28R1261-100

Overview

The 28R1261-100 is a solid free-hanging ferrite core manufactured by Laird-Signal Integrity Products. It features a material composition designated as type 28, providing an impedance of 350 Ohms at a test frequency of 100 MHz. The component has a rectangular cross-section with an internal slot measuring 0.988 inches (25.10 mm) in width and 0.035 inches (0.90 mm) in height. External dimensions are 1.260 inches (32.00 mm) in width and 0.305 inches (7.75 mm) in height. It operates within a temperature range of -40°C to +125°C.

Feature Summary

• Solid construction designed for flat ribbon cable suppression
• High impedance performance at 100 MHz using type 28 material
• Free-hanging installation method without mounting hardware

Applications

• Electromagnetic interference suppression on flat ribbon cables
• Signal integrity enhancement in high-speed digital interfaces
• Common mode noise reduction in data transmission lines

Procurement Notes

Verify the specific impedance value and physical slot dimensions against the official datasheet before integration. Confirm that the operating temperature range meets the environmental requirements of the final assembly. Ensure compatibility with the target cable thickness to guarantee proper fit within the internal slot.

Selection Notes

Select this component when suppressing noise on flat cables requiring high impedance at 100 MHz. The solid design offers robust mechanical stability compared to split cores. Verify that the internal slot dimensions accommodate the specific flat cable geometry without excessive force or loose fitting.

Part Context

This part belongs to the 28R series of ferrite cable cores from Laird-Signal Integrity Products. These components are engineered specifically for EMI suppression applications involving flat ribbon cables. The series utilizes specialized ferrite materials optimized for high-frequency noise attenuation in electronic assemblies.

FAQ

What is the internal slot dimension for cable insertion?

The internal slot measures 0.988 inches (25.10 mm) in width and 0.035 inches (0.90 mm) in height.

Is this component suitable for through-hole mounting?

No, it is a free-hanging solid core designed to slide onto cables rather than being soldered to a board.