5977003801

Overview

The Fair-Rite 5977003801 is a solid toroidal ferrite core manufactured from Material 77. It features an outer diameter of 61 mm and an inner diameter of 35.55 mm, with a height of 25.4 mm. This component is designed for closed magnetic circuit applications, offering medium permeability characteristics suitable for specific frequency ranges.

Feature Summary

• Solid toroidal geometry for closed magnetic circuits
• Material 77 composition for medium permeability
• Suitable for EMI suppression and inductor construction

Applications

• Common mode choke implementation
• Balun transformer cores
• RFI reduction circuits
• Inductor core assembly

Procurement Notes

Verify the Material 77 designation against specific application frequency requirements. Confirm physical dimensions match design constraints. Check RoHS compliance status if required by end-product regulations. Ensure supplier documentation matches the manufacturer part number exactly to avoid material grade confusion.

Selection Notes

Select this core when medium permeability and high saturation flux density are required. Material 77 is optimized for power applications and low-frequency noise suppression. Compare effective volume and thermal properties against alternative materials like 31 or 43 for specific impedance needs.

Part Context

This component belongs to the Fair-Rite Materials 77 series, specialized for power electronics and audio frequency applications. The toroidal shape minimizes electromagnetic interference leakage compared to open-core designs. It serves as a fundamental passive element in magnetic component manufacturing.

Replacement Considerations

Equivalent parts include FT240-77 or compatible Material 77 toroids with identical 61mm OD and 35.55mm ID dimensions. Verify that substitute suppliers provide genuine Fair-Rite material specifications to ensure consistent magnetic performance.