MAC8SM

Triacs Overview

The MAC8SM is a sensitive gate triac from the MAC8S series, manufactured by onsemi. It features an 800 V peak repetitive off-state voltage (VDRM) and an RMS on-state current rating of 8.0 A at a case temperature of 70°C. The device supports a peak non-repetitive surge current of 70 A and operates within a junction temperature range of -40 to +110°C. Electrical characteristics include a maximum on-state voltage of 1.85 V, a holding current maximum of 10 mA, and gate trigger currents up to 5.0 mA across multiple quadrants. It utilizes a TO-220 package with a thermal resistance of 2.2 °C/W junction-to-case.

Triacs Feature Summary

• Sensitive gate design enables triggering by microcontrollers and logic circuits
• High immunity to commutating dv/dt and di/dt for robust operation
• Uniform gate trigger currents specified in Quadrants Q1, Q2, and Q3

Triacs Applications

• Appliance controls
• Heater controls
• Motor controls
• Full wave control of AC loads

Triacs Procurement Notes

Verify the specific ordering suffix 'G' indicates a lead-free and RoHS compliant package configuration. Confirm the manufacturer part number matches the required voltage rating variant within the MAC8S family. Ensure compatibility with the TO-220 mounting style and verify datasheet revisions for any updates to electrical parameters or thermal characteristics before finalizing procurement specifications.

Triacs Selection Notes

Select this component based on the 800 V blocking voltage requirement and 8 A RMS current capacity at 70°C case temperature. Evaluate the thermal resistance and derating curves for the specific application's heat dissipation needs. Consider the sensitive gate trigger requirements if interfacing directly with low-power logic circuits without additional driver stages.

Triacs Part Context

This device belongs to the MAC8S/D series of silicon bidirectional thyristors designed for industrial and consumer applications. The MAC8SM variant specifically denotes the 800 V blocking voltage option within the family, alongside lower voltage variants like the MAC8SD (400 V). All variants share identical packaging and general electrical characteristics except for the rated off-state voltage.

Triacs Replacement Considerations

Cross-reference with other manufacturers offering 8 A, 800 V sensitive gate triacs in TO-220 packages. Verify that substitute components meet the same peak repetitive off-state voltage, RMS current, and gate trigger current specifications to ensure circuit compatibility.