UT2A-1KJ1

Overview

The UT2A-1KJ1 is a wirewound power resistor manufactured by Bourns under the Riedon brand. It features an axial leaded package with a ceramic core and silicone coating. The component has a resistance of 1 kOhms, a power rating of 3 W, and a tolerance of 5%. It operates within a temperature range of -55°C to +350°C.

Feature Summary

• High-temperature stability enabled by centerless ground ceramic core construction
• Robust performance in harsh environments due to high-temperature silicone coating
• Standard MIL-R-26 / MIL-R-39007 compliance for reliability

Applications

• Industrial control systems requiring high thermal endurance
• Power supply circuits demanding stable resistance at elevated temperatures
• Military and aerospace electronic assemblies

Procurement Notes

Verify the specific manufacturer source, as Bourns acquired Riedon. Confirm RoHS compliance status directly with the supplier documentation. Ensure the axial lead dimensions match the PCB layout requirements before finalizing procurement decisions.

Selection Notes

Select this component when applications require high power dissipation in compact axial packages. Consider the wide operating temperature range for environments exceeding standard industrial limits. Verify that the 5% tolerance meets the circuit precision requirements.

Part Context

This part belongs to the UT series of wirewound resistors, designed for general-purpose power applications. The UT2A designation indicates a specific power rating and physical size within the family. These components are widely used in electronics where reliability and thermal stability are critical.

Replacement Considerations

Check for direct equivalents from Vishay or other manufacturers offering similar axial wirewound specifications. Ensure replacement parts match the 3 W power rating and 1 kOhm resistance value.