K1300E70AP

Overview

The Littelfuse K1300E70AP 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 120 V to 138 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 below 125°C. Key electrical parameters include a dynamic holding current between 10 mA and 150 mA, a peak non-repetitive surge current of 20 A for a single cycle at 60 Hz, and a critical rate of rise of on-state current of 150 A/µs. Operating temperatures range from -40°C to +125°C.

Feature Summary

• Bilateral switching capability utilizing negative resistance region for low on-state voltage conduction.
• Glass-passivated junctions designed for ruggedness and dependable performance in harsh environments.
• RoHS compliant construction with matte tin plated leads.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'AP' corresponds to the Ammo Pack packaging configuration as defined in the manufacturer's part numbering system. Confirm that the TO-92 lead form matches the Type 70 specification required for the intended assembly process. Ensure compliance with RoHS directives by checking the component marking and datasheet declarations prior to integration into final products.

Selection Notes

Select this component when a breakover voltage between 120 V and 138 V is required for AC circuit oriented protection. The TO-92 package is suitable for through-hole mounting where space allows. Designers must account for the 90 V repetitive peak off-state voltage limit to prevent unintended triggering during normal operation. Consider the thermal resistance characteristics for heat dissipation in enclosed assemblies.

Part Context

This component belongs to the Kxxxzy SIDAC family, which offers various breakover voltages ranging from 79 V to 330 V. The 'K1300' designation specifically indicates the 120 V to 138 V trigger range. The 'E' package code identifies the TO-92 form factor, while '70' denotes the specific lead dimension standard. This series provides a cost-effective solution for overvoltage protection in lighting and ignition circuits.

Replacement Considerations

Compatible substitutes within the same voltage class include the K1300G (DO-15 package), K1300S (DO-214 package), and other K1300 variants with different packaging options. Cross-package replacements require verification of physical footprint compatibility and thermal management requirements. Ensure the substitute maintains the same 90 V VDRM rating and 1 A IT(RMS) current capacity.