K1300S

Overview

The Littelfuse K1300S is a silicon bilateral voltage-triggered switch (SIDAC) from the Kxxxzy series, designed for AC circuit protection and triggering applications. It features glass-passivated junctions for ruggedness in harsh environments. Key electrical specifications at TJ = 25°C include a breakover/trigger voltage (VBO) range of 120 V to 138 V and a repetitive peak off-state voltage (VDRM) of 90 V. The device supports an on-state RMS current (IT(RMS)) of 1 A at 50/60 Hz with a junction temperature below 125°C. Additional parameters include a peak on-state voltage (VTM) of 1.5 V, dynamic holding current (IH) between 10 mA and 150 mA, and a switching resistance (RS) of 100 Ω. It operates within a junction temperature range of -40°C to 125°C and a storage temperature range of -40°C to 150°C.

Feature Summary

• Silicon bilateral voltage triggered switch utilizing negative resistance region for low on-state voltage conduction.
• Glass-passivated junctions ensure component ruggedness and dependability in harsh operating environments.
• RoHS compliant construction suitable for modern electronic manufacturing standards.

Applications

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

Procurement Notes

Verify the specific package suffix 'S' corresponds to the DO-214 form factor required for your assembly process. Confirm that the ordering suffix does not alter the electrical function unless explicitly stated in official documentation. Ensure compatibility with lead-free soldering profiles as specified in the datasheet's soldering parameters section.

Selection Notes

Select the K1300S when a breakover voltage between 120 V and 138 V is required for AC circuit triggering. Ensure the application current does not exceed the 1 A RMS rating at the expected junction temperature. Consider the thermal resistance characteristics if mounting constraints limit heat dissipation, particularly regarding the junction-to-lead and junction-to-ambient ratings provided for the DO-214 package.

Part Context

The K1300S belongs to the Kxxxzy Series of Standard Bidirectional SIDACs manufactured by Littelfuse. This series encompasses various voltage ratings from 79 V to 330 V, offering options for different circuit functions and package types including DO-15, DO-214, and TO-92. The K1300S specifically addresses mid-range voltage triggering needs within this broader product family.

Replacement Considerations

Other part numbers in the Kxxxzy series, such as K1200S or K1400S, offer similar functionality with different breakover voltages. Verify that any substitute maintains the required VBO range and IT(RMS) capabilities for the specific application design.

FAQ

What is the breakover voltage range for the K1300S?

The breakover/trigger voltage (VBO) for the K1300S ranges from a minimum of 120 V to a maximum of 138 V.

What is the maximum repetitive peak off-state voltage?

The repetitive peak off-state voltage (VDRM) for the K1300S is rated at 90 V.

What is the on-state RMS current rating?

The on-state RMS current (IT(RMS)) is rated at 1 A for 50/60 Hz operation, provided the junction temperature remains below 125°C.