MAC997B8

Triacs Overview

The MAC997B8 is a silicon bidirectional thyristor (TRIAC) manufactured by onsemi, housed in a TO-92 package. It features a 600V repetitive peak off-state voltage and an RMS on-state current rating of 0.8A. The device operates as a four-quadrant logic level TRIAC with sensitive gate characteristics. Key electrical parameters include a maximum DC gate trigger current of 5 mA and a maximum DC gate trigger voltage of 2 V. The component exhibits a holding current of 10 mA and a maximum leakage current of 0.01 mA. It supports a critical rate of rise of off-state voltage of 20 V/us.

Triacs Feature Summary

• Sensitive gate design enabling direct interface with logic-level control circuits
• Four-quadrant operation ensuring reliable triggering across all gate polarities
• Robust thermal performance within standard industrial temperature ranges

Triacs Applications

• Lighting control systems for residential and commercial applications
• Solid-state relay modules requiring low-power switching
• Motor speed control circuits for small appliances

Triacs Procurement Notes

Verify the specific ordering suffix to confirm packaging and compliance details. Standard versions may differ from reel-packaged variants regarding lead times and minimum order quantities. Confirm RoHS status and marking codes against the manufacturer's latest datasheet before finalizing procurement specifications.

Triacs Selection Notes

Select this component when a compact TRIAC with 600V blocking capability and 0.8A load handling is required. Ensure the driving circuit can supply at least 5 mA gate current. Consider thermal derating if operating near the maximum junction temperature limit in enclosed spaces.

Triacs Part Context

This part belongs to the MAC997 series of sensitive gate TRIACs. Variants such as MAC997B8RL1 or MAC997B8G share identical electrical characteristics but differ in packaging format or environmental compliance markings. The base MAC997B8 designation refers to the standard through-hole TO-92 configuration.

Triacs Replacement Considerations

Direct substitutes include the MAC997B4 and MAC997B6, provided the lower voltage ratings are acceptable for the application. Cross-manufacturer equivalents from NXP or STMicroelectronics should be verified for pinout compatibility and gate trigger current limits.