SRF1280A-151M

Overview

The Bourns SRF1280A-151M is a shielded dual-coil inductor array designed for surface-mount applications. It features two independent coils with an inductance of 150 µH when connected in parallel and 600 µH in series, with a tolerance of ±20%. The component has a maximum DC resistance of 261 mΩ in parallel and 1.013 Ω in series. Current ratings are 1.59 A (parallel) and 796 mA (series), while saturation currents reach 3.01 A (parallel) and 1.51 A (series). It operates within a temperature range of -40°C to 125°C and meets AEC-Q200 standards.

Feature Summary

• Magnetically shielded design minimizes electromagnetic interference and radiation.
• Dual-coil configuration allows flexible series or parallel circuit integration.
• Automotive-grade reliability certified under AEC-Q200 standards.
• Surface-mount package supports automated high-volume manufacturing.

Applications

• Automotive power supply filtering circuits
• DC-DC converter input/output stages
• Signal processing noise suppression
• Industrial control system power management

Procurement Notes

Verify the specific suffix 'A' against your bill of materials, as it denotes the automotive-grade variant. Confirm RoHS3 compliance requirements for your region. Check lead times due to potential automotive supply chain constraints. Ensure the surface-mount footprint matches your PCB layout dimensions precisely before ordering.

Selection Notes

Choose this part when magnetic shielding is critical to prevent crosstalk in dense layouts. Select the parallel configuration for higher current handling needs up to 1.59 A. Opt for the series connection if higher inductance values around 600 µH are required. Verify that the physical dimensions fit within the designated board area constraints.

Part Context

This component belongs to the SRF1280A series of dual-winding shielded power inductors from Bourns. The series is engineered for robust performance in demanding environments. It complements other components in power conversion systems by providing stable inductance with low core losses. The series offers various inductance values to suit different voltage and current specifications.

Replacement Considerations

Direct substitutes include other SRF1280A series variants with similar inductance and current ratings. Cross-reference pinouts and thermal characteristics when considering alternative manufacturers. Ensure any replacement also meets AEC-Q200 if automotive qualification is mandatory for the application.

FAQ

What is the difference between the SRF1280 and SRF1280A series?

The SRF1280A series is specifically qualified to AEC-Q200 standards, making it suitable for automotive applications, whereas the standard SRF1280 may not hold this specific automotive certification.

How does the shielding affect performance?

The magnetic shielding reduces electromagnetic radiation and prevents interference with nearby components, which is essential for maintaining signal integrity in compact electronic designs.