K2200E70AP

Overview

The Littelfuse K2200E70AP is a silicon bilateral voltage-triggered switch (SIDAC) from the Kxxxzy series, housed in a TO-92 package. It features a breakover voltage range of 205V to 230V and a repetitive peak off-state voltage of 180V. The device supports an on-state RMS current of 1A at 50/60Hz with a junction temperature limit of 125°C. Key electrical parameters include a peak on-state voltage of 1.5V at 1A, a dynamic holding current between 10mA and 150mA, and a breakover current of 10μA. Thermal resistance from junction to ambient is 95°C/W.

Feature Summary

• Utilizes glass-passivated junctions for ruggedness and dependable performance in harsh environments.
• Exhibits negative resistance region switching behavior to achieve low on-state voltage upon triggering.
• Conduction persists until current drops below the minimum holding threshold or is interrupted.

Applications

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

Procurement Notes

Verify the component marking 'K2200E' against the datasheet part numbering system to confirm the specific voltage rating and package type. Ensure the ordering suffix matches the required packaging mode, such as Ammo Pack, as variations exist within the Kxxxzy family. Confirm RoHS compliance status through official Littelfuse documentation prior to integration.

Selection Notes

Select this component based on the required breakover voltage range of 205V to 230V for the specific circuit application. Consider the thermal resistance of 95°C/W when designing heat dissipation strategies for the TO-92 package. Verify that the maximum allowable case temperature aligns with the expected RMS on-state current and ambient operating conditions defined in the manufacturer's graphs.

Part Context

This SIDAC belongs to the standard bidirectional Kxxxzy series manufactured by Littelfuse under the Teccor brand. The series offers various voltage ratings and package options including DO-15, DO-214, and TO-92. The K2200 variant specifically targets applications requiring higher trigger voltages compared to lower-rated members like the K1500 or K2000.

Replacement Considerations

Compatible substitutes within the same series include K2200G (DO-15), K2200S (DO-214), and K2200E70 (Bulk TO-92). These parts share identical electrical characteristics but differ in physical package dimensions and packaging format. Verify mechanical fit and lead configuration before substitution.