K1200GURP

Overview

The Littelfuse K1200GURP is a high-voltage trigger diode, also known as a SIDAC, designed for overvoltage protection in AC and DC circuits. It features a DO-15 plastic package with two terminals. The device has a maximum breakover voltage of 120V and a non-repetitive peak on-state current rating of 20A. It operates with a nominal holding current of 150mA. The component is lead-free and RoHS compliant, ensuring environmental safety standards are met for electronic assemblies.

Feature Summary

• Provides bidirectional triggering characteristics suitable for both AC and DC circuit applications
• Features an isolated case connection to facilitate safe mounting on heatsinks or chassis
• Offers robust surge handling capability through a high peak current rating

Applications

• Overvoltage protection for silicon unilateral voltage triggered switches (SIDACs)
• Triggering circuits for thyristors and triacs in power control systems
• Transient voltage suppression in industrial equipment and consumer appliances

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and compliance status. Ensure the procurement channel provides valid traceability documentation. Confirm that the received components match the specified DO-15 package dimensions and terminal configuration before integration into production lines.

Selection Notes

Select this component when a precise 120V breakover threshold is required for triggering sensitive semiconductor devices. Evaluate the 20A peak current capacity against expected transient energy levels in the target circuit. Consider the DO-15 package size for adequate thermal dissipation and mechanical stability in high-voltage environments compared to smaller surface-mount alternatives.

Part Context

This part belongs to the Littelfuse SIDAC family of voltage-triggered switches. These devices are engineered to protect low-power control circuits from high-voltage transients. The K1200 series specifically targets applications requiring reliable triggering at defined voltage levels without latching, distinguishing it from standard TVS diodes or gas discharge tubes.

Replacement Considerations

Cross-reference with other Littelfuse K-series SIDACs for different voltage thresholds. Verify compatibility with equivalent products from manufacturers such as STMicroelectronics or Nexperia if supply constraints exist. Ensure replacement parts maintain identical DO-15 packaging and electrical characteristics.