74271308

Overview

The Würth Elektronik 74271308 is a STAR-TEC Snap ferrite core designed for EMI suppression. It features a cylindrical shape with an internal diameter of 13 mm and outer dimensions of approximately 30.6 mm length, 20.1 mm width, and 13 mm height. Constructed from 4W620 material, it provides 306 Ω impedance at 25 MHz and 93 Ω at 100 MHz. The unit includes a nylon clamp for secure cable installation and operates within a temperature range of -25°C to +105°C.

Feature Summary

• Integrates a nylon clamp mechanism to facilitate rapid and secure attachment to cables without tools.
• Utilizes 4W620 ferrite material composition to provide effective attenuation across specified frequency bands.
• Features a snap-fit design that allows for easy installation and removal during maintenance or testing.

Applications

• EMI/RFI filtering for power and signal cables in electronic equipment
• Suppression of noise on computer data lines and peripheral connections
• Cable management and interference reduction in general industrial applications

Procurement Notes

Verify the specific impedance requirements against your application's noise spectrum, as this component offers 306 Ω at 25 MHz and 93 Ω at 100 MHz. Confirm that the 13 mm inner diameter accommodates the target cable bundle size. Ensure the operating environment stays within the -25°C to +105°C thermal limits defined by the manufacturer. Check for RoHS compliance status if required by your assembly standards.

Selection Notes

Select this model when a quick-install solution is needed for cables up to 13 mm in diameter. The STAR-TEC series is suitable for applications requiring moderate impedance values at higher frequencies. Consider the physical dimensions (30.6 x 20.1 x 13 mm) to ensure adequate clearance in the final assembly. Compare with other STAR-TEC variants if different impedance profiles or inner diameters are required for specific cable sizes.

Part Context

This component belongs to the STAR-TEC series of openable ferrite cores from Würth Elektronik. These cores are engineered for efficient electromagnetic interference suppression in various electronic systems. The series emphasizes ease of use through integrated clamping mechanisms, allowing technicians to install the core around existing cables without disconnecting them. This approach supports efficient troubleshooting and retrofitting in complex wiring environments.

Replacement Considerations

Direct substitutes include other Wurth Elektronik STAR-TEC models with matching 13 mm inner diameters and similar impedance characteristics, such as those in the WE-NCF series if nylon clamps are acceptable. Verify that any replacement maintains the same material grade (4W620) and dimensional constraints to ensure fitment and performance equivalence.

FAQ

What is the impedance of the 74271308 at 25 MHz?

The impedance is 306 Ω at 25 MHz.

Does the 74271308 include a mounting accessory?

Yes, it includes a nylon clamp to secure the ferrite core around the cable.

What is the maximum operating temperature for this ferrite core?

The maximum operating temperature is +105°C.