K1300G

Overview

The Littelfuse K1300G is a silicon bilateral voltage-triggered switch (SIDAC) from the Kxxxzy series, housed in a DO-15 package. It features glass-passivated junctions for ruggedness and RoHS compliance. The device switches on when the applied voltage exceeds its breakover point, maintaining conduction until current drops below the holding threshold. Key electrical parameters include a breakover voltage (VBO) range of 120 V to 138 V, a repetitive peak off-state voltage (VDRM) of 90 V, and an on-state RMS current rating of 1 A at 50/60 Hz. The component operates within a junction temperature range of -40°C to 125°C and supports a peak non-repetitive surge current of 20 A.

Feature Summary

• Bilateral switching capability with negative resistance region transition
• Glass-passivated junction construction for environmental durability
• RoHS compliant manufacturing process

Applications

• High voltage power supplies
• Natural gas igniters
• High-pressure Sodium lamp firing circuits
• Xenon flash ignition systems

Procurement Notes

Verify the specific suffix 'G' corresponds to the DO-15 package configuration required for your design. Confirm that the 120 V to 138 V breakover voltage range aligns with your circuit's triggering requirements. Ensure thermal management strategies account for the specified junction temperature limits during operation.

Selection Notes

Select this component when a bidirectional trigger device with a 120 V to 138 V activation threshold is needed. The DO-15 package offers through-hole mounting compatibility. Consider the 1 A RMS current rating and 90 V blocking voltage to ensure adequate margin for your specific load conditions and transient environments.

Part Context

The K1300G belongs to the Kxxxzy SIDAC family, which provides standard bidirectional switching solutions. This series includes various voltage ratings and package options such as DO-214 and TO-92. The K1300 variant specifically targets applications requiring mid-range breakover voltages around 130 V.

Replacement Considerations

Compatible substitutes within the same family include K1300S (DO-214 package) and K1300E70 (TO-92 package). These alternatives share identical electrical characteristics but differ in physical footprint and mounting style.