K1050SRP

Overview

The Littelfuse K1050SRP is a high-voltage trigger diode, classified as a SIDAC within the thyristor product family. It operates in the DO-214 surface-mount package and supports SMD/SMT installation styles. The device features a breakover voltage (VBO) range of 95 V to 113 V with a maximum breakover current (IBO) of 10 uA. It has a rated repetitive off-state voltage (VDRM) of 90 V and an off-state leakage current of 5 uA at VDRM. The component handles a non-repetitive on-state current of 16.7 A or 20 A and maintains an RMS on-state current (It RMS) rating of 1 A. The holding current (Ih) maximum is 150 mA, while the on-state voltage is 1.5 V. It functions within a temperature range of -40 C to +85 C.

Feature Summary

• Bidirectional switching capability for high-voltage triggering applications
• Surface-mount construction utilizing the DO-214 package format
• Defined breakover voltage characteristics for precise circuit activation

Applications

• High-voltage trigger circuits requiring reliable switching thresholds
• Protection stages in AC line-powered equipment
• Triggering elements for silicon-controlled rectifiers (SCRs)

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status before integration. Confirm that the DO-214 footprint matches the target PCB layout. Ensure the supply chain provides original manufacturer documentation to validate the Littelfuse Teccor branding and part authenticity.

Selection Notes

Select this component when a bidirectional trigger device with a 95 V to 113 V breakover range is required. The 1 A RMS current rating suits moderate power applications. Verify that the 150 mA holding current meets the latch requirements of the downstream circuitry. Ensure the operating environment stays within the specified -40 C to +85 C thermal limits.

Part Context

This part belongs to the Kxxxzy series of high-voltage trigger diodes manufactured by Littelfuse under the Teccor brand. It serves as a specialized thyristor variant designed for robust voltage triggering in industrial and consumer electronics. The DO-214 packaging distinguishes it from through-hole alternatives like the K1050G.

Replacement Considerations

The K1050S1URP offers similar triggering functionality but differs in package type (DO-214AC) and maximum operating temperature (+125 C). Verify pin compatibility and thermal management requirements when substituting between these surface-mount variants.