SRF1280-331M

Overview

The Bourns SRF1280-331M is a dual-winding shielded power inductor array from the SRF1280 series. It features a wirewound construction with a ferrite core and measures 12.5 mm x 12.5 mm x 8.0 mm. The component offers an inductance of 330 µH per coil when connected in parallel, or 1.32 mH in series. It supports a maximum current of 1.04 A in parallel configuration and 522 mA in series. The DC resistance is 540 mΩ (parallel) and 2.172 Ω (series). Operating temperature ranges from -40°C to +125°C.

Feature Summary

• Dual-coil architecture allowing flexible series or parallel circuit integration
• Shielded design minimizes electromagnetic interference
• Wirewound ferrite core ensures stable performance under load

Applications

• Power supply output filtering
• DC-DC converter input/output stages
• Signal processing circuits requiring coupled inductance

Procurement Notes

Verify the specific package variant (Reel, Cut Tape, or Digi-Reel) required for your assembly line before ordering. Confirm that the dual-winding specifications align with your schematic requirements. Check RoHS compliance status if environmental regulations apply to your manufacturing region. Ensure the operating temperature range meets your system's thermal constraints.

Selection Notes

Select this component when a compact dual-inductor solution is needed to save PCB space. Compare the parallel versus series current ratings against your load requirements. Consider the physical dimensions (12.5x12.5mm) for footprint compatibility. Evaluate the shielding benefits if EMI sensitivity is a primary design constraint.

Part Context

This part belongs to the Bourns SRF1280 series of surface-mount power inductors. The series is characterized by high-current capabilities and shielded magnetic structures. It serves as a specialized alternative to discrete single-coil inductors where coupling or space efficiency is prioritized.

Replacement Considerations

PF0553.334NL by Pulse Electronics is listed as a direct substitute. Verify electrical parameters and mechanical dimensions before swapping components.