CHF190104KBF250R

Overview

The Bourns CHF190104KBF250R is a high-frequency RF terminator resistor designed for demanding signal integrity applications. It features a chassis mount configuration with flange mounting for secure installation and efficient heat dissipation. The component provides a nominal resistance of 25 ohms with a tolerance of ±5%. Rated for 1000 watts of power, it operates effectively within a frequency range of 0 Hz to 1 GHz. The unit measures 9.1 mm in height and utilizes the 190104 (4826 metric) package case.

Feature Summary

• High-power handling capability suitable for significant energy dissipation
• Broadband frequency performance extending from DC to 1 GHz
• Robust chassis mount design ensuring stable mechanical attachment

Applications

• RF signal termination in high-frequency circuits
• Impedance matching networks requiring precise resistive loads
• Power testing environments utilizing flange-mounted terminators

Procurement Notes

Verify component availability as this specific part number is listed as obsolete in current distributor catalogs. Confirm that the 190104 package dimensions and flange mounting interface align with existing chassis designs. Ensure replacement strategies account for the discontinued status by identifying equivalent high-power RF terminators with compatible 25-ohm specifications and thermal ratings.

Selection Notes

Select this component when high-power dissipation and wideband frequency response are critical requirements. The flange mount style is ideal for applications necessitating direct chassis integration for thermal management. Consider the 1000W rating and 25-ohm impedance for systems requiring robust signal termination without reflection issues in the sub-gigahertz range.

Part Context

This resistor belongs to the Bourns CHF series of high-frequency/RF resistors. These components are engineered for precision and stability in radio frequency environments. The series typically offers various resistance values and power ratings to support diverse RF system architectures, emphasizing reliability in high-energy signal paths.

Replacement Considerations

Public confirmed substitute part numbers are not available due to the obsolete product status. Designers should evaluate alternative high-power RF terminators from Bourns or other manufacturers that match the 25-ohm value, 1000W power rating, and flange mount form factor.