K0820S1URP

Overview

The Littelfuse K0820S1URP is a high-voltage trigger diode (SIDAC) from the Teccor Kxxx0yU series, designed for overvoltage protection in electronic circuits. It features a bidirectional switching characteristic with a breakover voltage of 90 V and a maximum holding current of 80 mA. The device supports an RMS on-state current of 1 A and can withstand non-repetitive peak currents up to 1 A. It operates within a temperature range of -40°C to +125°C and is housed in a DO-214AC surface-mount package.

Feature Summary

• Bidirectional switching capability for symmetrical overvoltage protection
• High surge current handling capacity for transient suppression
• Surface-mount construction for automated PCB assembly

Applications

• Protection of telecommunication lines against lightning-induced surges
• Overvoltage protection for sensitive electronic components in industrial equipment
• Transient voltage suppression in broadband access networks

Procurement Notes

Verify the specific suffix 'S1' against official Littelfuse documentation to confirm the exact voltage rating and package variant, as generic series data may not reflect all manufacturing revisions. Ensure the component meets RoHS and REACH compliance requirements for your target market before finalizing procurement orders.

Selection Notes

Select this component when a bidirectional trigger diode with a nominal breakover voltage near 90 V is required for surface-mount applications. Compare the 1 A RMS current rating against the circuit's expected load to ensure adequate margin. Verify that the DO-214AC footprint matches the design layout constraints.

Part Context

This part belongs to the Littelfuse Teccor SIDACtor family, which specializes in high-energy transient protection devices. These components are engineered to replace traditional gas discharge tubes in many applications due to their faster response times and lower capacitance, offering reliable protection in compact form factors.

Replacement Considerations

Direct replacements must match the 90 V breakover voltage, 1 A RMS current, and DO-214AC package. Verify equivalent performance characteristics such as holding current and leakage current to ensure circuit compatibility without modification.