MKP3V120RLG

Overview

The MKP3V120RLG is a bidirectional high-voltage trigger device manufactured by onsemi. It operates as a SIDAC, switching from a blocking state to a low voltage on-state upon reaching the breakover voltage in either direction. The component features an axial lead package (CASE 267) and supports a peak repetitive off-state voltage of 120 V. Key electrical parameters include a typical breakover voltage of 110 V at a breakover current of 200 µA, a peak on-state voltage of 1.5 V at 1 A peak current, and a maximum RMS on-state current of 1.0 A. It exhibits a dynamic holding current of up to 100 mA and a critical rate-of-rise of on-state current (di/dt) of 120 A/µs.

Feature Summary

• Bidirectional triggering capability for direct AC power line interface
• Glass passivation ensures reliable operation under high stress
• Plastic axial lead package provides high pulse current capability

Applications

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

Procurement Notes

Verify the specific ordering suffix RLG against official documentation to confirm tape and reel packaging specifications. Confirm RoHS compliance status and material declarations directly with the manufacturer or authorized distributors prior to procurement. Ensure the selected variant matches the required voltage rating and package style for the intended assembly process.

Selection Notes

Select the MKP3V120RLG when a bidirectional trigger device with a 120 V breakover threshold is required. Compare against the MKP3V240 variant if a higher 240 V rating is necessary. Evaluate thermal derating curves to ensure the junction temperature remains within the -40°C to +125°C operating range during pulsed operation. Verify that the peak surge current requirements do not exceed the 20 A non-repetitive limit.

Part Context

This component belongs to the MKP3Vxx0 series of SIDAC devices designed for high-voltage applications. The 'RLG' suffix indicates a specific packaging configuration, typically tape and reel, distinct from the box-packaged 'G' suffix variants. These devices are part of onsemi's portfolio of protection and triggering components for industrial and consumer electronics.

Replacement Considerations

The MKP3V240 serves as a higher voltage alternative within the same family. Cross-reference datasheets for exact pinout compatibility and thermal characteristics before substitution. No other specific substitute part numbers are confirmed in the provided documentation.