SRR1260-271K

The SRR1260-271K is a shielded surface-mount power inductor manufactured by Bourns as part of the SRR1260 series. Designed for high-current applications, this fixed inductor provides a nominal inductance of 270µH with a tight tolerance of ±10%. It achieves a maximum DC resistance of 450mΩ and supports an RMS current rating of 1.3A alongside a saturation current of 1.2A. The component utilizes a ferrite drum core with wirewound construction and includes magnetic shielding to minimize electromagnetic interference. Measuring 12.50mm by 12.50mm with a height of 6.50mm, it is optimized for space-constrained printed circuit board layouts. Operating reliably across a temperature range of -40°C to 125°C, this inductor is suitable for input and output filtering in DC/DC converters, portable communication equipment, camcorders, and LCD television power supplies. Its self-resonant frequency is typically 3.6MHz, ensuring stable performance in switching power applications.

Buyer Summary: Order the SRR1260-271K by Bourns for reliable power filtering in compact electronics. Key specifications include 270µH inductance, 1.3A RMS current, and 450mΩ DCR in a surface-mount drum core package. Verify lead times and packaging quantities directly with suppliers prior to procurement.

Engineering Summary: This 270µH shielded power inductor offers a 1.3A RMS and 1.2A saturation current rating with 450mΩ max DCR. The ferrite drum core construction and magnetic shielding reduce EMI, making it ideal for DC/DC converter input/output stages. The 12.50mm square footprint and 6.50mm height fit standard SMD reflow processes, while the -40°C to 125°C operating range ensures robust thermal performance in consumer and industrial power supplies.