SX011U

Overview

The SX011U is a sensitive gate Silicon Controlled Rectifier (SCR) manufactured by SMC Diode Solutions. It features an 800 V repetitive peak off-state voltage and a 1 A average on-state current rating. The device is housed in a TO-92 through-hole package, designed for applications requiring high dv/dt immunity and strong resistance to electromagnetic interference.

Feature Summary

• Sensitive gate triggering capability for low power control applications
• High dv/dt rate tolerance to prevent false triggering
• Strong resistance to electromagnetic interface disturbances

Applications

• Residual current device (RCD) trigger circuits
• General purpose switching applications
• Electromagnetic interference sensitive environments

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct pinout and electrical characteristics. Confirm that the TO-92 package variant matches the required thermal and mechanical constraints for the target assembly process.

Selection Notes

Select this component when high sensitivity gate control is required alongside robust noise immunity. Ensure the application voltage does not exceed the 800 V rating and that the load current remains within the 1 A limit for reliable operation in the specified package.

Part Context

This SCR belongs to the SX011 series, which is engineered for high reliability in noisy industrial and commercial environments. The series emphasizes stability against rapid voltage transients, making it suitable for safety-critical switching roles where false triggering must be minimized.

Replacement Considerations

Consult official substitution guides for equivalent SCRs with matching 800 V ratings and TO-92 packaging. Verify gate sensitivity parameters to ensure functional compatibility without altering circuit timing or trigger thresholds.