K1500S1URP

Overview

The Littelfuse K1500S1URP is a high-voltage trigger diode (SIDAC) manufactured by Littelfuse, designed for surface mount applications in the DO-214 package. It functions as a silicon bilateral voltage-triggered switch that conducts when the applied voltage exceeds its breakover point. Key electrical parameters include a breakover voltage (VBO) of 183 V and a maximum turn-on current (IBO) of 10 uA. The device supports an RMS on-state current (It RMS) of 1 A and can withstand non-repetitive on-state currents up to 20 A. It operates within a temperature range of -40 C to +125 C.

Feature Summary

• Features glass-passivated junctions to ensure ruggedness and dependability in harsh environments.
• Designed specifically for AC circuit orientation with triggering voltages suitable for high-voltage power supplies.
• Switches on through a negative resistance region to a low on-state voltage upon exceeding the breakover threshold.

Applications

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

Procurement Notes

Verify the specific suffix '1URP' against official Littelfuse documentation to confirm it denotes the standard unidirectional SIDAC variant in reel packaging. Confirm RoHS compliance status directly from the manufacturer's datasheet or component specifications before procurement. Ensure the ordering quantity aligns with the factory pack quantity requirements specified in the official product data.

Selection Notes

Select this component when a high-voltage trigger mechanism is required for AC circuits. The 183 V breakover voltage makes it suitable for specific ignition and lamp driver applications. Verify that the 1 A RMS current rating meets the load requirements. Ensure the DO-214 SMD package fits the PCB layout constraints. Compare against other K-series SIDACs if different voltage thresholds are needed.

Part Context

The K1500S1URP belongs to the Kxxx0yU series of Teccor brand SIDACs produced by Littelfuse. These devices are silicon bilateral voltage-triggered switches characterized by their ability to handle high voltages and provide reliable switching in industrial and consumer electronics. The part is categorized under thyristors and sidacs within Littelfuse's product portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers for K1500S1URP were not identified in the provided source material. Consult Littelfuse engineering support for qualified replacements if this specific part number is unavailable.

FAQ

What is the holding current specification for the K1500S1URP?

The maximum holding current (Ih) for the K1500S1URP is 80 mA.

Does the K1500S1URP have a rated repetitive off-state voltage?

Yes, the rated repetitive off-state voltage (VDRM) is 150 V.

What is the leakage current in the off-state?

The off-state leakage current at VDRM is 5 uA.