SRF1280-820M

Overview

The Bourns SRF1280-820M is a dual-winding shielded power inductor array designed for surface-mount applications. It features an inductance of 82 µH with a ±20% tolerance. The component supports two connection configurations: parallel connection yields 82 µH with a maximum DC resistance of 153 mΩ and a rated current of 2.09 A; series connection yields 328 µH with a maximum DC resistance of 578 mΩ and a rated current of 1.04 A. It operates within a temperature range of -40°C to 125°C and has a physical height of 8.00 mm.

Feature Summary

• Dual-winding architecture enabling flexible series or parallel circuit integration
• Shielded magnetic structure minimizes electromagnetic interference
• Surface-mount design facilitates automated assembly processes

Applications

• SEPIC topology converters
• Communication equipment power supplies
• Computer system power distribution

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm exact electrical tolerances and packaging specifications. Ensure compatibility with existing PCB footprints regarding the 12.50 mm x 12.50 mm dimensions. Confirm RoHS3 compliance status if required by regional regulations before finalizing procurement orders.

Selection Notes

Select this component when dual independent windings are required within a single compact footprint. The shielded construction is suitable for environments sensitive to magnetic coupling. Evaluate thermal performance based on the specified rated currents for both series and parallel modes to ensure adequate heat dissipation in the target application.

Part Context

This part belongs to the SRF1280 series of dual-winding shielded power inductors manufactured by Bourns Inc. The series is characterized by high saturation currents and low DC resistance, targeting high-density power conversion designs. The 1280 package size provides a standardized form factor for various industrial and consumer electronics applications.

Replacement Considerations

Direct substitutes include other SRF1280 series variants such as SRF1280-330M or SRF1280-102M, provided their inductance and current ratings align with the circuit requirements. Cross-series replacements require careful verification of pinout compatibility and thermal characteristics.