1812R-470J

Fixed Inductors Overview

The Delevan 1812R-470J is a fixed surface-mount inductor designed for high-frequency applications. It features an unshielded construction with a ferrite core, housed in a standard 1812 (4532 metric) package measuring 4.83 mm by 3.4 mm by 3.4 mm. The component provides an inductance of 47 nH with a tolerance of ±5%. It supports a maximum DC current of 870 mA and exhibits a maximum DC resistance of 200 mOhms. The self-resonant frequency reaches 1 GHz, with a Q factor of 30 at 50 MHz. Operating temperatures range from -55°C to +125°C.

Fixed Inductors Feature Summary

• Unshielded design suitable for minimizing magnetic interference in specific layouts
• High self-resonant frequency capability for RF signal integrity
• Compact surface-mount footprint for dense PCB integration

Fixed Inductors Applications

• RF choke circuits
• High-frequency filtering
• Impedance matching networks

Fixed Inductors Procurement Notes

Verify the manufacturer designation carefully, as API Delevan components may be listed under various legacy branding. Confirm RoHS compliance status through official documentation prior to procurement. Ensure the unshielded variant matches the schematic requirements, as shielded alternatives exist within the same series. Validate package dimensions against the specific PCB land pattern to ensure proper solder joint formation during assembly.

Fixed Inductors Selection Notes

Select this component when a low-inductance value near 47 nH is required for high-frequency operation. The unshielded type is preferred when magnetic coupling with adjacent components must be minimized or controlled differently than with shielded parts. Verify that the 870 mA current rating meets the circuit's peak load requirements without causing saturation. Consider the 200 mOhm DCR impact on power loss in the specific application path.

Fixed Inductors Part Context

This part belongs to the 1812R series of fixed inductors manufactured by API Delevan. The series offers various inductance values in a standardized 1812 package. The 'J' suffix indicates a ±5% tolerance. These components are engineered for reliability in demanding electronic environments, providing stable performance across the specified temperature range.

Fixed Inductors Replacement Considerations

Direct substitutes include other 47 nH, 1812 package, unshielded inductors with comparable current ratings. Check datasheets for identical self-resonant frequency and Q factor specifications to ensure RF performance compatibility.