CHF12545CBF500L

Overview

The Bourns CHF12545CBF500L is a high-power RF termination resistor designed for chassis mounting. It features a nominal resistance of 50 Ohms with a tolerance of 5 percent and a power rating of 500 Watts. The component operates within a frequency range up to 1 GHz, making it suitable for high-frequency applications. Physical dimensions include a length of 31.75 mm, width of 12.7 mm, and height of 6.35 mm. The package type is identified as 12545 (3175 metric), utilizing surface mount/surface mount technology end types.

Feature Summary

• Engineered for high-frequency signal termination in demanding environments
• Provides robust power handling capabilities for continuous operation
• Designed for secure chassis mounting to ensure mechanical stability

Applications

• High-frequency circuit termination
• RF power load applications
• Signal processing systems requiring precise impedance matching

Procurement Notes

Verify the current lifecycle status before procurement, as this specific model may be subject to discontinuation notices from the manufacturer. Confirm that the required 50 Ohm impedance and 500 Watt power rating align precisely with the design specifications. Ensure compatibility with existing chassis mounting hardware and thermal management solutions. Cross-reference the exact suffix codes to guarantee correct tolerance and packaging variations. Validate that the 1 GHz frequency response meets the operational requirements of the target application.

Selection Notes

Select this component when a high-power, low-inductance RF termination is required for chassis-mounted configurations. Consider the physical footprint constraints provided by the 12545 package size during layout planning. Evaluate the thermal dissipation needs associated with the 500 Watt rating to ensure adequate heat sinking. Verify that the 5 percent tolerance is acceptable for the specific circuit precision requirements. Compare against other series models if different power ratings or impedance values are needed.

Part Context

This resistor belongs to the CHF series of RF power resistors manufactured by Bourns. The series is characterized by high power density and stable performance at radio frequencies. These components are typically used in test equipment, communication systems, and industrial RF applications where reliable energy dissipation is critical. The CHF series offers various resistance values and power ratings to suit diverse engineering needs.

Replacement Considerations

Public confirmed substitute part numbers: TAP600K50RE.