PM1812-2R2J

Fixed Inductors Overview

The Bourns Inc. PM1812-2R2J is a fixed surface-mount power inductor with an inductance of 2.2 µH and a tolerance of ±5%. It utilizes an unshielded wirewound construction with an iron powder core, housed in a 1812 (4532 metric) package measuring 4.50mm x 3.20mm x 3.20mm. The component features a maximum DC resistance of 700 mΩ and supports a rated current of 380 mA. It exhibits a Q factor of 50 at 7.96 MHz and a self-resonant frequency of 55 MHz. Operating temperature ranges from -55°C to +125°C.

Fixed Inductors Feature Summary

• Unshielded wirewound design utilizing iron powder core material for stable magnetic performance
• RoHS3 compliant manufacturing process ensuring environmental safety standards
• Surface mount installation suitable for automated PCB assembly processes

Fixed Inductors Applications

• General purpose power filtering in electronic circuits
• DC-DC converter input or output stages
• Signal processing choke applications

Fixed Inductors Procurement Notes

Verify the obsolete status of this specific part number before procurement planning. Official sources indicate that the PM1812-2R2J is no longer manufactured by Bourns Inc. Sourcing should focus on active replacement components such as the PM1812-2R2J-RC or equivalent alternatives from other manufacturers to ensure supply chain continuity and availability.

Fixed Inductors Selection Notes

Select verified substitutes like the PM1812-2R2J-RC which maintains identical electrical parameters including 2.2 µH inductance and 380 mA current rating. Ensure the replacement component matches the 1812 footprint dimensions and operates within the required -55°C to +125°C temperature range. Confirm that the substitute offers comparable Q factor and self-resonant frequency characteristics for circuit stability.

Fixed Inductors Part Context

This component belongs to the PM1812 series of power inductors produced by Bourns Inc., formerly associated with J.W. Miller magnetics assets. The series represents standard surface-mount solutions for power management applications. The PM1812-2R2J specifically denotes the 2.2 µH variant within this unshielded wirewound family, designed for compact PCB layouts requiring moderate current handling capabilities.

Fixed Inductors Replacement Considerations

Public confirmed substitutes include CM453232-2R2JL by Bourns Inc. and PM1812-2R2J-RC by Bourns Inc. These parts share similar electrical specifications and physical dimensions. Verify compatibility with existing board space and thermal requirements when transitioning from the obsolete PM1812-2R2J.