K1300E70

Overview

The Littelfuse K1300E70 is a standard bidirectional SIDAC from the Kxxxzy series, functioning as a silicon voltage-triggered switch. It features a breakover voltage (VBO) range of 120 V to 138 V and a repetitive peak off-state voltage (VDRM) of 90 V. The device supports an on-state RMS current (IT(RMS)) of 1 A at 50/60 Hz and can withstand a peak non-repetitive surge current (ITSM) of 20 A for a single cycle at 60 Hz. It operates within a junction temperature range of -40°C to 125°C and utilizes a TO-92 package with Type 70 lead form.

Feature Summary

• Glass-passivated junctions ensure ruggedness and dependability in harsh environments.
• Bilateral switching capability allows operation in both voltage polarities.
• Negative resistance region enables rapid transition to low on-state voltage upon triggering.

Applications

• High voltage power supplies
• Natural gas igniters
• High-pressure Sodium lamps
• Xenon flash ignition

Procurement Notes

Verify the specific ordering suffix 'E70' corresponds to the TO-92 package with Type 70 lead form when sourcing. Confirm packaging options such as bulk or ammo pack availability directly with Littelfuse or authorized distributors. Ensure compliance with RoHS standards if required by the application environment.

Selection Notes

Select this component based on the required breakover voltage range of 120 V to 138 V. Ensure the circuit design accommodates the 90 V maximum repetitive off-state voltage to prevent unintended triggering. Verify that the load current does not exceed the 1 A RMS rating and that surge currents remain within the specified ITSM limits.

Part Context

This part belongs to the Kxxxzy Series of Standard Bidirectional SIDACs manufactured by Littelfuse. The series offers various breakover voltages ranging from 79 V to 330 V across different packages including DO-15, DO-214, and TO-92. The K1300 variant specifically targets applications requiring mid-range high-voltage triggering capabilities.

Replacement Considerations

Other parts in the Kxxxzy series with similar VBO ranges may serve as alternatives. For example, the K1200E70 offers a lower VBO range of 110 V to 125 V, while the K1400E70 provides a higher range of 130 V to 146 V. Package compatibility must be verified when substituting.