K1500E70AP

Overview

The Littelfuse K1500E70AP 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 140V to 170V and a repetitive peak off-state voltage of 90V. The device supports an on-state RMS current of 1A and a peak non-repetitive surge current of 20A at 60Hz. Operating within a junction temperature range of -40°C to 125°C, it utilizes glass-passivated junctions for ruggedness. Key electrical parameters include a dynamic holding current of 10mA to 150mA, a peak on-state voltage of 1.5V, and a maximum breakover current of 10µA.

Feature Summary

• Bilateral switching capability with negative resistance region for low on-state voltage conduction
• Glass-passivated junction construction for environmental durability
• RoHS compliant manufacturing process

Applications

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

Procurement Notes

Verify the specific suffix 'AP' corresponds to the Ammo Pack packaging configuration as defined in the official datasheet. Confirm that the TO-92 lead form matches the Type 70 specification required for the target circuit board layout. Ensure compliance with RoHS directives if applicable to the final assembly requirements.

Selection Notes

Select this component when a bidirectional trigger device with a 140V to 170V breakover threshold is required. The TO-92 package is suitable for through-hole mounting where space allows. Consider the 90V VDRM rating to ensure the device remains off during normal operating voltages below this limit while providing protection against higher transient events.

Part Context

This part belongs to the Kxxxzy SIDAC family, which includes various voltage ratings from 79V to 330V. The 'K1500' designation indicates the specific voltage class within the standard bidirectional series. Other packages such as DO-15 and DO-214 are available for different thermal or spatial constraints within the same functional family.

Replacement Considerations

Other parts in the Kxxxzy series may serve as alternatives if different voltage thresholds are acceptable. Verify that any substitute maintains the TO-92 package and Type 70 lead form dimensions to ensure mechanical compatibility.