Power inductors deliver low magnetic radiation

Bourns, Inc. has expanded its family of shielded power inductors with two new AEC-Q200 compliant, automotive-grade inductors. The new Model SRR5228A and SRR5828A Series devices are designed with a ferrite core and ferrite shield for low magnetic radiation.

Bourns said low magnetic field radiation is essential for applications that operate in low noise environments such as in automotive driver assistant devices, infotainment systems and lighting designs. These new inductors are also suited for DC/DC converters and power supplies in consumer, industrial and telecom applications where higher inductor reliability is often a requirement.

The Model SRR5228A and SRR5828A power inductors feature an inductance range up to 1000 μH (1.2 to 1000 μH for the SRR5228A and 2.6 to 1000 μH for the SRR5828A) and heating current up to 5.2 A (up to 5.2 A for the SRR5228A and up to 4.5 A for the SRR5828A). The operating temperature range is -40°C to 150°C. The devices are RoHS compliant and halogen-free.

Earlier this year, Bourns introduced a low-profile form factor extension to its Model SRP3212 Series of high-current shielded power inductors. The new Model SRP3212-1R0MR21 power inductor, in a 3.2 × 2.5 × 1 mm package, features a metal alloy powder core and shielded construction that delivers high saturation currents, high heating currents and low magnetic field radiation. This device was developed for use with Texas Instruments’ Model BQ25638/BQ25638D battery chargers and is part of the reference design.