28B0735-300

Overview

The Laird-Signal Integrity Products 28B0735-300 is a solid cable ferrite core designed for electromagnetic interference suppression. It features an impedance of 150 Ohms at 100 MHz and utilizes Material 28 composition. The component has a free-hanging mounting type with an inner diameter of 0.400 inches (10.16 mm), an outer diameter of 0.735 inches (18.67 mm), and a length of 1.125 inches (28.58 mm). It is RoHS3 compliant and classified under ECCN EAR99.

Feature Summary

• Solid design construction for round cable applications
• Material 28 composition optimized for high-frequency noise attenuation
• Free-hanging installation method suitable for various cable diameters

Applications

• Electromagnetic interference suppression on round cables
• Signal integrity enhancement in electronic assemblies
• Common mode noise reduction in data transmission lines

Procurement Notes

Verify the specific impedance requirement of 150 Ohms at 100 MHz against your circuit's noise spectrum to ensure effective attenuation. Confirm that the inner diameter of 10.16 mm accommodates the target cable bundle without excessive clearance or tight fit. Check RoHS3 compliance status if required by your manufacturing standards. Ensure the solid core design aligns with your assembly process, as it requires manual placement around the cable rather than snap-on mechanisms.

Selection Notes

Select this component when a fixed impedance value of 150 Ohms is required for broadband noise suppression. The large inner diameter allows for multiple cables or thick single conductors. Consider the physical length of 28.58 mm for available space constraints. Material 28 offers a balance of permeability and resistivity suitable for general-purpose EMI filtering. Compare against split-core alternatives if frequent cable insertion is necessary, though this solid version typically offers higher performance per unit volume.

Part Context

This part belongs to the 28B series of cable ferrites from Laird-Signal Integrity Products. The series utilizes Material 28, which is engineered for effective noise absorption across a wide frequency range. These components are distinct from chip ferrites or surface-mount beads, serving instead as through-hole or free-hanging solutions for wire harnesses. The 28B designation indicates the material formulation and form factor within the manufacturer's catalog.

Replacement Considerations

Direct substitutes must match the 150 Ohm impedance at 100 MHz and similar physical dimensions. Verify that any alternative uses Material 28 or equivalent composition to maintain frequency response characteristics. Ensure the replacement supports the same current carrying capacity and thermal rating if used near heat sources.