K2202GRP

Overview

The Littelfuse K2202GRP is a high-voltage trigger diode, classified as a SIDAC within the thyristor family. It operates in the through-hole DO-15 package and belongs to the Kxxxzy series. The device features a breakover voltage (VBO) range of 205 V to 230 V with a maximum breakover current (IBO) of 10 uA. It supports a non-repetitive on-state current of 16.7 A or 20 A and has a rated repetitive off-state voltage (VDRM) of 180 V. The component exhibits a holding current (Ih) maximum of 150 mA and an on-state voltage of 3 V. It is rated for a continuous RMS current (It RMS) of 1 A and functions reliably within a temperature range of -40 C to +85 C.

Feature Summary

• Bidirectional switching capability for AC circuit triggering applications
• High surge current handling capacity for transient protection events
• Glass-passivated junction construction for parameter stability

Applications

• Triggering circuits for silicon-controlled rectifiers (SCRs)
• Overvoltage protection in AC power lines
• Phase control circuits for lighting and motor speed regulation

Procurement Notes

Verify the specific suffix 'GRP' against official Littelfuse documentation to confirm exact binning or packaging variations compared to the standard K2202G. Ensure the procurement channel provides valid RoHS compliance certificates and original manufacturer traceability. Confirm that the DO-15 through-hole package matches the design requirements before finalizing orders.

Selection Notes

Select this component when a bidirectional trigger device with a 205 V to 230 V breakover voltage is required. Ensure the circuit can handle the 1 A RMS current rating and the specified surge currents. Verify that the operating environment stays within the -40 C to +85 C range and that the DO-15 package fits the PCB layout constraints.

Part Context

The K2202GRP belongs to the Kxxxzy series of high-voltage trigger diodes manufactured by Littelfuse. These devices are designed as integrated alternatives to discrete diac-triac combinations, offering simplified assembly and improved noise immunity in AC switching applications. The series is characterized by robust glass-passivated junctions and consistent electrical parameters for reliable phase control.

Replacement Considerations

The K2202G is a direct functional equivalent within the same series. Verify pinout compatibility and exact voltage tolerances before substitution. Other SIDACs with similar VBO ranges may require circuit adjustments.