The Bourns SRR1240-681K is a shielded surface-mount power inductor from the SRR1240 series, designed for general-purpose applications. It features a ferrite drum core and wirewound construction with a nominal inductance of 680 µH and a tolerance of ±10%. The component has a maximum DC resistance of 2 Ω, a saturation current of 480 mA, and a DC current rating of 500 mA. It operates within a temperature range of -40 °C to +125 °C and exhibits a self-resonant frequency of 3.8 MHz.

Fixed Inductors Feature Summary

• Shielded drum core design minimizes electromagnetic interference.
• Ferrite core material supports high-frequency operation.
• Surface mount package facilitates automated assembly.

Fixed Inductors Applications

• General-purpose power supply filtering
• DC-DC converter circuits
• Signal processing stages

Fixed Inductors Procurement Notes

Verify that the specific order matches the SRR1240-681K designation to ensure correct inductance and tolerance values. Confirm compliance with RoHS standards and lead-free requirements as specified by the manufacturer. Check operating temperature ratings against application thermal profiles to ensure reliability under load conditions.

Fixed Inductors Selection Notes

Select this component when a 680 µH inductance value is required with a ±10% tolerance. Ensure the circuit current does not exceed the 480 mA saturation limit or 500 mA DC rating. Verify that the surface mount footprint dimensions align with the PCB layout constraints.

Fixed Inductors Part Context

This part belongs to the SRR1240 series of shielded SMD power inductors manufactured by Bourns. The series offers various inductance values optimized for power electronics. The SRR1240-681K specifically provides a higher inductance option compared to lower-value variants in the same physical package size.

Fixed Inductors Replacement Considerations

Direct substitutes include Pulse Electronics P1168.684NLT and PA4303.684NLT. These alternatives offer similar inductance values but may differ in current ratings and DC resistance specifications. Verify mechanical compatibility before substitution.