K1050GRP

Overview

The Littelfuse K1050GRP is a high-voltage trigger diode, classified as a SIDAC within the Teccor product line. It operates in the DO-15 through-hole package and is designed for circuit protection applications requiring precise voltage triggering. The device features a breakdown voltage (VBO) of 110 V with a maximum turn-on current (IBO) of 10 uA. It supports an RMS on-state current (It RMS) of 1 A and can handle non-repetitive on-state currents up to 1 A. The rated repetitive off-state voltage (VDRM) is 90 V, with a leakage current of 5 uA at this rating. The component maintains a holding current (Ih) of 80 mA maximum and exhibits an on-state voltage of 1.5 V. It functions reliably across a temperature range from -40 C to +125 C.

Feature Summary

• Provides bidirectional high-voltage triggering for overvoltage protection circuits
• Utilizes a robust DO-15 axial leaded package for secure through-hole mounting
• Ensures stable operation within extended industrial temperature environments

Applications

• Overvoltage protection for sensitive electronic components
• Triggering mechanisms for thyristor-based control circuits
• Surge suppression in AC power line interfaces

Procurement Notes

Verify the specific ordering suffix 'GRP' against the manufacturer's official documentation to confirm compliance with RoHS directives and REACH SVHC requirements. Confirm that the DO-15 package dimensions match the target PCB layout constraints. Ensure the supply chain source provides valid traceability certificates for the Littelfuse Teccor brand designation.

Selection Notes

Select this component when a precise 110 V breakdown threshold is required for bidirectional triggering. Verify that the circuit design accommodates the 1 A RMS current capability without exceeding thermal limits. Compare the 90 V VDRM rating against the system's normal operating voltage to ensure adequate safety margins during steady-state conditions.

Part Context

This part belongs to the Kxxx0yU series of high-voltage trigger diodes manufactured by Littelfuse under the Teccor brand. These devices are categorized as SIDACs, distinct from standard TVS diodes due to their snap-back characteristic. The series is engineered for reliable switching in harsh electrical environments.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other SIDACs only if they match the 110 V VBO and DO-15 package specifications exactly.