SDR7045-331K

$0.58

Description：FIXED IND 330UH 420MA 1.24OHM SM
Series：SDR7045
Mfr：Bourns Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:1fd4f75c8a3b Category: Fixed Inductors Brand: Bourns Inc.

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Product introduction

SDR7045-331K is listed in the Fixed Inductors range at ChipApex. The manufacturer field lists Bourns Inc.. Its product description is FIXED IND 330UH 420MA 1.24OHM SM. Review the specifications below when checking this part for your BOM.

Fixed Inductors specifications for SDR7045-331K

Description：FIXED IND 330UH 420MA 1.24OHM SM
Series：SDR7045
Mfr：Bourns Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Drum Core, Wirewound
Material - Core：Ferrite
Inductance：330 µH
Tolerance：±10%
Current Rating (Amps)：420 mA
Current - Saturation (Isat)：400mA
Shielding：Unshielded
DC Resistance (DCR)：1.24Ohm Max
Q @ Freq：20 @ 796kHz
Frequency - Self Resonant：6MHz
Ratings：-
Operating Temperature：-40°C ~ 125°C
Inductance Frequency - Test：100 kHz
Mounting Type：Surface Mount
Package / Case：Nonstandard
Supplier Device Package：-
Size / Dimension：0.276" L x 0.276" W (7.00mm x 7.00mm)
Height - Seated (Max)：0.189" (4.80mm)
Features：-

Fixed Inductors datasheet and documents for SDR7045-331K

SDR7045-331K

Fixed Inductors Overview

The Bourns SDR7045-331K is a surface-mount power inductor with a nominal inductance of 330 µH and a tolerance of ±10%. It features an unshielded drum core construction using wirewound technology on a ferrite substrate. The component measures 7.0 mm by 7.0 mm with a height of 4.5 mm. Key electrical specifications include a maximum DC resistance of 1.24 Ohms, a saturation current of 400 mA, and a rated current of 420 mA. It operates within a temperature range of -40°C to +125°C.

Fixed Inductors Feature Summary

Unshielded drum core design for specific magnetic field requirements
Wirewound construction utilizing ferrite core material
High thermal stability supporting operation up to 125°C

Fixed Inductors Applications

DC-DC converter circuits
Power supply filtering applications
General-purpose power electronics

Fixed Inductors Procurement Notes

Verify the exact part number against official Bourns documentation to confirm the unshielded designation and specific current ratings. Ensure that the physical dimensions and lead finish match the target PCB layout requirements. Cross-reference datasheet revisions to confirm compliance with current environmental standards before finalizing procurement orders.

Fixed Inductors Selection Notes

Select this component when an unshielded inductor is required to minimize magnetic interference with nearby sensitive components or to accommodate specific flux path designs. Consider the 1.24 Ohm DC resistance for efficiency calculations in low-current applications. Evaluate the 400 mA saturation limit against peak load currents to prevent performance degradation during transient states.

Fixed Inductors Part Context

This component belongs to the SDR7045 series of surface-mount power inductors manufactured by Bourns. The series utilizes a standardized 7.0 x 7.0 mm footprint, allowing for consistent board space planning across different inductance values within the same family. The unshielded variant distinguishes itself from shielded counterparts by its open magnetic structure.