K1200E70

Overview

The Littelfuse K1200E70 is a standard bidirectional SIDAC from the Kxxxzy series, functioning as a silicon voltage-triggered switch. It features a breakover voltage range of 110 V to 125 V and a repetitive peak off-state voltage of 90 V. The device supports an on-state RMS current of 1 A at 50/60 Hz with a junction temperature limit of 125°C. It utilizes a TO-92 package with a Type 70 lead form, providing thermal resistance from junction to ambient of 95 °C/W. The component operates within a storage temperature range of -40°C to 150°C and includes glass-passivated junctions for environmental ruggedness.

Feature Summary

• Silicon bilateral voltage triggered switch utilizing negative resistance region for switching
• Glass-passivated junctions designed for rugged performance in harsh environments
• RoHS compliant construction with matte tin plated terminals

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm the exact package type and lead form configuration. Ensure that the selected variant matches the required thermal and electrical parameters for the intended circuit design before finalizing procurement orders.

Selection Notes

Select this component based on the required breakover voltage range of 110 V to 125 V and the need for a through-hole TO-92 package. Consider the 1 A RMS current rating and the 95 °C/W thermal resistance when designing heat dissipation strategies for the application environment.

Part Context

The K1200E70 belongs to the Littelfuse Kxxxzy series of Standard Bidirectional SIDACs. This series provides various triggering voltages ranging from 79 V to 330 V across different package options including DO-15, DO-214, and TO-92. The 'E' designation specifically indicates the TO-92 package type with a Type 70 lead form.

Replacement Considerations

Compatible substitutes within the same family include K1200G (DO-15) and K1200S (DO-214). Verify pinout compatibility and thermal characteristics when substituting packages.