CHF9838CBF250R

Overview

The CHF9838CBF250R is a stripline termination resistor manufactured by Bourns Inc. It features a chassis mount design with a flange mounting type, suitable for high-power applications. The component has a resistance value of 25 Ohms with a tolerance of 5%. It is rated for a power dissipation of 250W and operates within a frequency range of 0Hz to 3GHz. The substrate material is BeO, and the resistive film is constructed for general-purpose RF IC termination.

Feature Summary

• Stripline construction for stable RF performance
• High power handling capability at 250W
• Broadband operation from DC to 3GHz
• Robust flange mount for secure installation

Applications

• RF IC termination in general purpose circuits
• High power signal processing systems
• Broadband communication equipment
• Test and measurement instrumentation

Procurement Notes

Verify the specific ordering suffix against the official Bourns datasheet to ensure the correct resistance value and tolerance are selected. Confirm that the flange mount dimensions match the mechanical constraints of the target enclosure. Check for RoHS compliance status if required by the manufacturing process. Ensure the thermal management solution can handle the 250W dissipation rating effectively.

Selection Notes

Select this component when a high-power, broadband termination is required for RF applications up to 3GHz. The 25 Ohm value is suitable for specific impedance matching or load requirements. Consider the physical size and flange mounting style for integration into chassis-mounted designs. Evaluate the thermal environment to ensure the BeO substrate can dissipate heat efficiently under continuous load conditions.

Part Context

This part belongs to the CHF9838CBF series of 250W stripline terminations and resistors from Bourns. These components are designed for demanding power and sensing applications where high stability and precision are necessary. The series utilizes BeO substrates to provide excellent thermal conductivity and electrical isolation for high-power RF environments.

Replacement Considerations

Consult the official Bourns documentation for direct cross-references. Verify that any substitute component matches the 250W power rating, 25 Ohm resistance, 5% tolerance, and 0-3GHz frequency range. Ensure the replacement supports flange mounting and uses compatible substrate materials for similar thermal performance.