PTHF250-894

Fixed Inductors Overview

The Delevan PTHF250-894 is a shielded toroidal power choke designed for through-hole PCB mounting. It features an inductance of 250 µH with a tolerance of ±10%. The component supports a maximum DC current of 5 A and has a maximum DC resistance of 60 mΩ. Its self-resonant frequency is specified at 1 MHz, tested at 1 kHz. The unit utilizes radial leads and is classified as a fixed inductor suitable for power applications.

Fixed Inductors Feature Summary

• Shielded toroidal core construction for electromagnetic interference reduction
• Radial lead termination for standard through-hole printed circuit board integration
• High current handling capability with low direct current resistance

Fixed Inductors Applications

• Power supply filtering circuits
• Common mode noise suppression in electronic systems
• General power electronics signal conditioning

Fixed Inductors Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact physical dimensions and mounting orientation. Confirm RoHS compliance status directly with the supplier, as historical data indicates potential variations in lead content across different production batches or sub-models within the same series. Ensure the ordering part number matches the required horizontal or vertical mount configuration if applicable to the specific revision.

Fixed Inductors Selection Notes

Select this component when a shielded toroidal inductor with 250 µH nominal value is required for through-hole assembly. Consider the 5 A saturation current limit and 60 mΩ DCR for thermal management in high-current designs. Compare against unshielded alternatives if space constraints allow, noting that shielding provides superior noise performance but may impact layout density.

Fixed Inductors Part Context

This part belongs to the PTHF series of toroidal power chokes manufactured by Delevan (API Delevan). The series offers various inductance values and current ratings tailored for power line filtering. The PTHF250-894 specifically represents a mid-range inductance option within this family, balancing inductive reactance with current carrying capacity for robust power stage applications.

Fixed Inductors Replacement Considerations

Cross-reference with PTKM250-894 for similar inductance but verify mounting style differences. Check PTHF250-894H for potential horizontal mount variants within the same electrical specification family.