MKP3V240RLG

Overview

The MKP3V240RLG is a bidirectional high-voltage SIDAC trigger from onsemi, designed for direct AC power line interface. It switches from a blocking state to a low voltage on-state upon reaching the breakover voltage in either direction, maintaining conduction until current drops below the holding threshold. The device features an axial lead package (CASE 267) with glass passivation for reliability. Key electrical parameters include a repetitive peak off-state voltage of 180 V, a typical breakover voltage of 220 V, and an on-state RMS current of 1.0 A at 80°C case temperature. It supports a peak non-repetitive surge current of 20 A and operates within a junction temperature range of -40°C to +125°C.

Feature Summary

• Bidirectional switching capability for direct AC line interfacing
• Glass passivation ensures reliable operation under high stress
• Axial lead package provides high pulse current handling

Applications

• High pressure sodium vapor lighting circuits
• Strobes and flasher units
• Ignitor systems
• Gate triggering for SCRs and Triacs

Procurement Notes

Verify the ordering suffix RLG confirms tape and reel packaging containing 1500 units per reel. Confirm the component is Pb-Free and complies with RoHS directives. Ensure the specific revision D datasheet is referenced for accurate thermal and electrical validation during integration.

Selection Notes

Select this component when a bidirectional trigger is required for AC mains applications. The 180 V rating suits standard line voltages. Verify that the 1.0 A RMS current capacity meets the load requirements. Consider the CASE 267 package dimensions for PCB layout constraints and ensure adequate heat dissipation for the specified operating temperature range.

Part Context

This part belongs to the MKP3Vxx0 series of SIDACs, which includes the MKP3V120 variant offering a lower 90 V breakover voltage. Both devices share identical physical packaging and current ratings but differ in their voltage thresholds. The series is engineered for robust triggering in lighting and power control applications requiring simple, cost-effective bidirectional switching.

Replacement Considerations

The MKP3V120RLG serves as a functional substitute if the application requires a lower breakover voltage of approximately 120 V instead of 240 V. Other manufacturers may offer equivalent SIDACs, but pin compatibility and exact voltage tolerances must be verified against the original design specifications.