MAC997B6

Triacs Overview

The MAC997B6 is a sensitive gate triac manufactured by onsemi, designed for light industrial and consumer applications. It features a blocking voltage of 600V and an RMS on-state current of 0.8A. The device operates in all four quadrants with a maximum DC gate trigger current of 5mA and a maximum DC gate trigger voltage of 2V. It has a minimum critical rate of rise of off-state voltage (dv/dt) of 20 V/µs at 110°C and a commutating di/dt of 1.6 A/µs at 110°C. The component is housed in a TO-92 package.

Triacs Feature Summary

• Sensitive gate triggering capability across all four quadrants for versatile logic interface compatibility
• High noise immunity with improved dv/dt characteristics to prevent false triggering
• Robust junction construction using diffused and glassivated processes for parameter uniformity

Triacs Applications

• Solid state relays
• MPU interface circuits
• TTL logic control systems

Triacs Procurement Notes

Verify the specific ordering suffix against official onsemi documentation to confirm package type and environmental compliance. Ensure the selected variant matches the required thermal and electrical specifications for the target application design.

Triacs Selection Notes

Select this component for low-power AC switching tasks requiring direct logic level drive. Confirm that the load current remains within the 0.8A RMS limit and that the circuit provides adequate snubbing to respect the dv/dt rating during switching transitions.

Triacs Part Context

This part belongs to the MAC997 series of silicon bidirectional thyristors. It shares the same package and basic structure as variants like MAC997A6 and MAC997A8, differing primarily in the rated repetitive peak off-state voltage.

Triacs Replacement Considerations

Direct substitutes include the MAC997A6 (400V rating) if voltage headroom allows, or the MAC997A8 (600V rating). Cross-brand equivalents such as NXP BT134W or STMicroelectronics T0805XH may be considered after verifying pinout and parameter alignment.

Triacs FAQ

What is the maximum DC gate trigger current for the MAC997B6?

The maximum DC gate trigger current is 5 mA.

Does the MAC997B6 support four-quadrant triggering?

Yes, it is designed for sensitive gate triggering in all four trigger modes.

What is the minimum dv/dt rating at 110°C?

The minimum critical rate of rise of off-state voltage is 20 V/µs at 110°C.