RL-1256-2-120

Fixed Inductors Overview

The RL-1256-2-120 is a fixed wirewound inductor manufactured by Renco Electronics, Inc. It features an inductance of 120 µH with a maximum DC resistance of 90 mΩ and a current rating of 4 A. The component utilizes an unshielded design and is housed in a radial vertical cylinder package suitable for through-hole mounting. Physical dimensions include a diameter of 0.830 inches (21.08 mm). Electrical specifications are measured at 25°C, and the device supports a 500 VDC hipot test for one minute between windings and the inner diameter.

Fixed Inductors Feature Summary

• Unshielded wirewound construction for standard electromagnetic applications
• Radial vertical cylinder package designed for through-hole PCB mounting
• High current handling capability rated at 4 A
• Low DC resistance of 90 mΩ maximum

Fixed Inductors Applications

• Power supply filtering circuits
• General-purpose signal processing chokes
• Industrial control board integration

Fixed Inductors Procurement Notes

Verify the specific manufacturer part number against official Renco or Standex Electronics documentation to confirm electrical tolerances and physical dimensions. Ensure that the through-hole mounting style aligns with the target PCB layout requirements. Confirm RoHS compliance status if required by project specifications, as indicated by distributor listings. Cross-reference the 90 mΩ maximum DC resistance and 4 A current rating with circuit design constraints to ensure adequate performance margins under operating conditions.

Fixed Inductors Selection Notes

Select this component when an unshielded wirewound inductor with a 120 µH nominal value is required for through-hole assembly. The 4 A current rating and low DC resistance make it suitable for power stages where moderate shielding is not critical. Consider the radial vertical form factor for space-constrained vertical mounting scenarios. Validate that the 500 VDC hipot requirement meets insulation standards for the intended application environment.

Fixed Inductors Part Context

Renco Electronics, Inc., now part of Standex Electronics, specializes in custom and standard inductors, transformers, and coils. The RL-1256 series represents a line of fixed wirewound inductors designed for robust industrial and commercial applications. This specific model falls within the broader category of passive magnetic components used for energy storage and noise suppression in electronic circuits.

Fixed Inductors Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Verify compatibility with alternative manufacturers based on matching inductance, current rating, and physical footprint specifications.