CHF12545CBF500R

Overview

The Bourns CHF12545CBF500R is a high-frequency RF power resistor designed for chassis mounting applications. It features a thick film construction with an epoxy coating, providing robust performance in demanding environments. The component offers a resistance value of 50 Ohms with a tolerance of 5%, ensuring precise signal termination. Rated for 500 Watts of continuous power dissipation, it supports frequencies up to 1 GHz. This flange-mount resistor utilizes surface mount technology (SMD/SMT) end types and is packaged in trays for industrial distribution.

Feature Summary

• High-power dissipation capability rated at 500 Watts for sustained operation
• Optimized for high-frequency applications with performance up to 1 GHz
• Robust thick film construction with epoxy coating for environmental protection
• Chassis mount design with flange configuration for secure installation

Applications

• RF signal termination in high-frequency communication systems
• Power absorption in radio frequency test and measurement equipment
• Impedance matching networks requiring high power handling
• Industrial RF heating and processing equipment

Procurement Notes

Verify the specific ordering suffix 'R' indicates tray packaging when sourcing from distributors. Confirm that the 500W rating aligns with thermal management requirements in the final assembly. Check RoHS compliance status as indicated in official documentation. Ensure chassis mounting hardware compatibility with the flange dimensions before integration into the system design.

Selection Notes

Select this model when high power handling and wide bandwidth are required for RF termination. The 50 Ohm impedance matches standard coaxial systems. Consider the physical size and thermal dissipation needs due to the 500W rating. Verify that the thick film technology meets the stability requirements for the specific frequency range. Compare against other series if lower power or different mounting styles are needed.

Part Context

This component belongs to the Bourns CHF series of RF power resistors. These resistors are engineered for high reliability in critical RF applications. The series provides various power ratings and resistance values to suit different system requirements. The CHF12545CBF500R represents a high-power variant within this lineup, suitable for demanding industrial and commercial RF environments.

Replacement Considerations

Check for discontinued models in the CHF series as some variants may be phased out. Look for equivalent 500W RF resistors from other manufacturers if supply chain issues arise. Ensure any substitute matches the 50 Ohm value, 5% tolerance, and 1 GHz frequency limit. Verify mechanical compatibility with existing chassis mounting structures.