K2200E70

Overview

The Littelfuse K2200E70 is a silicon bilateral voltage-triggered switch (SIDAC) from the Kxxxzy series, designed for AC circuit applications. It features glass-passivated junctions for ruggedness and operates within a breakover voltage range of 205 V to 230 V. The device has a repetitive peak off-state voltage (VDRM) of 180 V and supports an on-state RMS current of 1 A at 50/60 Hz. It withstands a single-cycle non-repetitive surge current of 20 A at 60 Hz. Operating temperatures range from -40°C to +125°C junction temperature, with storage capabilities up to +150°C. The component utilizes a TO-92 package with Type 70 lead forms.

Feature Summary

• Silicon bilateral voltage-triggered switch utilizing glass-passivated junctions for environmental durability
• Designed for AC circuits with triggering voltages ranging from 79V to 330V across the series
• Capable of switching through a negative resistance region to a low on-state voltage

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 forms as documented in the manufacturer's part numbering system. Confirm that the bulk or reel packaging options align with assembly requirements. Ensure compliance with RoHS standards and check for any REACH SVHC declarations relevant to the manufacturing date code. Cross-reference the electrical parameters against the latest datasheet revision to account for potential specification updates.

Selection Notes

Select this component when a breakover voltage between 205 V and 230 V is required for AC triggering applications. The TO-92 package is suitable for through-hole mounting where space allows. Consider the 1 A RMS current rating and 20 A surge capability for energy dumping tasks. Evaluate thermal resistance values if operating near maximum junction temperatures. Compare against other series variants if different voltage thresholds or package types are needed.

Part Context

The K2200E70 belongs to the Littelfuse Kxxxzy SIDAC family, which includes various breakover voltage ratings from 79 V to 330 V. These devices are standard bidirectional switches characterized by glass-passivated junctions. The series offers multiple package options including DO-15, DO-214, and TO-92, catering to diverse mounting and performance needs in industrial and consumer electronics.

Replacement Considerations

Direct substitutes within the same voltage class include K2200G (DO-15) and K2200S (DO-214). For lower voltage requirements, consider K2000E70 (190-215 V). Higher voltage alternatives include K2300E70 (220-240 V) and K2400E70 (220-250 V). Ensure the replacement maintains the TO-92 package and Type 70 lead form if mechanical compatibility is critical.