SDQ25-821-R

Arrays, Signal Transformers Overview

The SDQ25-821-R is a shielded two-coil inductor array manufactured by Eaton Electronics Division. It features a surface-mount design with dimensions of 5.20mm x 5.20mm x 2.50mm. The component provides an inductance of 824.3 µH in series connection and 206.1 µH in parallel connection, with a tolerance of ±20%. DC resistance measures 28.99 Ohms in series and 7.25 Ohms in parallel. Rated currents are 125 mA for series and 250 mA for parallel configurations. Saturation currents are specified at 62.5 mA (series) and 125 mA (parallel). It operates within a temperature range of -40°C to 125°C.

Arrays, Signal Transformers Feature Summary

• Dual-coil configuration enabling flexible series or parallel circuit integration
• Fully shielded construction to minimize electromagnetic interference
• Compact surface-mount footprint suitable for dense PCB layouts

Arrays, Signal Transformers Applications

• SEPIC converter circuits
• Power supply filtering applications
• Signal processing stages requiring coupled inductance

Arrays, Signal Transformers Procurement Notes

Verify the specific electrical parameters against the official Eaton datasheet before implementation. Confirm that the package dimensions and pinout align with the target PCB footprint. Ensure the operating temperature range meets the environmental requirements of the final assembly. Cross-reference the manufacturer part number to avoid confusion with similar series components.

Arrays, Signal Transformers Selection Notes

Select this component when a dual-inductor solution is required for coupled applications such as SEPIC converters. The shielded design is appropriate for noise-sensitive environments. Evaluate the low rated current capabilities to ensure they match the load requirements. Consider the physical size constraints relative to other available inductor arrays in the SDQ series.

Arrays, Signal Transformers Part Context

This component belongs to the SDQ series of power inductors from Eaton Electronics Division. The series offers various inductance values and current ratings in a standardized small outline package. These devices are designed for high-frequency switching applications where space efficiency and magnetic shielding are critical design factors.

Arrays, Signal Transformers Replacement Considerations

Consult the Eaton SDQ series datasheet for direct substitutes with matching inductance and current ratings. Verify mechanical compatibility before replacing existing designs with alternative part numbers.